subject:(varves)

University of Ottawa

1. Lagace, Amanda Lee. High-Resolution Record of Vegetation and Climate Change During the Holocene in Southwestern Québec .

Degree: 2019, University of Ottawa

URL: http://hdl.handle.net/10393/39613

► A varved sediment sequence spanning the past ~11.0 ka was collected from Lac Noir (45.77N, 75.13W, 168 m a.s.l.) in southwestern Québec. A high-resolution pollen… (more)

Subjects/Keywords: Paleoecology; Holocene; Pollen; Vegetation; Varves; southwestern Québec

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APA (6^th Edition):

Lagace, A. L. (2019). High-Resolution Record of Vegetation and Climate Change During the Holocene in Southwestern Québec . (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/39613

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lagace, Amanda Lee. “High-Resolution Record of Vegetation and Climate Change During the Holocene in Southwestern Québec .” 2019. Thesis, University of Ottawa. Accessed March 05, 2021. http://hdl.handle.net/10393/39613.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lagace, Amanda Lee. “High-Resolution Record of Vegetation and Climate Change During the Holocene in Southwestern Québec .” 2019. Web. 05 Mar 2021.

Vancouver:

Lagace AL. High-Resolution Record of Vegetation and Climate Change During the Holocene in Southwestern Québec . [Internet] [Thesis]. University of Ottawa; 2019. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10393/39613.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lagace AL. High-Resolution Record of Vegetation and Climate Change During the Holocene in Southwestern Québec . [Thesis]. University of Ottawa; 2019. Available from: http://hdl.handle.net/10393/39613

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Uppsala University

2. Svensson, Matilda Elise Ruth. Sedimentology and Catchment Processes of Lake Bolterskaret, Svalbard.

Degree: LUVAL, 2018, Uppsala University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-354616

► Lacustrine sediments are important archives of landscape and climate evolution. Varved sediments offer a high-resolution archive enabling studies on annual and seasonal scale. Understanding… (more)

▼ Lacustrine sediments are important archives of landscape and climate evolution. Varved sediments offer a high-resolution archive enabling studies on annual and seasonal scale. Understanding the alteration of sedimentation in glacial lakes under a changing climate is important for paleoclimate reconstructions. This study aims at understanding the modern processes that governs sedimentation in a small high Arctic lake as well as studying the alteration of these processes over the last 60 years. This is carried out through geomorphological mapping and analysis of lacustrine sediment cores. This analysis consists of ^239+240Pu dating, elemental composition by an ITRAX core scanner, and detailed lithostratigraphic logging on thin sections. This has resulted in a geomorphological map over the catchment and a compiled stratigraphic log of the sediment core. The result of the study shows that Lake Bolterskaret has evolved from a glacial to a non-glacial lake during the latter part of the 20^th century. This evolution is detected in the sediment record as a shift in deposition from classic varves to paraglacial varves. This shift is attributed to the retreat of the Ayerbreen glacier resulting in a shift in sediment source from glacial to paraglacial sediments, originating from reworking of the terminal moraine. Two hillsides also act as sources of sediment as mass movement processes transport debris towards the lake. These processes are suggested to affect the variation in thickness and complexity of the varves. The main forcing of this shift is due to the current warming of the Arctic, causing glaciers to retreat. This study contributes to the greater knowledge about imprints of landscape evolution in lacustrine sediment records by highlighting the rapid catchment evolution in Arctic regions and by linking a shift towards paraglacial sedimentation with glacial retreat. The results from this study emphasize that processes governing sedimentation today cannot be assumed to reflect processes which occurred half a century ago.

Subjects/Keywords: Lacustrine sedimentation; Bolterskaret; late Holocene; Climate change; Varves; Physical Geography; Naturgeografi

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APA (6^th Edition):

Svensson, M. E. R. (2018). Sedimentology and Catchment Processes of Lake Bolterskaret, Svalbard. (Thesis). Uppsala University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-354616

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Svensson, Matilda Elise Ruth. “Sedimentology and Catchment Processes of Lake Bolterskaret, Svalbard.” 2018. Thesis, Uppsala University. Accessed March 05, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-354616.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Svensson, Matilda Elise Ruth. “Sedimentology and Catchment Processes of Lake Bolterskaret, Svalbard.” 2018. Web. 05 Mar 2021.

Vancouver:

Svensson MER. Sedimentology and Catchment Processes of Lake Bolterskaret, Svalbard. [Internet] [Thesis]. Uppsala University; 2018. [cited 2021 Mar 05]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-354616.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Svensson MER. Sedimentology and Catchment Processes of Lake Bolterskaret, Svalbard. [Thesis]. Uppsala University; 2018. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-354616

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Queens University

3. Cockburn, Jaclyn. Sedimentary Processes and Environmental Signals from Paired High Arctic Lakes .

Degree: Geography, 2008, Queens University

URL: http://hdl.handle.net/1974/1399

► Suspended sediment delivery dynamics in two watersheds at Cape Bounty, Melville Island, Nunavut, Canada were studied to characterize the hydroclimate conditions in which laminated sediments… (more)

▼ Suspended sediment delivery dynamics in two watersheds at Cape Bounty, Melville Island, Nunavut, Canada were studied to characterize the hydroclimate conditions in which laminated sediments formed. Process work over three years determined snow-water equivalence was the primary factor that controlled sediment yield in both catchments. Cool springs (2003, 2004) enhanced runoff potential and intensity because channelized meltwater was delayed as it tunneled through the snowpack and reached the river channel (sediment supply) within 1-2 days. In warm springs (2005), meltwater channelized on the snowpack and did not immediately reach the river bed (7-10 days). Sediment transport was reduced because flow competence was lower and sediment supplies limited. Sediment deposition in the West Lake depended on surface runoff intensity. Short-lived, intense episodes of turbid inflow generated underflow activity which delivered the majority of seasonal sediment. In 2005, runoff was less intense and few underflows were detected compared to the cooler, underflow dominated 2004 runoff season. As well, grain-size analysis of trapped sediment indicated that deposition rates and maximum grain-size were decoupled, indicative of varied sediment supplies and delivery within the fluvial system. These decoupled conditions have important implications for paleohydrological interpretations from downstream sedimentary records. Two similar 600-year varve records were constructed from the lakes at Cape Bounty. Although these series were highly correlated throughout, time-dependent correlation analysis identified divergence in the early 19th century. Because the varve records were from adjacent watersheds and subject to the same hydroclimatic conditions, the divergence suggests watershed-level changes, such as increased local active layer detachments. The varve record from West Lake was highly correlated with lagged autumn snowfall and spring temperature. Similar relationships between these variables and East Lake were not as strong or significant. Long-term climatic interpretations should be carefully assessed. A single record from either of these lakes might lead to autumn snowfall and/or spring-melt intensity reconstructions, given the process work and weather record correlations. The recent divergence reveals potential changes likely to occur as warming increases variability within the Arctic System. Multidisciplinary monitoring and observations should continue in order to quantify future variability and evaluate the impact on these systems.

Subjects/Keywords: Climate Change ; Varves ; Hydrology

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APA (6^th Edition):

Cockburn, J. (2008). Sedimentary Processes and Environmental Signals from Paired High Arctic Lakes . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/1399

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Cockburn, Jaclyn. “Sedimentary Processes and Environmental Signals from Paired High Arctic Lakes .” 2008. Thesis, Queens University. Accessed March 05, 2021. http://hdl.handle.net/1974/1399.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Cockburn, Jaclyn. “Sedimentary Processes and Environmental Signals from Paired High Arctic Lakes .” 2008. Web. 05 Mar 2021.

