Continental depositon of Antarctic tillite indicated by carbon and oxygen isotopes

D. L. Schmidt; Irving Friedman

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USGS · 70156521

Continental depositon of Antarctic tillite indicated by carbon and oxygen isotopes

D. L. Schmidt·Irving Friedman

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Abstract

Freshwater deposition of the upper Paleozoic, Gondwana tillite in the Pensacola Mountains is indicated by low δ values of +4.9 to +6.1 permil δ0 1 8 (SMOW) and -1.8 to -15.9 permil δC 1 3 (PDB) in primary sedimentary calcite within the tillite. In contrast, Cambrian marine limestone from the Pensacola Mountains contains heavy isotopic abundances that are entirely characteristic of marine deposition.

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Journal of Research of the U.S. Geological Survey Article

Source-reported bounding extent: -83.54491212570046° to -82.20528216036382° latitude; -58.16162109375° to -45.615234375° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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D. L. Schmidt, Irving Friedman. 1974. Continental depositon of Antarctic tillite indicated by carbon and oxygen isotopes. https://pubs.usgs.gov/publication/70156521

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