Potassium-argon age of Devils Tower, Wyoming
Bassett WA. 1961. Potassium-argon age of Devils Tower, Wyoming. Science. 134(3487):1373
Devils Tower consists of conlumnar phonolite prophyry which contains large phenocrysts of orthoclases. Potassium-argon determinations on the orthoclase indicate an age of 40.5 milion years +/- 4 percent. This is consistent with the geologcially accepted Tertiary age.
- Type
- Journal Article
- Authors
- Bassett, William
- Units
- DETO
- Keywords
- Absolute Age, Dates, Devils Tower, Devils Tower phonolite porphyry, Geology, Igneous Rocks, K Ar, K Ar age, orthoclase, Phonolite porphyry, Wyoming