Vancouver:

Cockburn J. Sedimentary Processes and Environmental Signals from Paired High Arctic Lakes . [Internet] [Thesis]. Queens University; 2008. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1974/1399.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Cockburn J. Sedimentary Processes and Environmental Signals from Paired High Arctic Lakes . [Thesis]. Queens University; 2008. Available from: http://hdl.handle.net/1974/1399

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Royal Holloway, University of London

4. Bendle, Jacob. The timing, dynamics and palaeoclimatic significance of ice sheet deglaciation in central Patagonia, southern South America.

Degree: PhD, 2018, Royal Holloway, University of London

URL: https://pure.royalholloway.ac.uk/portal/en/publications/the-timing-dynamics-and-palaeoclimatic-significance-of-ice-sheet-deglaciation-in-central-patagonia-southern-south-america(d804facc-b320-49b2-bf8b-268dd4ef7296).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.792792

► Robust reconstructions of glacial retreat are required to elucidate controls on ice-sheet deglaciation and (a)synchronicity in the climate system. Such reconstructions can be derived through… (more)

▼ Robust reconstructions of glacial retreat are required to elucidate controls on ice-sheet deglaciation and (a)synchronicity in the climate system. Such reconstructions can be derived through detailed geological investigations of glacial landforms and sediments. Patagonia, in southern South America, contains a well-preserved glacial record and occupies an important location regarding major Southern Hemisphere climate systems. However, resolving the history of ice-sheet deglaciation has proven problematic, owing to generally low-resolution geomorphological mapping, and a paucity of high-precision dating control. This thesis explores the deglacial history of the Lago General Carrera-Buenos Aires (LGC-BA) and Lago Cochrane-Pueyrredón (LC-P) ice lobes (46-48°S) of the former Patagonian Ice Sheet (PIS). The region is chosen because there are uncertainties associated with: (i) the deglacial configuration and evolution of retreating ice lobes and proglacial lake systems; and (ii) the sub-millennial timing of deglacial events. A new glacial geomorphological map is produced to reconstruct the spatio-temporal evolution of ice lobes and proglacial lakes. The elevation(s) of relict lake shorelines are examined to quantify glacio-isostatic adjustment and accurately assign former lake levels, lake outflows, and ice-margin positions, through the last deglaciation. These new reconstructions are used to target sites for high-resolution dating. A ~1000-year varve chronology is developed at LGC-BA after examining the sedimentary properties of laminated glaciolacustrine sequences. Tephrochronology anchors this record to the calendar-year timescale. The chronology indicates that PIS retreat commenced at 18,086 ± 214 cal a BP, and accelerated from 5 to 18 m yr-1 over the next ~1000 years. The new timing for deglaciation at LGC-BA allows an exploration of climate forcing mechanisms. Comparisons with palaeoclimatic records reveal a hemisphere-wide warming influence on LGC-BA deglaciation. Moreover, spectral analyses of varve thickness time-series demonstrate a likely teleconnection with tropical Pacific climate oscillations, and PIS sensitivity to short-term variations in melt-season temperature.

Subjects/Keywords: Patagonia; Ice sheet deglaciation; Palaeoclimate; Glacial lakes; Glacial varves; Tephrochronology; Bayesian age-modelling

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APA (6^th Edition):

Bendle, J. (2018). The timing, dynamics and palaeoclimatic significance of ice sheet deglaciation in central Patagonia, southern South America. (Doctoral Dissertation). Royal Holloway, University of London. Retrieved from https://pure.royalholloway.ac.uk/portal/en/publications/the-timing-dynamics-and-palaeoclimatic-significance-of-ice-sheet-deglaciation-in-central-patagonia-southern-south-america(d804facc-b320-49b2-bf8b-268dd4ef7296).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.792792

Chicago Manual of Style (16^th Edition):

Bendle, Jacob. “The timing, dynamics and palaeoclimatic significance of ice sheet deglaciation in central Patagonia, southern South America.” 2018. Doctoral Dissertation, Royal Holloway, University of London. Accessed March 05, 2021. https://pure.royalholloway.ac.uk/portal/en/publications/the-timing-dynamics-and-palaeoclimatic-significance-of-ice-sheet-deglaciation-in-central-patagonia-southern-south-america(d804facc-b320-49b2-bf8b-268dd4ef7296).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.792792.

MLA Handbook (7^th Edition):

Bendle, Jacob. “The timing, dynamics and palaeoclimatic significance of ice sheet deglaciation in central Patagonia, southern South America.” 2018. Web. 05 Mar 2021.

Vancouver:

Bendle J. The timing, dynamics and palaeoclimatic significance of ice sheet deglaciation in central Patagonia, southern South America. [Internet] [Doctoral dissertation]. Royal Holloway, University of London; 2018. [cited 2021 Mar 05]. Available from: https://pure.royalholloway.ac.uk/portal/en/publications/the-timing-dynamics-and-palaeoclimatic-significance-of-ice-sheet-deglaciation-in-central-patagonia-southern-south-america(d804facc-b320-49b2-bf8b-268dd4ef7296).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.792792.

Council of Science Editors:

Bendle J. The timing, dynamics and palaeoclimatic significance of ice sheet deglaciation in central Patagonia, southern South America. [Doctoral Dissertation]. Royal Holloway, University of London; 2018. Available from: https://pure.royalholloway.ac.uk/portal/en/publications/the-timing-dynamics-and-palaeoclimatic-significance-of-ice-sheet-deglaciation-in-central-patagonia-southern-south-america(d804facc-b320-49b2-bf8b-268dd4ef7296).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.792792

5. Roop, Heidi Anne. Late-Holocene Climate Variability in Southern New Zealand: A reconstruction of regional climate from an annually laminated sediment sequence from Lake Ohau.

Degree: 2015, Victoria University of Wellington

URL: http://hdl.handle.net/10063/4796

► This research aims to improve understanding of synoptic climate systems influencing southern New Zealand and document changes in the intensity and frequency of these systems… (more)

▼ This research aims to improve understanding of synoptic climate systems influencing southern New Zealand and document changes in the intensity and frequency of these systems beyond the historical record by analyzing a 1,350-year annually laminated sediment sequence recovered from Lake Ohau, South Island, New Zealand (44.234°S, 169.854°E). Climatological patterns originating in both the tropics (El-Niño-Southern Oscillation (ENSO), Interdecadal Pacific Oscillation (IPO)) and in the Antarctic (Southern Annular Mode (SAM)) influence year-to-year variability in New Zealand’s climate (e.g. temperature and precipitation). However, the range of natural variability of these systems in the southwest Pacific over time is poorly known because the instrumental record is short (~100 years). The high-resolution record from Lake Ohau offers a unique opportunity to investigate changes in regional hydrology and climate, and to also explore connections to large-scale climate patterns over the last millennium. Hydrodynamic and hydroclimatic processes that influence and control the production, transport, and deposition of sediment within the Lake Ohau catchment are examined and constrained in order to develop a robust climate record. A key aim is to determine the role that meteorology and climate play in controlling sediment flux. The physical properties and facies of a 5.5-meter-long Lake Ohau sediment core are analyzed using thin-sections, high-resolution X-radiographs scans, and particle-size analyses. Time-series analysis is used to establish links between varve facies, hydroclimate variability and regional synoptic climate types over the instrumental record. Utilizing this climate-proxy relationship, inflow conditions are reconstructed over the last 1,350 years and compared with regional temperature reconstructions to generate a Western South Island paleo-atmospheric circulation index. Relationship between this paleocirculation index and other proxy reconstructions show significant variability in the relative forcing of tropical (ENSO) and Southern Hemisphere highlatitude (SAM) synoptic climate drivers on New Zealand and southwest Pacific climate. Overall, this work demonstrates that: a) the laminated sediments from Lake Ohau are varves and the formation of the annual stratigraphy is strongly controlled by lake hydrodynamics, in particular, thermal lake stratification; b) sediment stratigraphy reflects changes in austral warm period (December-May) inflow, enabling a highresolution reconstruction of hydroclimate over the last 1,350 years and; c) the generation of a paleocirculation index for the Western South Island points to significant changes between northerly or southerly dominated atmospheric conditions in southern New Zealand, particularly over the ‘Little Ice Age’ (1385-1710 AD). During this time, the strength of tropical teleconnections weakened and a strong negative phase SAM persisted. Comparison with high-resolution regional proxy records from Antarctica and the Central Pacific point to significant regional coherence… Advisors/Committee Members: Dunbar, Gavin, Levy, Richard, Vandergoes, Marcus.

