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Skip to Search Results- 1Acosta, P
- 1Aubet, Natalie
- 1Baniak, Gregory M
- 1Beaton, Neil I.
- 1Belosevic, Michael B.K.
- 1Bolton, Matthew
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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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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...
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Genesis and controls on mineralization at the Hammer Zone silver showing, Mount Mye Trend, hosted by the Anvil Batholith, South-Central Yukon
DownloadFall 2017
When Silver Range resources acquired the Keg property in 2010, one of the prospects included was the Hammer Zone. Ensuing mapping and surface sampling found the Hammer Zone to be a small, bonanza-grade, epithermal silver system contained entirely within the Anvil Batholith. Initial petrographic...
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Geochemical, petrophysical and geomechanical properties of stratigraphic sequences in Horn River Shale, Middle and Upper Devonian, Northeastern British Columbia, Canada
DownloadSpring 2016
The Middle and Upper Devonian Horn River Shale, comprising the Evie and Otter Park members and the Muskwa Formation, northeast British Columbia, Canada is recognized as a significant shale gas reservoir in the Western Canada Sedimentary Basin. However, many aspects of this shale formation have...
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Geochemistry, Geochronology, and Fluid Inclusion Study of the Newton Epithermal Gold, and Morrison Porphyry Copper Deposits, British Columbia
DownloadFall 2015
Petrologic, geochemical, geochronological, and fluid inclusion studies were conducted on the Newton epithermal and Morrison porphyry deposits in central British Columbia, as a part of a large collaborative research project to combine geological, ZTEM, magnetotelluric, and magnetic studies, in...
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Geochronology, Isotope Geochemistry, and Molybdenum Distribution in the Central African Copperbelt: Examples from Chibuluma West, Kamoa, and Kipushi
DownloadSpring 2019
The Chibuluma West, Kamoa, and Kipushi stratiform deposits of the Central African Copperbelt have been evaluated using a series of geochemical techniques to better constrain the timing and origin of these deposits, with relevance to the origin of the Copperbelt as a whole. Petrographic, isotopic...
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Geology and geochemistry of late Devonian-Mississipian sediment-hosted barite sequences of the Selwyn Basin, NWT and Yukon, Canada
DownloadFall 2011
A sediment-hosted barite horizon occurs in the upper part of the lower Earn Group in the Selwyn Basin, NWT, Canada. This horizon consists of synsedimentary, laminated barite and diagenetic, nodular barite which are hosted in shale, siltstone and mudstone. The lithogeochemistry of the sediments...
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Geology, Geochemistry, Geochronology, and economic potential of the Taftan volcanic complex, southeastern Iran
DownloadFall 2015
Razavi Khosroshahi, Seyed Amir Mohammad
The late Miocene-Quaternary Taftan volcanic complex is located above the Makran subduction zone in Sistan and Baluchestan province of southeastern Iran. The earliest volcanic eruptions at Taftan started in the late Miocene (~8 Ma) by explosive eruption of andesitic to dacitic lava on the...