40Ar/39Ar ages of some Challis Volcanic Group rocks and the initiation of Tertiary sedimentary basins in southwestern Montana
Bulletin
2132
By: John W. M’Gonigle and G. Brent Dalrymple
Links
- More information: National Geologic Map Database Index Page (html)
- Document: Report (pdf)
- Plate: Plate 1 (7834 pdf)
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Abstract
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | 40Ar/39Ar ages of some Challis Volcanic Group rocks and the initiation of Tertiary sedimentary basins in southwestern Montana |
| Series title | Bulletin |
| Series number | 2132 |
| DOI | 10.3133/b2132 |
| Year Published | 1996 |
| Language | ENGLISH |
| Publisher | U.S. G.P.O., |
| Description | iii, 17 p., 1 plate in pocket, 28 cm. |