Subjects/Keywords: Varves; Climate change; Lake Ohau

…and air temperature, in the Lake Ohau catchment. 1.3 VARVES AS CLIMATE PROXIES 1.3.1 Varve… …Varves can provide high-resolution, annually resolved paleoclimate archives that extend beyond… …x29;. Varves are rhythmically deposited couplets that 9 reflect climatic… …varved sediments preserved in the distal basin of Lake Ohau. Complex varves are couplets… …Varves can be clastic, biogenic or evaporitic in nature and are used to reconstruct changes in…

11 more images…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Roop, H. A. (2015). Late-Holocene Climate Variability in Southern New Zealand: A reconstruction of regional climate from an annually laminated sediment sequence from Lake Ohau. (Doctoral Dissertation). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/4796

Chicago Manual of Style (16^th Edition):

Roop, Heidi Anne. “Late-Holocene Climate Variability in Southern New Zealand: A reconstruction of regional climate from an annually laminated sediment sequence from Lake Ohau.” 2015. Doctoral Dissertation, Victoria University of Wellington. Accessed March 05, 2021. http://hdl.handle.net/10063/4796.

MLA Handbook (7^th Edition):

Roop, Heidi Anne. “Late-Holocene Climate Variability in Southern New Zealand: A reconstruction of regional climate from an annually laminated sediment sequence from Lake Ohau.” 2015. Web. 05 Mar 2021.

Vancouver:

Roop HA. Late-Holocene Climate Variability in Southern New Zealand: A reconstruction of regional climate from an annually laminated sediment sequence from Lake Ohau. [Internet] [Doctoral dissertation]. Victoria University of Wellington; 2015. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10063/4796.

Council of Science Editors:

Roop HA. Late-Holocene Climate Variability in Southern New Zealand: A reconstruction of regional climate from an annually laminated sediment sequence from Lake Ohau. [Doctoral Dissertation]. Victoria University of Wellington; 2015. Available from: http://hdl.handle.net/10063/4796

University of Lund

6. Striberger, Johan. Holocene development of Lake Lögurinn and Eyjabakkajökull : a multi-proxy approach.

Degree: 2011, University of Lund

URL: https://lup.lub.lu.se/record/2154273 ; https://portal.research.lu.se/ws/files/3857047/3241813.pdf

► The North Atlantic region has experienced significant climate fluctuations during the Holocene. It has been shown that these fluctuations affected the terrestrial environment in Iceland,… (more)

▼ The North Atlantic region has experienced significant climate fluctuations during the Holocene. It has been shown that these fluctuations affected the terrestrial environment in Iceland, including its glaciers and ice caps. However, the full Holocene development of Icelandic glaciers, including the large Vatnajökull ice cap and its outlet glaciers, is not fully known. In this thesis, a sediment sequence covering the past 10 500 years from Lake Lögurinn in eastern Iceland has been analysed. This glacier-fed lake currently receives meltwater and sediments from Eyjabakkajökull, which is a surging outlet glacier that drains the northeastern part of Vatnajökull. Using a multi-proxy approach, proxies for glacial meltwater variability and surge periodicities of Eyjabakkajökull have been examined to infer its Holocene development. In addition, changes in sediment transport from a non-glaciated catchment adjacent to Lake Lögurinn have been analysed to reconstruct winter precipitation in the Lake Lögurinn region during the past ca. 750 years. The sediments and proxy records show a dynamic development of Eyjabakkajökull during the current interglacial. After the final phase of the last deglaciation in eastern Iceland, glacially derived sediments more or less ceased to be deposit in Lake Lögurinn between ca. 9000 and 4400 years BP (BP = calendar years before 1950 AD), which suggests that Eyjabakkajökull was much reduced in size or possibly non-existing in early and mid-Holocene. During this time, the biologic productivity in Lake Lögurinn increased. This increase is inferred to reflect a switch from glacio-lacustrine to lacustrine conditions in the lake, which likely was caused by higher temperatures both in the lake and in the ambient atmosphere. The Holocene Thermal Maximum is inferred by a period of maximum Holocene aquatic productivity, and dated to ca. 7900-7000 years BP. By 4400 years BP, glacial meltwater and sediments were again transported to Lake Lögurinn, thus marking the return of the Eyjabakkajökull glacier and the onset of Neoglaciation in eastern Iceland. The Neoglacial expansion of Eyjabakkajökull caused the glacier to begin to surge ca. 2200 years BP. During the last 1700 years, the glacier has surged at a fairly constant periodicity except for the later part of the Little Ice Age (ca. 1600-1900 AD), when the surge periodicity almost halved. This increased surge activity was likely caused by increased mass accumulation of Eyjabakkajökull, which eventually caused the glacier to reach its maximum Holocene extent since the last deglaciation. This expansion and increased surge activity may to a large extent be related to increased winter precipitation, in combination with lower annual temperatures.

Subjects/Keywords: Geology; Iceland; the Holocene; lake sediments; varves; glacial meltwater variability; surge periodicity; palaeoclimate

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Striberger, J. (2011). Holocene development of Lake Lögurinn and Eyjabakkajökull : a multi-proxy approach. (Doctoral Dissertation). University of Lund. Retrieved from https://lup.lub.lu.se/record/2154273 ; https://portal.research.lu.se/ws/files/3857047/3241813.pdf

Chicago Manual of Style (16^th Edition):

Striberger, Johan. “Holocene development of Lake Lögurinn and Eyjabakkajökull : a multi-proxy approach.” 2011. Doctoral Dissertation, University of Lund. Accessed March 05, 2021. https://lup.lub.lu.se/record/2154273 ; https://portal.research.lu.se/ws/files/3857047/3241813.pdf.

MLA Handbook (7^th Edition):

Striberger, Johan. “Holocene development of Lake Lögurinn and Eyjabakkajökull : a multi-proxy approach.” 2011. Web. 05 Mar 2021.

Vancouver:

Striberger J. Holocene development of Lake Lögurinn and Eyjabakkajökull : a multi-proxy approach. [Internet] [Doctoral dissertation]. University of Lund; 2011. [cited 2021 Mar 05]. Available from: https://lup.lub.lu.se/record/2154273 ; https://portal.research.lu.se/ws/files/3857047/3241813.pdf.

Council of Science Editors:

Striberger J. Holocene development of Lake Lögurinn and Eyjabakkajökull : a multi-proxy approach. [Doctoral Dissertation]. University of Lund; 2011. Available from: https://lup.lub.lu.se/record/2154273 ; https://portal.research.lu.se/ws/files/3857047/3241813.pdf

Université du Québec à Montréal

7. Godbout, Pierre-Marc. Évolution du lac glaciaire Ojibway au cours des phases tardives de la déglaciation à partir des enregistrements géomorphologiques et sédimentaires de l'Abitibi et de la Jamésie (Québec et Ontario).

Degree: 2019, Université du Québec à Montréal

URL: http://archipel.uqam.ca/13390/1/D3633.pdf

► La fonte de l'inlandsis lauren ti dien lors de la dernière glaciation a entraîné la formation de grands bassins glaciolacustres qui ont considérablement varié en… (more)

▼ La fonte de l'inlandsis lauren ti dien lors de la dernière glaciation a entraîné la formation de grands bassins glaciolacustres qui ont considérablement varié en superficie et en volume. Le Lac Ojibway a recouvert une portion importante du nordest de l'Ontario et du nord-ouest du Québec et s'est joint durant les stades tardifs de la déglaciation au Lac Agassiz qui a occupé de vastes tenitoires plus à l'ouest. Le drainage abrupt de ce grand lac de banage glaciaire dans l'Atlantique Nord est considéré comme le principal mécanisme responsable du déclenchement d'un refroidissement majeur de courte durée vers 8,2 cal ka BP, via l'injection massive d'eau de fonte qui aurait vraisemblablement affecté la circulation thermohaline. Cependant, l'évaluation de l'impact des décharges massives d'eau de fonte sur le système climatique requiert des contraintes fiables sur les changements de configuration de ces lacs, sur la chronologie de leurs principales phases, ainsi que sur les mécanismes glacio-dynamiques ayant mené à leurs drainages. Or, les séquences de rivages glaciolacustres enregistrant les variations de 1 'étendue et de la profondeur du Lac Ojibway au cours des derniers stades de la déglaciation demeurent peu documentées. Beaucoup d'incertitudes persistent quant au nombre de différents niveaux du lac dont la chronologie demeure largement non contrainte, de même que sur le rôle joué par la dynamique glaciaire sur 1' évolution du lac et sur les étapes ayant mené à son drainage final. L'objectif principal de cette thèse est de raffiner la configuration et la chronologie de la séquence d'événements ayant influencé l'évolution du Lac Ojibway au cours des stades tardifs de la déglaciation à partir de l'étude détaillée des enregistrements géomorphologiques et sédimentaires dans le bassin Ojibway. Cet objectif est abordé à l'intérieur de trois chapitres qui forment le coeur de la thèse. Le premier chapitre décrit l'utilisation de la datation par isotopes cosmogéniques (10Be) sur des surfaces rocheuses délavées qui forment des rivages érosifs surélevés marquant la limite maximale atteinte par le Lac Ojibway. Cette approche novatrice vise à évaluer l'applicabilité de cette méthode pour dater d'anciens rivages glaciolacustres afin d'obtenir la première chronologie directe sur une phase majeure du lac. Les nouvelles données géochronologiques présentées dans cette étude permettent de contraindre le début de l'épisode glaciolacustre Ojibway à un stade précoce de la déglaciation régionale. De plus, ces résultats constituent une étape importante vers l'amélioration des reconstructions paléogéographiques décrivant l'évolution des lacs glaciaires, lesquelles seront éventuellement utilisées pour calculer les volumes d'eau de fonte contenus dans ces bassins durant des intervalles spécifiques de la dernière déglaciation. Le second chapitre présente l'étude détaillée de deux séries de varves du Lac Ojibway prélevées dans le nord-ouest du Québec qui documentent la dynamique glaciaire et les événements de drainage dans le bassin lors…

Subjects/Keywords: Calotte glaciaire laurentienne; Lac de l'Ojibway; Lac Agassiz; Géomorphologie glaciaire; Niveau des eaux; Rives; Varves; Déglaciation

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APA (6^th Edition):

Godbout, P. (2019). Évolution du lac glaciaire Ojibway au cours des phases tardives de la déglaciation à partir des enregistrements géomorphologiques et sédimentaires de l'Abitibi et de la Jamésie (Québec et Ontario). (Thesis). Université du Québec à Montréal. Retrieved from http://archipel.uqam.ca/13390/1/D3633.pdf

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Godbout, Pierre-Marc. “Évolution du lac glaciaire Ojibway au cours des phases tardives de la déglaciation à partir des enregistrements géomorphologiques et sédimentaires de l'Abitibi et de la Jamésie (Québec et Ontario).” 2019. Thesis, Université du Québec à Montréal. Accessed March 05, 2021. http://archipel.uqam.ca/13390/1/D3633.pdf.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Godbout, Pierre-Marc. “Évolution du lac glaciaire Ojibway au cours des phases tardives de la déglaciation à partir des enregistrements géomorphologiques et sédimentaires de l'Abitibi et de la Jamésie (Québec et Ontario).” 2019. Web. 05 Mar 2021.

Vancouver:

Godbout P. Évolution du lac glaciaire Ojibway au cours des phases tardives de la déglaciation à partir des enregistrements géomorphologiques et sédimentaires de l'Abitibi et de la Jamésie (Québec et Ontario). [Internet] [Thesis]. Université du Québec à Montréal; 2019. [cited 2021 Mar 05]. Available from: http://archipel.uqam.ca/13390/1/D3633.pdf.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Godbout P. Évolution du lac glaciaire Ojibway au cours des phases tardives de la déglaciation à partir des enregistrements géomorphologiques et sédimentaires de l'Abitibi et de la Jamésie (Québec et Ontario). [Thesis]. Université du Québec à Montréal; 2019. Available from: http://archipel.uqam.ca/13390/1/D3633.pdf

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Queens University

8. Tomkins, Jessica Diane. Sedimentology and paleoenvironmental indicators in a High Arctic meromictic lake .

Degree: Geography, 2008, Queens University

URL: http://hdl.handle.net/1974/1200

► High Arctic meromictic lakes are frequently used to generate detailed records of past environmental variability within their sedimentary profiles. However, without detailed analyses of sedimentation… (more)

▼ High Arctic meromictic lakes are frequently used to generate detailed records of past environmental variability within their sedimentary profiles. However, without detailed analyses of sedimentation influences over time, their paleoclimate records cannot be accurately interpreted. This thesis presents a comprehensive examination of the sedimentology and paleoenvironmental records of meromictic Lake A, Ellesmere Island (83°00’N, 75°30’W), including detailed analysis of the sedimentary history, development and evaluation of several paleoclimate records. The sedimentary record was primarily composed of clastic material but varying inputs of authigenic components from biological and chemical processes in the water column resulted in a complex history of lake sedimentation. Under chemically stratified conditions during the past millennium, annual laminae (varves) formed and were used to develop a sedimentary chronology. Sedimentary pellets were most likely formed by ice-rafting processes and were deposited during high melt years in this perennially ice-covered lake. The pellet frequency record indicated that the twentieth century contained the most frequent reduced ice cover summers during the past millennium, although the 1500s and 1600s were also inferred warm periods. Comparison with instrumental climate data indicated that varve thickness was primarily related to late summer and autumn snowfall in the previous year, which highlighted the importance of snow availability in spring rather than melt energy in sediment transfer to the lake in this non-glacial catchment. The varve thickness and grain size records suggested increased flow competency and autumn snowfall particularly during the late-1000s to early-1100s and first half of the 1900s. Paleoenvironmental records from Lake A corresponded well with many regional proxy records and provided a long-term framework within which to examine observed environmental change along the northern Ellesmere Island coast during the past century. Finally, these analyses would not have been possible without obtaining high quality sediment cores. This research also investigated the effectiveness of a gel seal method for preserving the fragile sediment-water interface during transport and its results could be useful for other sediment core studies.

Subjects/Keywords: Paleoclimatology ; Sedimentology ; Varves ; High Arctic ; Meromictic lake

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APA (6^th Edition):

Tomkins, J. D. (2008). Sedimentology and paleoenvironmental indicators in a High Arctic meromictic lake . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/1200

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Tomkins, Jessica Diane. “Sedimentology and paleoenvironmental indicators in a High Arctic meromictic lake .” 2008. Thesis, Queens University. Accessed March 05, 2021. http://hdl.handle.net/1974/1200.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Tomkins, Jessica Diane. “Sedimentology and paleoenvironmental indicators in a High Arctic meromictic lake .” 2008. Web. 05 Mar 2021.

Vancouver:

Tomkins JD. Sedimentology and paleoenvironmental indicators in a High Arctic meromictic lake . [Internet] [Thesis]. Queens University; 2008. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1974/1200.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tomkins JD. Sedimentology and paleoenvironmental indicators in a High Arctic meromictic lake . [Thesis]. Queens University; 2008. Available from: http://hdl.handle.net/1974/1200

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Queens University

9. Kaufman, Claire Allyn. Recent hydroclimate dynamics in southwest Alaska: understanding multidecadal climate variability through sedimentary process studies and varve sedimentology.

Degree: Geography, 2008, Queens University

URL: http://hdl.handle.net/1974/1471

► Sedimentological analyses of sediment traps and 289 years (1717-2006) of varved sediments from Shadow Bay (60.01°N, 159.18°W), Lake Chauekuktuli were compared to available hydrometeorological data… (more)

▼ Sedimentological analyses of sediment traps and 289 years (1717-2006) of varved sediments from Shadow Bay (60.01°N, 159.18°W), Lake Chauekuktuli were compared to available hydrometeorological data in order to investigate basin response to hydroclimatic variability in southwest Alaska. On a subannual timescale, the characteristics of the coarse basal unit typical of clastic varves were controlled by spring snowmelt and runoff, while the fine-grained cap was shaped by fall and winter conditions. Coarse subannual laminations within the clay cap were associated with autumn storm activity and winter warming events brought about by the interplay between regional maritime and continental air masses. Biogenic silica (BSi) profiles show two annual peaks in siliceous algal deposition; the first occurred at the end of the spring freshet, the second in the late summer. On an annual timescale, varve thickness was dependent on total annual discharge (r2=0.75, n=43, p<0.0001), while maximum annual grain size was determined to be dependent on both maximum spring discharge (r2=0.63, n=43, p<0.0001) and total annual discharge (r2=0.61, n=43, p<0.0001). On interannual timescales, relationships between climate variables (temperature, precipitation, North Pacific (NP) and Pacific Decadal Oscillation (PDO) indices) and both regional discharge and varve thickness were insignificant. When the same data sets were analyzed on multidecadal timescales, regime shifts in varve thickness and total annual discharge coherent with shifts in NP and PDO indices were identified. Periods of increased varve thickness and total annual discharge were associated with warm PDO phases and a strengthened Aleutian Low. The 289-year varve record was used to reconstruct PDO dynamics prior to 1900. Multidecadal shifts were apparent throughout the 19th century, but were absent in the 18th century. This study provides insight into the linkages between regional climate, physical and biological deposition, and can be used to improve the interpretation of seasonal and annual-scale paleoclimate reconstructions for basins similar to Shadow Bay. This study also sheds light on the nature of multidecadal climate variability in the Pacific Northwest region prior to the instrumental record.

Subjects/Keywords: Earth Systems Science ; Paleoclimatology ; Sedimentology ; Limnology ; Alaska ; Varves

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APA (6^th Edition):

Kaufman, C. A. (2008). Recent hydroclimate dynamics in southwest Alaska: understanding multidecadal climate variability through sedimentary process studies and varve sedimentology. (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/1471

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kaufman, Claire Allyn. “Recent hydroclimate dynamics in southwest Alaska: understanding multidecadal climate variability through sedimentary process studies and varve sedimentology. ” 2008. Thesis, Queens University. Accessed March 05, 2021. http://hdl.handle.net/1974/1471.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kaufman, Claire Allyn. “Recent hydroclimate dynamics in southwest Alaska: understanding multidecadal climate variability through sedimentary process studies and varve sedimentology. ” 2008. Web. 05 Mar 2021.

Vancouver:

Kaufman CA. Recent hydroclimate dynamics in southwest Alaska: understanding multidecadal climate variability through sedimentary process studies and varve sedimentology. [Internet] [Thesis]. Queens University; 2008. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1974/1471.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kaufman CA. Recent hydroclimate dynamics in southwest Alaska: understanding multidecadal climate variability through sedimentary process studies and varve sedimentology. [Thesis]. Queens University; 2008. Available from: http://hdl.handle.net/1974/1471

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

10. Zalzal, Kathryn S. Environmental Reconstructions from Laminated Lake Sediments, Lake C3, Ellesmere Island, Canadian High Arctic.

Degree: MS, Geosciences, 2009, University of Massachusetts

URL: https://scholarworks.umass.edu/theses/354

► Sediments in Lake C3, Ellesmere Island, Canada, contain annual laminations, providing a record of sediment accumulation for 1900+ years. Marine sediments are also present at… (more)

Subjects/Keywords: varves; climate change; geochemistry; tephrochronology; lake sediments; XRF; Geology

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APA (6^th Edition):

Zalzal, K. S. (2009). Environmental Reconstructions from Laminated Lake Sediments, Lake C3, Ellesmere Island, Canadian High Arctic. (Masters Thesis). University of Massachusetts. Retrieved from https://scholarworks.umass.edu/theses/354

Chicago Manual of Style (16^th Edition):

Zalzal, Kathryn S. “Environmental Reconstructions from Laminated Lake Sediments, Lake C3, Ellesmere Island, Canadian High Arctic.” 2009. Masters Thesis, University of Massachusetts. Accessed March 05, 2021. https://scholarworks.umass.edu/theses/354.

MLA Handbook (7^th Edition):

Zalzal, Kathryn S. “Environmental Reconstructions from Laminated Lake Sediments, Lake C3, Ellesmere Island, Canadian High Arctic.” 2009. Web. 05 Mar 2021.

Vancouver:

Zalzal KS. Environmental Reconstructions from Laminated Lake Sediments, Lake C3, Ellesmere Island, Canadian High Arctic. [Internet] [Masters thesis]. University of Massachusetts; 2009. [cited 2021 Mar 05]. Available from: https://scholarworks.umass.edu/theses/354.

Council of Science Editors:

Zalzal KS. Environmental Reconstructions from Laminated Lake Sediments, Lake C3, Ellesmere Island, Canadian High Arctic. [Masters Thesis]. University of Massachusetts; 2009. Available from: https://scholarworks.umass.edu/theses/354

11. Howe, Timothy S. Investigating potential climatic cycles in glacially-influenced rhythmites of the upper Gowganda Formation using geochemical, sedimentological and spectral analyses.

Degree: 2015, University of Western Ontario

URL: https://ir.lib.uwo.ca/etd/3264

► The upper Gowganda Formation of the Huronian Supergroup contains glacially-induced, varve-like rhythmites composed of turbiditic micro-laminae that potentially preserve a detailed record of climatic conditions… (more)

Subjects/Keywords: Paleoproterozoic; Huronian; glaciation; rhythmites; varves; micro-laminae; Geology

…lithofacies at Outcrop A (A) bear a strong resemblance to Subgroup IIb varves (B)… …tidalites, turbidites, and varves, divisions that are based on the depositional processes from… …Supergroup, Canada have previously been identified as glacial varves (Lindsey, 1969; Hughes et… …similar to varves. This thesis examines the rhythmites and associated sedimentary deposits of… …depositional processes. If the rhythmic deposits can be confirmed as varves, each rhythmite will…

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APA (6^th Edition):

Howe, T. S. (2015). Investigating potential climatic cycles in glacially-influenced rhythmites of the upper Gowganda Formation using geochemical, sedimentological and spectral analyses. (Thesis). University of Western Ontario. Retrieved from https://ir.lib.uwo.ca/etd/3264

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Howe, Timothy S. “Investigating potential climatic cycles in glacially-influenced rhythmites of the upper Gowganda Formation using geochemical, sedimentological and spectral analyses.” 2015. Thesis, University of Western Ontario. Accessed March 05, 2021. https://ir.lib.uwo.ca/etd/3264.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Howe, Timothy S. “Investigating potential climatic cycles in glacially-influenced rhythmites of the upper Gowganda Formation using geochemical, sedimentological and spectral analyses.” 2015. Web. 05 Mar 2021.

Vancouver:

Howe TS. Investigating potential climatic cycles in glacially-influenced rhythmites of the upper Gowganda Formation using geochemical, sedimentological and spectral analyses. [Internet] [Thesis]. University of Western Ontario; 2015. [cited 2021 Mar 05]. Available from: https://ir.lib.uwo.ca/etd/3264.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Howe TS. Investigating potential climatic cycles in glacially-influenced rhythmites of the upper Gowganda Formation using geochemical, sedimentological and spectral analyses. [Thesis]. University of Western Ontario; 2015. Available from: https://ir.lib.uwo.ca/etd/3264

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Lund

12. Mellström, Anette. Investigations of temporal changes in climate and the geomagnetic field via high-resolution radiocarbon dating.

Degree: 2014, University of Lund

URL: https://lup.lub.lu.se/record/4443158 ; https://portal.research.lu.se/ws/files/3617675/4446270.pdf

► Geological archives have shown periods of abrupt climate change in the relatively stable Holocene epoch (last ca. 11 700 years). One of these periods was… (more)

▼ Geological archives have shown periods of abrupt climate change in the relatively stable Holocene epoch (last ca. 11 700 years). One of these periods was around 2800 cal BP. Several records, mainly from Europe, reveal a shift towards wetter, cooler and windier conditions. There are, however, indications for a global extent of the climate change. The climate change coincides with a distinct increase in the atmospheric radiocarbon (14C) concentration, which has been interpreted to be a result of decreased solar activity. Therefore, a solar-induced climate change has been suggested. In addition to changes in solar activity, geomagnetic field records also show prominent variations around 3000-2000 cal BP. In order to investigate the temporal development of past changes in climate and the geomagnetic field it is crucial to establish accurate and precise chronologies for such reconstructions. Well-constrained chronologies are crucial to determine leads and lags in the climate system as well as to investigate climate forcing factors, such as the potential influence of changes in solar activity. Further¬more, highly-resolved and well-dated geomagnetic field records are needed to improve our understanding of geomagnetic field variations and to evaluate suggested linkages between geomagnetic field and climate change. The general aim of this thesis is to improve the dating of changes in climate and the geomagnetic field via linking 14C results of closely spaced samples to the 14C calibration curve – the 14C wiggle-match dating technique – with focus on the period around 3000-2000 cal BP. The 14C wiggle-match dating technique was successfully applied to construct an accurate and precise chronology of the annually laminated (varved) sediments of Lake Gyltigesjön in south-west Sweden for the period around 3000-2000 cal BP. With this technique, it was possible to estimate the old-carbon effect (14C reservoir age) in the lake sediments. The bulk sediment based chronology was validated by comparison to the 14C ages of plant macrofossils. Similarly, the 14C wiggle-match dating technique was used to test the accuracy of a varve chronology of Lake Kälksjön in west-central Sweden for the same time period. The constructed chronologies of Lake Gyltigesjön and Lake Kälksjön have uncertainties of only ±30 and ±20 years (95.4% probability range), respectively. The well-constrained chronologies enabled investigations of the post-depositional remanent magnetisation lock-in effect and its influence on records of palaeomagnetic secular variation. In addition, the hypothesis of a solar-induced climate change in southern Sweden around 2800 cal BP was investigated. The peat record of Undarsmosse in south-west Sweden has previously indicated a change to increased storminess and wet¬ter conditions around this period. The 14C wiggle-match dating technique was applied to constrain the timing of these events. Within the age model uncertainties, the shift towards wetter and windier conditions in southern Sweden can be regarded synchronous with the climate…

Subjects/Keywords: Geology; wiggle-matching; Radiocarbon dating; 14C; 2800 cal BP; climate change; solar activity; palaeomagnetism; lake sediments; varves; post-depositional remanent magnetisation; PDRM; lock-in; peat deposits; Sweden

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APA (6^th Edition):

Mellström, A. (2014). Investigations of temporal changes in climate and the geomagnetic field via high-resolution radiocarbon dating. (Doctoral Dissertation). University of Lund. Retrieved from https://lup.lub.lu.se/record/4443158 ; https://portal.research.lu.se/ws/files/3617675/4446270.pdf

Chicago Manual of Style (16^th Edition):

Mellström, Anette. “Investigations of temporal changes in climate and the geomagnetic field via high-resolution radiocarbon dating.” 2014. Doctoral Dissertation, University of Lund. Accessed March 05, 2021. https://lup.lub.lu.se/record/4443158 ; https://portal.research.lu.se/ws/files/3617675/4446270.pdf.

MLA Handbook (7^th Edition):

Mellström, Anette. “Investigations of temporal changes in climate and the geomagnetic field via high-resolution radiocarbon dating.” 2014. Web. 05 Mar 2021.

Vancouver:

Mellström A. Investigations of temporal changes in climate and the geomagnetic field via high-resolution radiocarbon dating. [Internet] [Doctoral dissertation]. University of Lund; 2014. [cited 2021 Mar 05]. Available from: https://lup.lub.lu.se/record/4443158 ; https://portal.research.lu.se/ws/files/3617675/4446270.pdf.

Council of Science Editors:

Mellström A. Investigations of temporal changes in climate and the geomagnetic field via high-resolution radiocarbon dating. [Doctoral Dissertation]. University of Lund; 2014. Available from: https://lup.lub.lu.se/record/4443158 ; https://portal.research.lu.se/ws/files/3617675/4446270.pdf

Queens University

13. Chutko, Krystopher John. Sedimentary structural indicators of Arctic terrestrial and aquatic processes .

Degree: Geography, 2008, Queens University

URL: http://hdl.handle.net/1974/1220

► Annually and subannually laminated lacustrine sediments potentially contain a wide range of information that can be interpreted for paleoenvironmental reconstructions. These laminae are produced by… (more)

▼ Annually and subannually laminated lacustrine sediments potentially contain a wide range of information that can be interpreted for paleoenvironmental reconstructions. These laminae are produced by the physical and biological processes that operate in the lake and in the surrounding terrestrial environment. However, identification of the influences that control laminae production may not be straightforward, and other processes may subtly influence the overall depositional sequence. This thesis examines two different depositional environments on Colin Archer Peninsula, Devon Island, Canada, with the objective of identifying the factors that influence subannual sediment deposition and how the resultant sedimentary structures can be used as indicators of paleoenvironmental conditions. In proglacial Lake R, clastic sediment deposition is controlled primarily by subannual meteorological conditions. Periods of positive air temperature or large rainfall events produce discernable laminae that, when combined, form a varve sequence. However, overarching geomorphic controls influence the delivery of sediment to the lake and may reduce or enhance the hydrometeorological signal contained in the varves. An additional influence for calibration of the varve record to meteorological observations is the role that melt season thermal inversions have on temperature extrapolation in the High Arctic. Meteorological stations at sea level may not be representative of the surrounding region, thereby reducing the accuracy of vertical temperature estimation. Investigation of the inversions in the central Canadian High Arctic demonstrated that melt season inversions are common and increased inversion frequency may potentially have influenced enhanced glacial melt since the late 1980s, with implications for proglacial lake sediment transport and deposition. In coastal Lake J, late Holocene sediments record a relatively unusual accumulation of microbially induced sedimentary structures (MISS). Such a record has not been previously described in the circum-Arctic, although they are known to exist elsewhere. These sediments are produced by the interaction between clastic sedimentation and cyanobacterial growth and production. Although chronological constraint could not be assigned with certainty to the record, statistical study of the laminated sequence suggested a dominant pattern that is plausibly annual. A heuristic model of annual sediment accumulation was developed in order to explore the potential for quasi-annual paleoenvironmental interpretations.

