K-Ar and fission track dating of Darwin Crater Glass

Details K-Ar and fission track dating of Darwin Crater Glass K-Ar and fission track dating of Darwin Crater Glass

Oct 1973

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1973e%26psl..20..204g&link_type=abstract

Earth and Planetary Science Letters, Volume 20, Issue 2, p. 204-210.

Physics

4

Scientific paper

Darwin Glasses from the recently discovered Darwin Crater in Tasmania were dated by the K-Ar and the fission track methods. The ages by both methods agree and yield a combined age of 0.73 +/- 0.04 my for the formation of Darwin Crater and Darwin Glass by an impact. Since an accidental coincidence of this age with the age of Australasian tektites is rather unlikely, we suppose that Darwin Crater is one of many - primary or secondary - impact structures caused by the collision of a meteorite or comet with the earth ~ 0.7 my ago in the region of South East Asia and Australia.

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