Age and correlation of the Windermere Group in northeastern Washington
Geological Society of America Bulletin
By: F. K. Miller, E. H. McKee, and R. G. Yates
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Abstract
Greenstone of basaltic composition forms the middle part of the Windermere System in southern British Columbia and the correlative Windermere Group in northeastern Washington. The greenstone, together with the rest of the Windermere in this region, is highly sheared, altered, and metamorphosed, except for a small exposed mass of relatively unaffected rocks near the community of Chewelah, Washington. K-Ar ages on whole rocks and mineral separates from the Chewelah area indicate the greenstone was probably extruded between 827 and 918 m.y. ago.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Age and correlation of the Windermere Group in northeastern Washington |
| Series title | Geological Society of America Bulletin |
| DOI | 10.1130/0016-7606(1973)84<3723:AACOTW>2.0.CO;2 |
| Volume | 84 |
| Issue | 11 |
| Year Published | 1973 |
| Language | English |
| Publisher | Geological Society of America |
| Description | 7 p. |
| First page | 3723 |
| Last page | 3729 |
| Country | United States |
| State | Washington |
| Other Geospatial | Windermere Group |
| Google Analytic Metrics | Metrics page |