Radiometric dating of intrusive rocks in the Cottonwood area, Utah
Links
- Document: Report (26.1 MB pdf)
- Download citation as: RIS | Dublin Core
Abstract
Recently completed fission-track and K-Ar dating of zircon, sphene, apatite, muscovite, biotite, and hornblende indicate that the Clayton Peak stock was intruded 37-41 m.y. ago, the Alta stock about 32-33 m.y. ago, and the Little Cottonwood stock between 24 and 31 m.y. ago. Pb-a ages on zircon, though showing the same sequence, are about twice as great and are inferred to represent a partial
mixing of inherited Precambrian zircons. Acceptance of a middle Tertiary age for the Little Cottonwood stock requires revision of earlier
interpretations that it could be as old as Late Cretaceous. K-Ar dates also indicate that the Keetley Volcanics are 32 to 35 m.y. old, and a
single date of 37.3 m.y. was obtained on the Traverse Volcanics, suggesting that they are more closely related to volcanic activity in the
adjoining Oquirrh Mountains.
Suggested Citation
Crittenden, M.D., Stuckless, J., Kistler, R.W., and Stern, T.W., 1973, Radiometric dating of intrusive rocks in the Cottonwood area, Utah: Journal of Research of the U.S. Geological Survey, v. 1, no. 2, p. 173-178.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Radiometric dating of intrusive rocks in the Cottonwood area, Utah |
| Series title | Journal of Research of the U.S. Geological Survey |
| Volume | 1 |
| Issue | 2 |
| Year Published | 1973 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Description | 6 p. |
| First page | 173 |
| Last page | 178 |
| Country | United States of America |
| State | Utah |
| Other Geospatial | Litte Cottonwood Stock |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |