Potassium-Argon Age of Devils Tower, Wyoming

Details Potassium-Argon Age of Devils Tower, Wyoming Potassium-Argon Age of Devils Tower, Wyoming

Oct 1961

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1961sci...134.1373b&link_type=abstract

Science, Volume 134, Issue 3487, pp. 1373

Mathematics

Logic

Scientific paper

Devils Tower consists of columnar phonolite porphyry which contains
large phenocrysts of orthoclase. Potassium-argon determinations on the
orthoclase indicate an age of 40.5 million years ± 4 percent.
This is consistent with the geologically accepted Tertiary age.

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