Glauconite from the precambrian belt series, Montana
January 1, 1963
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.
Citation Information
| Publication Year | 1963 |
|---|---|
| Title | Glauconite from the precambrian belt series, Montana |
| Authors | R. A. Gulbrandsen, S. S. Goldich, H.H. Thomas |
| Publication Type | Article |
| Publication Subtype | Journal Article |
| Series Title | Science |
| Index ID | 70010685 |
| Record Source | USGS Publications Warehouse |