| Abstract: | A volcanic-ash sample obtained after the 1980 eruption of Mount St. Helens, Washington, was analyzed for cyclic terpenoid organic compounds and polycyclic aromatic hydrocarbons using capillary gas chromatography-mass spectrometry-computer techniques. Various tricyclic diterpenoid acids and hydrocarbons were identified including dehydroabietic acid, dehydroabietin, dehydroabietane, simonellite, and retene. Preliminary evidence indicates that these compounds were derived from forest soils or atmospheric aerosols or both in the vicinity of coniferous forests. A diagenetic scheme involving three possible pathways for the conversion of abietic acid to retene is presented. ?? 1983. |
| Genre: | Article |
| ProdID: | 70012118 |
| Citation Author: | Pereira, W. E.; Rostad, C. E. |
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| Citation End Page: | 2291 |
| Citation Issue: | 12 |
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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: | Terpenoid marker compounds derived from biogenic precursors in volcanic ash from Mount St. Helens, Washington; 1983; Article; Journal; Geochimica et Cosmochimica Acta; Pereira, W. E.; Rostad, C. E. |
| Citation Start Page: | 2287 |
| Citation Volume: | 47 |
| Citation Year: | 1983 |
| Type: | citation/reference |
| Text: | Terpenoid marker compounds derived from biogenic precursors in volcanic ash from Mount St. Helens, Washington; 1983; Article; Journal; Geochimica et Cosmochimica Acta; Pereira, W. E.; Rostad, C. E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Sat, 1 Jan 1983 00:00 -0600 |
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