Glauconite from the Precambrian Belt Series, Montana
- 26 April 1963
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 140 (3565) , 390-391
- https://doi.org/10.1126/science.140.3565.390
Abstract
Glauconite from the upper part of the Missoula Group of the Belt Series, Flathead County, Montana, has been dated at 1070 million years by potassium-argon and rubidium-strontium analyses. This is the first glauconite of Precambrian age reported in North America.Keywords
This publication has 5 references indexed in Scilit:
- Geologic Time ScaleScience, 1961
- UTILIZATION OF GLAUCONITE IN ABSOLUTE DATINGAnnals of the New York Academy of Sciences, 1961
- On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon methodGeochimica et Cosmochimica Acta, 1961
- Isotopic composition of lead and Precambrian mineralization of the Coeur d'Alene district, IdahoEconomic Geology, 1960
- URANIUM-LEAD METHOD OF AGE DETERMINATIONGSA Bulletin, 1957