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40Ar/39Ar age of the Manson impact structure, Iowa, and correlative impact ejecta in the Crow Creek Member of the Pierre Shale (Upper Cretaceous), South Dakota and Nebraska
Izett, G. A., Cobban, W. A., Obradovich, J. D., Dalrymple, G. B.Volume:
110
Journal:
Geological Society of America Bulletin
DOI:
10.1130/0016-7606(1998)1102.3.co;2
Date:
March, 1998
File:
PDF, 246 KB
1998