| Abstract: | Using cosmogenic 36Cl buildup and rock varnish radiocarbon, we have measured the exposure age of rock surfaces at Meteor Crater, Arizona. Our 36Cl measurements on four dolomite boulders ejected from the crater by the impact yield a mean age of 49.7 ?? 0.85 ka, which is in excellent agreement with an average age of 49 ?? 3 ka obtained from thermoluminescence studies on shock-metamorphosed dolomite and quartz. These ages are supported by undetectably low 14C in the oldest rock varnish sample. ?? 1991. |
| Genre: | Article |
| ProdID: | 70016502 |
| Citation Author: | Phillips, F. M.; Zreda, M. G.; Smith, S. S.; Elmore, D.; Kubik, P. W.; Dorn, R. I.; Roddy, D. J. |
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| Citation End Page: | 2698 |
| Citation Issue: | 9 |
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| Citation Language: | English |
| Citation Larger Work Title: | Geochimica et Cosmochimica Acta |
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| Citation Number Of Pages: | 4 |
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| Citation Search Results Text: | Age and geomorphic history of Meteor Crater, Arizona, from cosmogenic 36Cl and 14C in rock varnish; 1991; Article; Journal; Geochimica et Cosmochimica Acta; Phillips, F. M.; Zreda, M. G.; Smith, S. S.; Elmore, D.; Kubik, P. W.; Dorn, R. I.; Roddy, D. J. |
| Citation Start Page: | 2695 |
| Citation Volume: | 55 |
| Citation Year: | 1991 |
| Type: | citation/reference |
| Text: | Age and geomorphic history of Meteor Crater, Arizona, from cosmogenic 36Cl and 14C in rock varnish; 1991; Article; Journal; Geochimica et Cosmochimica Acta; Phillips, F. M.; Zreda, M. G.; Smith, S. S.; Elmore, D.; Kubik, P. W.; Dorn, R. I.; Roddy, D. J. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Tue, 1 Jan 1991 00:00 -0600 |
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