Tectonic history of the north portion of the San Andreas fault system, California, inferred from gravity and magnetic anomalies
Journal of Geophysical Research
By: A. Griscom and R.C. Jachens
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Abstract
Geologic and geophysical data for the San Andreas fault system north of San Francisco suggest that the eastern boundary of the Pacific plate migrated eastward from its presumed original position at the base of the continental slope to its present position along the San Andreas transform fault by means of a series of eastward jumps of the Mendocino triple junction. These eastward jumps total a distance of about 150 km since 29 Ma. Correlation of right-laterally displaced gravity and magnetic anomalies that now have components at San Francisco and on the shelf north of Point Arena indicates that the presently active strand of the San Andreas fault north of the San Francisco peninsula formed recently at about 5 Ma when the triple junction jumped eastward a minimum of 100 km to its present location at the north end of the San Andreas fault. -from Authors
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Tectonic history of the north portion of the San Andreas fault system, California, inferred from gravity and magnetic anomalies |
| Series title | Journal of Geophysical Research |
| Volume | 94 |
| Issue | B3 |
| Year Published | 1989 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Geophysical Research |
| First page | 3089 |
| Last page | 3099 |
| Google Analytic Metrics | Metrics page |