Further paleomagnetic results for the San Juan volcanic field of southern Colorado
Earth and Planetary Science Letters
By: M. E. Beck Jr., S.D. Sheriff, J. F. Diehl, E.A. Hailwood, and P. W. Lipman
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Abstract
Combining paleomagnetic data for 17 new sites from the northwest portion of the (Oligocene) San Juan volcanic field of southern Colorado with data for 29 sites previously published yields a paleomagnetic pole at 85°N, 114°E (with a 95% confidence circle of 7.5° radius). A further combination of the San Juan data with the results of other studies on rocks of Oligocene age from tectonically stable parts of North America gives a mid-Tertiary reference pole located at 81°N, 132.5°E, with a confidence circle of approximately 4°. Mid-Tertiary paleomagnetic poles for the western edge of the continent diverge markedly from this reference pole.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Further paleomagnetic results for the San Juan volcanic field of southern Colorado |
| Series title | Earth and Planetary Science Letters |
| DOI | 10.1016/0012-821X(77)90153-4 |
| Volume | 37 |
| Issue | 1 |
| Year Published | 1977 |
| Language | English |
| Publisher | Elsevier |
| Description | 7 p. |
| First page | 124 |
| Last page | 130 |
| Country | United States |
| State | Colorado |
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