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Skip to Search Results- 1Alejandro, Alvarez
- 1Anwar, Taslima
- 1Bandara, Sasiri
- 1Barclay, Kristina M
- 1Black, Meghan E
- 1Borowiecki, Ryan
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Study of the Chinese loess and Siberian flood basalts: new global scale insights to the paleoclimate and geomagnetic field changes
DownloadSpring 2017
Paleomagnetism, in conjunction with other earth science methods, studies the behavior of the Earth's magnetic field, the drift of tectonic plate, climate and environmental changes. This thesis implements different applications of paleomagnetism to develop a technique to evaluate age for the...
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Records of atmospheric mercury deposition and post-depositional mobility in peat permafrost archives from central and northern Yukon, Canada
DownloadFall 2017
Environmental archives provide a feasible means for studying the biogeochemical cycling of heavy metals including mercury (Hg). Although many temperate peat bogs have been successfully used to reconstruct natural and anthropogenic atmospheric Hg deposition fluxes, northern circumpolar permafrost...
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The Biology of Sclerobionts and their Hosts: Comparing Biomechanical Experiments on Brachiopod Hosts to Sclerobiont Distribution Maps
DownloadFall 2014
Sclerobionts and their host organisms provide a great deal of information for palaeoecological and palaeoenvironmental studies. However, any interpretation of sclerobiont – host relationships depends on an understanding of the host’s orientation. In the past, distinction of host life and...
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Postglacial Human and Environmental Landscapes of Northeastern Alberta: An analysis of a late Holocene sediment record from Sharkbite Lake, Alberta
DownloadSpring 2019
Sharkbite Lake lies in northeastern Alberta’s lower Athabasca River Valley, within which lies the modern boundaries of the Mineable Oil Sands Region (MOSR). Much of the palaeoecological research to date has addressed the establishment of the Boreal Forest; however, the late Holocene...
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Fall 2016
The Alaska Highway through Southwestern Yukon is located in the discontinuous permafrost zone with many areas of the highway corridor associated with degrading permafrost. Given the strategic value of the corridor, it is critical to have a clear understanding of permafrost characteristics and...
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Sequence Stratigraphy, Porosity, and Primary Producers of the Middle to Late Devonian Canol Formation, Northwest Territories, Canada
DownloadFall 2022
The Devonian Canol Formation of the Northwest Territories (NWT) is an organic-rich mudstone interval deposited in a tropical marine setting along the west coast of Ancestral North America. This unit preserves a record of local marine conditions in the Middle to Late Devonian, a time characterized...
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The Late Holocene White River Ash East Eruption and Pre-contact Culture Change in Northwest North America
DownloadSpring 2020
The White River Ash East eruption of A.D. 846-848 blanketed portions of Subarctic Yukon and Northwest Territories, Canada in volcanic ash. This dissertation examines impacts of the eruption on pre-contact hunter-gatherer social relationships. The main bodies of data on which interpretations are...
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Porosity and permeability in the Graminia Formation, Upper Devonian Winterburn Group in the Germain Field, northeastern Alberta
DownloadFall 2014
The Upper Devonian Graminia Formation (Winterburn Group) found in the Germain Field of northeastern Alberta includes the Blueridge Member (Frasnian) and the Upper Graminia Member (Famennian). A green silty-shale paleosol overlies the formation in this area. The bitumen-bearing dolostones of this...
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Environmental Controls on Alternating Aragonite-calcite Laminations in Notch-speleothems from Cayman Brac, Cayman Islands, British West Indies
DownloadFall 2017
Speleothems that grow in semi-exposed surface environments, such as wave-cut notches, are not well understood despite their widespread distribution. The +6.4 m-high wave-cut notch on Cayman Brac, that formed ~ 125 ka ago, is decorated with stalactites, stalagmites, and columns that grew between...
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Spring 2023
Centennial, millennial and multi-millennial scale climate cycles have been observed in paleoclimate proxies distributed globally. Examples of these cyclical climate cycles include oscillations with periods of ~2.3, ~1.5, ~1, and ≤0.5 thousand years (kyr) in the Quaternary. In the Neogene, longer...