| Abstract: | GC-MS analyses were performed on core samples collected from a shale outcrop of the Permian Phosphoria Formation in Utah, U.S.A., to study effects of weathering on selected biological marker and aromatic (phenanthrene) hydrocarbon compounds. Among the biological markers, the most important weathering effects are a decrease in the 20S 20R diastereomer ratio of the C29 steranes and loss of low molecular weight triaromatic steroids. A decrease in the C19 through C22 tricylcic terpanes occurs relative to the total C19-C26 tricyclic fraction. Pronounced loss of methyl-substituted phenanthrenes occurs relative to phenanthrene. No major effect on the overall distribution of pentacyclic terpanes is evident. ?? 1987. |
| Genre: | Article |
| ProdID: | 70014156 |
| Citation Author: | Clayton, J. L.; King, J. D. |
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| Citation End Page: | 2157 |
| Citation Issue: | 8 |
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| Citation Language: | English |
| Citation Larger Work Title: | Geochimica et Cosmochimica Acta |
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| Citation Number Of Pages: | 5 |
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| Citation Search Results Text: | Effects of weathering on biological marker and aromatic hydrocarbon composition of organic matter in Phosphoria shale outcrop; 1987; Article; Journal; Geochimica et Cosmochimica Acta; Clayton, J. L.; King, J. D. |
| Citation Start Page: | 2153 |
| Citation Volume: | 51 |
| Citation Year: | 1987 |
| Type: | citation/reference |
| Text: | Effects of weathering on biological marker and aromatic hydrocarbon composition of organic matter in Phosphoria shale outcrop; 1987; Article; Journal; Geochimica et Cosmochimica Acta; Clayton, J. L.; King, J. D. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Thu, 1 Jan 1987 00:00 -0600 |
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