| Abstract: | 40Ar/39Ar dating of tektites discovered recently in Cretaceous-Tertiary (K-T) boundary marine sedimentary rocks on Haiti indicates that the K-T boundary and impact event are coeval at 64.5 ?? 0.1 million years ago. Sanidine from a bentonite that lies directly above the K-T boundary in continental, coal-bearing, sedimentary rocks of Montana was also dated and has a 40Ar/39Ar age of 64.6 ?? 0.2 million years ago, which is indistinguishable statistically from the age of the tektites. |
| Genre: | Article |
| ProdID: | 70016604 |
| Citation Author: | Izett, G. A.; Dalrymple, G. B.; Snee, L. W. |
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| Citation End Page: | 1542 |
| Citation Issue: | 5012 |
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| Citation Language: | English |
| Citation Larger Work Title: | Science |
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| Citation Number Of Pages: | 4 |
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| Citation Search Results Text: | 40Ar/39Ar age of Cretaceous-Tertiary boundary tektites from Haiti; 1991; Article; Journal; Science; Izett, G. A.; Dalrymple, G. B.; Snee, L. W. |
| Citation Start Page: | 1539 |
| Citation Volume: | 252 |
| Citation Year: | 1991 |
| Type: | citation/reference |
| Text: | 40Ar/39Ar age of Cretaceous-Tertiary boundary tektites from Haiti; 1991; Article; Journal; Science; Izett, G. A.; Dalrymple, G. B.; Snee, L. W. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Tue, 1 Jan 1991 00:00 -0600 |
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