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 “"Carbonate Clasts"”.
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Geochemical and Paleontological investigations of the Neoproterozoic-Cambrian Transition: Case Studies on geochemical clast provenance, emerging paleo redox proxies, and ambiguous dubiofossils
… first chapter of this dissertation examines the carbonate clasts from a glacial diamictite deposited at the end of the Cryogenian Period in South China. By determining the source locality of those carbonate clasts using stable carbon and oxygen isotope compositions, we can better understand the …
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Evolution of the Kingman Arch, southern Nevada
… Neoproterozoic quartzite, and Paleozoic carbonate clasts. Studies of clast type and provenance, together with qualitative analysis of paleoflow indicators, suggest that sediment was eroded from the Kingman Arch and highlands to the west and transported to the east and northeast.
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The Middle Ordovician Fincastle conglomerate north of Roanoke, Virginia and its implications for Blue Ridge tectonism
Clasts within the Fincastle conglomerate indicate that more than 15,000 ft of structural relief had developed between the axis of the Blue Ridge anticlinorium and the trough of the Salem synclinorium by Middle Ordovician time. The Fincastle conglomerate is restricted to the northeast depression of …
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Gold and Base Metal Mineralization, Hydrothermal Alteration and Vein Paragenesis in the Spring Valley Deposit, Pershing County, Nevada
… It occurs in a series of crosscutting quartz-carbonate ± pyrite ± tourmaline ± sphalerite ± galena veins of clear mesozonal origin associated with weakly to strongly pervasive quartz-sericite-pyrite-carbonate ± tourmaline alteration. Initial classification as a porphyry gold system is thus …