Subjects/Keywords: Lacustrine sediment ; Varves ; Microbially induced sedimentary structures ; Arctic ; Thermal inversion ; Subannual laminae

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APA (6^th Edition):

Chutko, K. J. (2008). Sedimentary structural indicators of Arctic terrestrial and aquatic processes . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/1220

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chutko, Krystopher John. “Sedimentary structural indicators of Arctic terrestrial and aquatic processes .” 2008. Thesis, Queens University. Accessed March 05, 2021. http://hdl.handle.net/1974/1220.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chutko, Krystopher John. “Sedimentary structural indicators of Arctic terrestrial and aquatic processes .” 2008. Web. 05 Mar 2021.

Vancouver:

Chutko KJ. Sedimentary structural indicators of Arctic terrestrial and aquatic processes . [Internet] [Thesis]. Queens University; 2008. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1974/1220.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chutko KJ. Sedimentary structural indicators of Arctic terrestrial and aquatic processes . [Thesis]. Queens University; 2008. Available from: http://hdl.handle.net/1974/1220

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

14. Lafontaine-Boyer, Karelle K.L.B. Dynamiques de la végétation en regard des variabilités climatiques au cours de l'Holocène tardif, Outaouais, Québec.

Degree: 2014, University of Ottawa

URL: http://hdl.handle.net/10393/30360

► Un profil pollinique provenant d'un lac possédant des sédiments laminés (varves), le lac Brûlé (45°43'09" N, 75°26'32"O 270m), a servi à étudier l'histoire de la… (more)

Subjects/Keywords: Palynologie; Paléoclimatologie; Paléoécologie; Holocène tardif; Changements climatiques; Québec; Forêt décidue; Incendie forestier; Varves

…Brûlé, Québec. 58 Figure 2. Varves autour de 40 cm (1400 AD) dans la carotte #5… …rythme saisonnier, les lamines ainsi développées sont appelées «varves». Les varves se… …formation des varves est en réponse � différents processus climatiques, hydrologiques… …limnologiques et biologiques (Ojala et al., 2012). Les lacs qui développent des varves… …x29;. Bien qu'ils ne soient pas indispensables � la conservation des varves, il a été…

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APA (6^th Edition):

Lafontaine-Boyer, K. K. L. B. (2014). Dynamiques de la végétation en regard des variabilités climatiques au cours de l'Holocène tardif, Outaouais, Québec. (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/30360

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lafontaine-Boyer, Karelle K L B. “Dynamiques de la végétation en regard des variabilités climatiques au cours de l'Holocène tardif, Outaouais, Québec. ” 2014. Thesis, University of Ottawa. Accessed March 05, 2021. http://hdl.handle.net/10393/30360.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lafontaine-Boyer, Karelle K L B. “Dynamiques de la végétation en regard des variabilités climatiques au cours de l'Holocène tardif, Outaouais, Québec. ” 2014. Web. 05 Mar 2021.

Vancouver:

Lafontaine-Boyer KKLB. Dynamiques de la végétation en regard des variabilités climatiques au cours de l'Holocène tardif, Outaouais, Québec. [Internet] [Thesis]. University of Ottawa; 2014. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10393/30360.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lafontaine-Boyer KKLB. Dynamiques de la végétation en regard des variabilités climatiques au cours de l'Holocène tardif, Outaouais, Québec. [Thesis]. University of Ottawa; 2014. Available from: http://hdl.handle.net/10393/30360

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

15. Paquette, Nathalie. Climatic Change Causes Abrupt Shifts in Forests, Inferred from a High-resolution Lacustrine Record, Southwestern Quebec, Canada .

Degree: 2012, University of Ottawa

URL: http://hdl.handle.net/10393/23473

► A pollen profile from varved lake sediments sampled at 10-year intervals and spanning the past 1000 years is analyzed to understand the effects of climate… (more)

Subjects/Keywords: Varves; Québec; Holocene; Pollen; Forest Dynamics; Paleoclimate Reconstruction; Charcoal; Eastern Deciduous Forest; Lake Sediments

…List of Figures Figure 2.1 3.1 3.2 3.3 Caption Varves from Lac Noir, Core #2, 52.5 cm… …3 because the varves were turbulated further down the core than the other two… …Tippett, 1964). The presence of varves also permits the more accurate estimation of pollen… …As the chronology is based on varves in this study, and these correspond to calendar years… …sediments and therefore it is important to discuss what varves are and how they are formed. Varved…

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APA (6^th Edition):

Paquette, N. (2012). Climatic Change Causes Abrupt Shifts in Forests, Inferred from a High-resolution Lacustrine Record, Southwestern Quebec, Canada . (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/23473

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Paquette, Nathalie. “Climatic Change Causes Abrupt Shifts in Forests, Inferred from a High-resolution Lacustrine Record, Southwestern Quebec, Canada .” 2012. Thesis, University of Ottawa. Accessed March 05, 2021. http://hdl.handle.net/10393/23473.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Paquette, Nathalie. “Climatic Change Causes Abrupt Shifts in Forests, Inferred from a High-resolution Lacustrine Record, Southwestern Quebec, Canada .” 2012. Web. 05 Mar 2021.

Vancouver:

Paquette N. Climatic Change Causes Abrupt Shifts in Forests, Inferred from a High-resolution Lacustrine Record, Southwestern Quebec, Canada . [Internet] [Thesis]. University of Ottawa; 2012. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10393/23473.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Paquette N. Climatic Change Causes Abrupt Shifts in Forests, Inferred from a High-resolution Lacustrine Record, Southwestern Quebec, Canada . [Thesis]. University of Ottawa; 2012. Available from: http://hdl.handle.net/10393/23473

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Cincinnati

16. Stroup, Justin Sirico. Glacial Lake Ojibway, lacustrine stratigraphy and implications for drainage.

Degree: MS, Arts and Sciences : Geology, 2009, University of Cincinnati

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1243303456

► Some short term climate reversals on the order of centuries are perceived to be generated by coupled feed backs in individual systems. It has been… (more)

Subjects/Keywords: Geology; Lake Ojibway; lacustrine; 8,200 year event; lake cores; XRF chemistry; stratigraphy; Laurentide; Ice proximal; varves; drainage; Canada

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APA (6^th Edition):

Stroup, J. S. (2009). Glacial Lake Ojibway, lacustrine stratigraphy and implications for drainage. (Masters Thesis). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1243303456

Chicago Manual of Style (16^th Edition):

Stroup, Justin Sirico. “Glacial Lake Ojibway, lacustrine stratigraphy and implications for drainage.” 2009. Masters Thesis, University of Cincinnati. Accessed March 05, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1243303456.

MLA Handbook (7^th Edition):

Stroup, Justin Sirico. “Glacial Lake Ojibway, lacustrine stratigraphy and implications for drainage.” 2009. Web. 05 Mar 2021.

Vancouver:

Stroup JS. Glacial Lake Ojibway, lacustrine stratigraphy and implications for drainage. [Internet] [Masters thesis]. University of Cincinnati; 2009. [cited 2021 Mar 05]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1243303456.

