Seismic evidence for a lower-crustal detachment beneath San Francisco Bay, California
Science
Links
- More information: Publisher Index Page (via DOI)
- Download citation as: RIS | Dublin Core
Abstract
Results from the San Francisco Bay area seismic imaging experiment (BASIX) reveal the presence of a prominent lower crustal reflector at a depth of ∼15 kilometers beneath San Francisco and San Pablo bays. Velocity analyses indicate that this reflector marks the base of Franciscan assemblage rocks and the top of a mafic lower crust. Because this compositional contrast would imply a strong rheological contrast, this interface may correspond to a lower crustal detachment surface. If so, it may represent a subhorizontal segment of the North America and Pacific plate boundary proposed by earlier thermo-mechanical and geological models.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Seismic evidence for a lower-crustal detachment beneath San Francisco Bay, California |
| Series title | Science |
| DOI | 10.1126/science.265.5177.1436 |
| Volume | 265 |
| Issue | 5177 |
| Year Published | 1994 |
| Language | English |
| Publisher | American Association for the Advancement of Science |
| Description | 4 p. |
| First page | 1436 |
| Last page | 1439 |
| Country | United States |
| State | California |
| City | San Francisco |
| Other Geospatial | San Francisco Bay |