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40 Ar‐ 39 Ar Dating of the Haughton Impact Structure
Author(s) -
Jessberger Elmar K.
Publication year - 1988
Publication title -
meteoritics
Language(s) - English
Resource type - Journals
eISSN - 1945-5100
pISSN - 0026-1114
DOI - 10.1111/j.1945-5100.1988.tb01285.x
Subject(s) - impact structure , isochron , breccia , geology , geochemistry , gneiss , mineralogy , impact crater , physics , astrobiology , metamorphic rock
— 40 Ar‐ 39 Ar dating of a strongly shocked, vesiculated gneiss clast in a breccia from the Haughton impact structure yields an isochron age of 23.4 ± 1.0 Ma. The sample contains excess 40 Ar.