U-Pb ages of single shocked zircons linking distal K/T ejecta to the Chicxulub crater

The impact breccia from Chicxulub contains zircons that are identical in age to Colorado zircons and to some from the Beloc section of Haiti. Study results point to Chicxulub as the only significant Cretaceous/Tertiary impact crater.

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Bibliographic Details
Published in:Nature (London) 1993-12, Vol.366 (6457), p.731-734
Main Authors: Krogh, Thomas E, Kamo, Sandra L, Sharpton, Virgil L, Marin, Luis E, Hildebrands, Alan R
Format: Article
Language:English
Subjects:
Cosmochemistry. Extraterrestrial geology
Cretaceous
Earth sciences
Earth, ocean, space
Exact sciences and technology
Geological time
Meteorites. Tectites. Impactites
Minerals
Radioisotopes
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Description
Summary:The impact breccia from Chicxulub contains zircons that are identical in age to Colorado zircons and to some from the Beloc section of Haiti. Study results point to Chicxulub as the only significant Cretaceous/Tertiary impact crater.
ISSN:0028-0836
1476-4687
DOI:10.1038/366731a0