40 Ar/ 39 Ar Age of Cretaceous-Tertiary Boundary Tektites from Haiti
- 14 June 1991
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 252 (5012) , 1539-1542
- https://doi.org/10.1126/science.252.5012.1539
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.Keywords
This publication has 19 references indexed in Scilit:
- Glass from the Cretaceous/Tertiary boundary in HaitiNature, 1991
- An Extraterrestrial ImpactScientific American, 1990
- 40 Ar- 39 Ar Dating of the Manson Impact Structure: A Cretaceous-Tertiary Boundary Crater CandidateScience, 1989
- High precision 40Ar/39Ar dating of Oligocene rhyolites from the Mogollon‐Datil Volcanic Field using a continuous laser systemGeophysical Research Letters, 1988
- Genetic implications of Pb isotopic geochemistry in the Rogaland anorthositic complex (southwest Norway)Chemical Geology, 1986
- Response : Uncertainty of Histologic Classification of Experimental TumorsScience, 1984
- Magnetostratigraphy, biostratigraphy and geochronology of Cretaceous–Tertiary boundary sediments, Red Deer ValleyNature, 1979
- IntroductionGeological Society, London, Special Publications, 1971
- New K-Ar and fission track ages of impact glasses and tektitesEarth and Planetary Science Letters, 1967
- Origin of TektitesNature, 1933