Council of Science Editors:

Stroup JS. Glacial Lake Ojibway, lacustrine stratigraphy and implications for drainage. [Masters Thesis]. University of Cincinnati; 2009. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1243303456

Johannes Gutenberg Universität Mainz

17. Diehl, Markus. Palynologie und Sedimentologie der Interglazialprofile Döttingen, Bonstorf, Munster und Bilshausen.

Degree: 2007, Johannes Gutenberg Universität Mainz

URL: http://ubm.opus.hbz-nrw.de/volltexte/2007/1319/

► Palynologie und Sedimentologie der Interglazialprofile Döttingen, Bonstorf, Munster und Bilshausen Zusammenfassung In der vorliegenden Dissertation wurden vier dem Holstein-Interglazial zugehörige Bohrkerne sowie ein rhumezeitlicher Bohrkern… (more)

▼ Palynologie und Sedimentologie der Interglazialprofile Döttingen, Bonstorf, Munster und Bilshausen Zusammenfassung In der vorliegenden Dissertation wurden vier dem Holstein-Interglazial zugehörige Bohrkerne sowie ein rhumezeitlicher Bohrkern palynologisch und sedimentologisch bearbeitet. Die holsteinzeitlichen Bohrkerne stammen aus Kieselgurlagerstätten der Lüneburger Heide (Bonstorf und Munster) und aus einem Trockenmaar (Döttingen) in der Eifel. Der rhumezeitliche Kern stammt aus der Typlokalität Bilshausen im Harzvorland. Neben Prozentwertdiagrammen werden Pollendichte- und wenn möglich Polleninfluxwerte vorgestellt, die insbesondere für die Lokalitäten Hetendorf/Bonstorf und Munster/Breloh bisher nicht verfügbar waren. Mit dem Profil Döttingen konnte erstmals eine sowohl vollständige als auch nicht innerhalb des klassischen Aufkommens holsteinzeitlicher Fundstellen im norddeutschen Tiefland positionierte Holsteinsequenz aus dem deutschen Mittelgebirge dokumentiert werden. Das erhaltene Pollendiagramm bestätigt die aus den norddeutschen Profilen bekannte holsteintypische Vegetationsabfolge, durch die das Holstein gegenüber anderen Interglazialen wie Holozän, Eem oder Rhume palynologisch definiert ist. Neben der grundsätzlichen Übereinstimmung der Pollensequenz unterscheidet sich das Profil Döttingen aber deutlich im prozentualen Aufkommen der beteiligten Taxa von den norddeutschen Profilen. So wird eine hohe Alnus-Präsenz als Merkmal deutscher Holsteinprofile bestätigt, jedoch ist die, in den norddeutschen Lokalitäten durchhaltend hohe oder dominante Beteiligung von Pinus im deutschen Mittelgebirge nicht vorhanden und muss daher auf die Standortbedingungen Norddeutschlands zurückgeführt werden. Abies dagegen ist im Holstein der Mittelgebirge wesentlich präsenter als im norddeutschen Flachland. Im Profil Döttingen wurden insgesamt 10 Tephralagen gefunden. Auf eine dieser Tephren folgt ein „Birken-Kiefern-Gräser Vorstoß“, der palynostratigraphisch dem älteren „Birken-Kiefern Vorstoß“ in Munster/Breloh entspricht. Als eine Typologie des Holstein kann das in den Profilen Döttingen und Munster bestätigte intraholsteinzeitliche Carpinus-Minimum verstanden werden. An Hand sedimentologischer und palynologischer Befunde aus dem Bohrkern MU 2 muss die Existenz zweier, in der Literatur postulierter, postholsteinzeitlicher, „Nachschwankungen“ in Munster/Breloh in Frage gestellt, wenn nicht abgelehnt werden. In Kern MU 2 fallen palynostratigraphische Grenzen häufig mit Sandeinschaltungen zusammen. Eine dieser Sandeinschaltungen, nämlich unmittelbar vor dem älteren „Birken-Kiefern-Vorstoß“, korreliert in ihrer stratigraphischen Position mit der den „Birken-Kiefern-Gräser-Vorstoß“ im Profil Döttingen einleitenden Tephralage. Es gelang die Dauer des intraholsteinzeitlichen Carpinus Minimums auf etwa 1500±100 Jahre zu bestimmen und eine interne Zweigliederung zu dokumentieren. Im rhumezeitlichen Kern von Bilshausen (BI 1) konnten zahlreiche Störungen nachgewiesen werden. Insbesondere im Teufenbereich des Bilshausener…

Subjects/Keywords: Palynologie Pollen Holstein Rhume Döttingen Hetendorf Bonstorf Munster Breloh Bilshausen Eifel Harz Kieselgur Maar Interglazial Warven; Palynology Pollen Holsteinian Rhume Döttingen Hetendorf Bonstorf Munster Breloh Bilshausen Eifel Harz Kieselgur Maar Interglacial Varves; Earth sciences

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Diehl, M. (2007). Palynologie und Sedimentologie der Interglazialprofile Döttingen, Bonstorf, Munster und Bilshausen. (Doctoral Dissertation). Johannes Gutenberg Universität Mainz. Retrieved from http://ubm.opus.hbz-nrw.de/volltexte/2007/1319/

Chicago Manual of Style (16^th Edition):

Diehl, Markus. “Palynologie und Sedimentologie der Interglazialprofile Döttingen, Bonstorf, Munster und Bilshausen.” 2007. Doctoral Dissertation, Johannes Gutenberg Universität Mainz. Accessed March 05, 2021. http://ubm.opus.hbz-nrw.de/volltexte/2007/1319/.

MLA Handbook (7^th Edition):

Diehl, Markus. “Palynologie und Sedimentologie der Interglazialprofile Döttingen, Bonstorf, Munster und Bilshausen.” 2007. Web. 05 Mar 2021.

Vancouver:

Diehl M. Palynologie und Sedimentologie der Interglazialprofile Döttingen, Bonstorf, Munster und Bilshausen. [Internet] [Doctoral dissertation]. Johannes Gutenberg Universität Mainz; 2007. [cited 2021 Mar 05]. Available from: http://ubm.opus.hbz-nrw.de/volltexte/2007/1319/.

Council of Science Editors:

Diehl M. Palynologie und Sedimentologie der Interglazialprofile Döttingen, Bonstorf, Munster und Bilshausen. [Doctoral Dissertation]. Johannes Gutenberg Universität Mainz; 2007. Available from: http://ubm.opus.hbz-nrw.de/volltexte/2007/1319/

University of Alberta

18. Kent, Michael John. Depositional environment of fine-grained sediments in late-glacial Lake Penticton.

Degree: MS, Department of Geography, 1978, University of Alberta

URL: https://era.library.ualberta.ca/files/3r074w999

Subjects/Keywords: Glacial lakes – British Columbia – Okanagan River Valley – Historical geography.; Lake sediments – British Columbia – Okanagan Lake.; Lake sediments – British Columbia – Okanagan River Valley.; Varves – British Columbia – Okanagan River Valley.; Drift – British Columbia – Okanagan River Valley.; Periglacial processes – British Columbia – Okanagan River Valley – Historical geography.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kent, M. J. (1978). Depositional environment of fine-grained sediments in late-glacial Lake Penticton. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/3r074w999

Chicago Manual of Style (16^th Edition):

Kent, Michael John. “Depositional environment of fine-grained sediments in late-glacial Lake Penticton.” 1978. Masters Thesis, University of Alberta. Accessed March 05, 2021. https://era.library.ualberta.ca/files/3r074w999.

MLA Handbook (7^th Edition):

Kent, Michael John. “Depositional environment of fine-grained sediments in late-glacial Lake Penticton.” 1978. Web. 05 Mar 2021.

Vancouver:

Kent MJ. Depositional environment of fine-grained sediments in late-glacial Lake Penticton. [Internet] [Masters thesis]. University of Alberta; 1978. [cited 2021 Mar 05]. Available from: https://era.library.ualberta.ca/files/3r074w999.

Council of Science Editors:

Kent MJ. Depositional environment of fine-grained sediments in late-glacial Lake Penticton. [Masters Thesis]. University of Alberta; 1978. Available from: https://era.library.ualberta.ca/files/3r074w999

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