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Skip to Search Results- 4Graduate and Postdoctoral Studies (GPS), Faculty of
- 4Graduate and Postdoctoral Studies (GPS), Faculty of /Theses and Dissertations
- 1Biological Sciences, Department of
- 1Biological Sciences, Department of/Research Data and Materials (Biological Sciences)
- 1ERA General Collection
- 1ERA General Collection/Supplementary Thesis Materials (ERA General)
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Data associated with Aragones and Leys - "The sponge pump as a morphological character in the fossil record"
Download2021-08-13
The timing of early animal evolution remains one of the biggest conundrums in biology. Molecular data suggest Porifera diverged from the metazoan lineage some 800 Ma to 650 Ma, which contrasts with the earliest widely accepted fossils of sponges at 535 Ma. However, the lack of criteria by which...
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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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Paleomagnetism and paleogeographic reconstructions of the North China Craton in the Late Carboniferous - Early Permian and the South China Craton in the Late Ediacaran - Early Cambrian
DownloadFall 2022
Abstract The robustness of paleogeographic reconstructions of the North China Craton (NCC) and South China Craton (SCC) in the Ediacaran - Paleozoic is greatly affected by a small number of high-reliability paleomagnetic poles. Reduced reliability of available paleomagnetic data is attributed to...
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Zinc in Precambrian iron formations: The record, partitioning, diagenetic effects and implications for eukaryotic metallome evolution
DownloadFall 2013
Zinc is amongst the most important trace elements for eukaryotes. Previous work has suggested it to have been at biolimiting concentrations for much of the Precambrian, thereby limiting eukaryotic evolution. Yet, the iron formation (IF) record, a critical proxy for paleomarine conditions, has...
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Zinc in Precambrian iron formations: The record, partitioning, diagenetic effects and implications for eukaryotic metallome evolution - Supplemental FIles
Zinc in Precambrian iron formations: The record, partitioning, diagenetic effects and implications for eukaryotic metallome evolution - Supplemental FIles
Download2013-01-01
Contains files related to the thesis "Zinc in Precambrian iron formations: The record, partitioning, diagenetic effects and implications for eukaryotic metallome evolution," Leslie J. Robbins, Fall 2013.