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Skip to Search Results- 1Acosta, P
- 1Aggarwal, Pradeep Kumar
- 1Ashrafi Moghadam, Alireza
- 1Aubet, Natalie
- 1Baniak, Gregory M
- 1Beaton, Neil I.
- 2Alessi, Daniel (Earth and Atmospheric Sciences)
- 2Chacko, Thomas (Earth and Atmospheric Sciences)
- 2Derocher, Andrew (Biological Sciences)
- 2Pearson, Graham (Earth and Atmospheric Sciences)
- 2Richards, Jeremy (Earth and Atmospheric Sciences)
- 2Stachel, Thomas (Earth and Atmospheric Sciences)
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Diagenetic Controls on Hydrothermal Fluid Flow in the Osiris, Isis, and Isis East Carlin-Type Gold Showings, Nadaleen Trend, Yukon
DownloadFall 2015
Following ATAC Resources Ltd.’s 2010 discovery of the gold prospects in the Nadaleen Trend (Central Yukon), company geologists and consultants determined that Precambrian carbonate rocks within the trend contain large endowments of gold located in the hinges of anticlines and fault zones. ...
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Ediacaran iron formations and carbonates from Uruguay: palaeoceanographic, palaeoclimatic and palaeobiologic implications
DownloadFall 2010
The Ediacaran in Uruguay preserves a unique record of deposits generated during the assembly of the palaeocontinent Gondwana and concurrent with major changes in the atmosphere and oceans, and the rise of animal life. Recent studies have suggested that the deep oceans remained anoxic and highly...
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Effects of salinity on the leaching of ionic species from the Duvernay Formation, a Canadian hydraulic fracturing play
DownloadSpring 2021
Hydraulic fracturing combined with horizontal drilling has revolutionized the oil and gas industry in North America. The majority of Canada’s hydraulic fracturing operations are in Alberta and British Columbia, with the Montney and Duvernay formations ranked highest in five hydraulically...
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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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Evidence of euxinia in the Norian of western Canada: Implications to halobiid and monotid paleoecology and the sedimentology of the Pardonet formation
DownloadSpring 2024
The Norian Pardonet formation tops a well-studied Triassic stratigraphy in Western Canada which can be viewed in outcrop along the shores of Williston Lake, B. C. The Pardonet itself, however, has remained rather enigmatic. The formation is composed of dominantly finegrained, organic-rich...
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Expression of Major and Trace Element Signatures of the Frasnian Duvernay Formation within a Sea Level Context: insights into the processes that control mudstone composition, paleoredox conditions and organic matter enrichment
DownloadSpring 2016
This study evaluates the effects of sea level on redox conditions, shale composition and sediment provenance in the Late Devonian (Frasnian) Duvernay Formation of the Western Canada Sedimentary Basin (WCSB) of Alberta, Canada, an organic-rich ‘black’ shale localized between the reefs and...
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Factors affecting larval growth and development of the boreal chorus frog Pseudacris maculata
DownloadFall 2010
The boreal chorus frog (Pseudacris maculata) is a widespread species but we know little of its ecology. I examined the nature and existence of competitive mechanisms operating between larvae of the boreal chorus frog and wood frog (Lithobates sylvaticus) from field, mesocosm and laboratory venues...
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Fall 2015
Specialist predators with a limited diet may be less adaptable to environmental change than generalists, which consume a diversity of prey. As the climate changes, ecological homogenization is occurring, where generalist species outcompete specialists, reducing ecosystem complexity. In Arctic...
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Freshwater microbialites from Laguna Bacalar, Quintana Roo, Mexico: effects controlling their growth
DownloadFall 2014
Microbialites are among the oldest direct evidence of life on Earth. They reached their greatest abundance and diversity during the Proterozoic and decline thereafter. The decline has been attributed to grazing and/or burrowing by metazoan, to changes in ocean chemistry leading to a drop in...