Paleomagnetic evidence for a Late Cretaceous deformation of the Great Valley Sequence, Sacramento Valley, California
Journal of Research of the U.S. Geological Survey
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Abstract
Paleomagnetic samples from five localities within the Great Valley sequence range in age from Late Jurassic to Late Cretaceous. All samples possess normal polarity, and alternating-field demagnetization experiments show that the remanence was acquired after the sequence was folded. A mean paleomagnetic pole position determined from 17 demagnetized samples is located at 72° N., 181° E., with the radius of the 95-percent circle of confidence equal to 5.4°. This pole position agrees very well with known Cretaceous poles from North America, a fact indicating that the deformation and remagnetization of the sequence must have occurred during the Late Cretaceous.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Paleomagnetic evidence for a Late Cretaceous deformation of the Great Valley Sequence, Sacramento Valley, California |
| Series title | Journal of Research of the U.S. Geological Survey |
| Volume | 6 |
| Issue | 3 |
| Year Published | 1978 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Contributing office(s) | Geology, Minerals, Energy, and Geophysics Science Center |
| Description | 8 p. |
| First page | 383 |
| Last page | 390 |
| Country | United States |
| State | California |
| Other Geospatial | Sacramento Valley |