Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 4 of 4 for “"Ocean anoxic events"”.
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The Aptian-Albian ironstone of the Rapid Creek formation, Little Fish Creek, NWT: implications for Cretaceous Ocean Anoxic Events and critical mineral deposits
… Western Interior Seaway to the nascent Arctic Ocean. The focus of this thesis is on the sedimentology and sequence stratigraphy of the Rapid Creek formation along Little Fish Creek, Northwest Territories. The Rapid Creek formation thins from ~1000 m thick at the type section in the Yukon …
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A Microbial Survey of Lake Kivu: Mechanisms of Nitrogen Cycling
Ocean Anoxic Events (OAEs) are periods in Earth’s history during which large por-tions of the oceans contain decreased amounts of oxygen. OAEs can be very difficult to study since modern oceans are generally well-oxygenated. Here Lake Kivu, a meromictic lake with deep anoxic layers, is presented as …
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Spatial heterogeneity in isotope and biomarker distributions : insights from the End-Devonian OAE in Western Canada.
… column is periodically disrupted by surface ocean current divergence experience upwelling, where deep, nutrient-rich waters rise to the surface, supporting high primary productivity. This comprehensive study of carbon and nitrogen isotopic composition, biomarker distribution, and trace …