| Abstract: | Obsidian hydration dating of volcanic events had been compared with ages of the same events determined by the 14C and KAr methods at several localities. The localities, ranging in age from 1200 to over 1 million yr, include Newberry Craters, Oregon; Coso Hot Springs, California; Salton Sea, California; Yellowstone National Park, Wyoming; and Mineral Range, Utah. In most cases the agreement is quite good. A number of factors including volcanic glass composition and exposuretemperature history must be known in order to relate hydration thickness to age. The effect of composition can be determined from chemical analysis or the refractive index of the glass. Exposure-temperature history requires a number of considerations enumerated in this paper. ?? 1981. |
| Genre: | Article |
| ProdID: | 70012031 |
| Citation Author: | Friedman, I.; Obradovich, J. |
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| Citation End Page: | 47 |
| Citation Issue: | 1 |
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| Citation Language: | English |
| Citation Larger Work Title: | Quaternary Research |
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| Citation Number Of Pages: | 11 |
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| Citation Search Results Text: | Obsidian hydration dating of volcanic events; 1981; Article; Journal; Quaternary Research; Friedman, I.; Obradovich, J. |
| Citation Start Page: | 37 |
| Citation Volume: | 16 |
| Citation Year: | 1981 |
| Type: | citation/reference |
| Text: | Obsidian hydration dating of volcanic events; 1981; Article; Journal; Quaternary Research; Friedman, I.; Obradovich, J. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Thu, 1 Jan 1981 00:00 -0600 |
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