On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method
Autor: | R. Kistler, J. Obradovich, G.H. Curtis, J.F. Evernden |
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Rok vydání: | 1961 |
Předmět: | |
Zdroj: | Geochimica et Cosmochimica Acta. 23:78-99 |
ISSN: | 0016-7037 |
DOI: | 10.1016/0016-7037(61)90089-8 |
Popis: | Potassium-argon dates of stratigraphically known biotite-bearing tuffs, lava flows and intrusions when used as controls show that illite and glauconite samples selected carefully with regard to geologic history and prepared properly are suitable for obtaining dates almost as accurate as those from igneous biotite. A tentative time-scale is constructed for the Tertiary epochs. |
Databáze: | OpenAIRE |
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