40Ar/39Ar age of Cretaceous-Tertiary boundary tektites from Haiti
January 1, 1991
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.
Citation Information
| Publication Year | 1991 |
|---|---|
| Title | 40Ar/39Ar age of Cretaceous-Tertiary boundary tektites from Haiti |
| Authors | G. A. Izett, G. B. Dalrymple, L. W. Snee |
| Publication Type | Article |
| Publication Subtype | Journal Article |
| Series Title | Science |
| Index ID | 70016604 |
| Record Source | USGS Publications Warehouse |