Passive seismic study of a magma-dominated rift : the Salton Trough
Abstract/Contents
- Abstract
- In this PhD thesis I study earth's crustal and upper-mantle structure in southern California, focusing on the magmatic structure beneath Salton Trough transtensional rift basin in southernmost California. Seismic data was collected with a temporary array of seismometers deployed across the basin and its margins, and augmented with seismic data recorded on permanent and other temporary seismometer arrays throughout the western U.S.A.. I use ambient-noise tomography to create a 3D shear-velocity model of southern California's crust and upper-mantle. The new 3D model reveals previously unimaged structure beneath the San Andreas Fault, Peninsular Ranges batholith, southern Sierra Nevada batholith and the Salton Trough, with implications on the geologic and tectonic history of the region. I use shear-wave splitting of seismic waves, caused by anisotropic upper-mantle structure beneath the Salton Trough, to show evidence of a sharp rheological boundary in the upper-mantle beneath the Salton Trough region, at the southwest limit of the San Andreas Fault system, and infer the presence of upper-mantle melt-filled inclusions oriented parallel to transform motion on the San Andreas Fault.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2017 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Barak, Shahar |
|---|---|
| Associated with | Stanford University, Department of Geophysics. |
| Primary advisor | Klemperer, Simon |
| Thesis advisor | Klemperer, Simon |
| Thesis advisor | Beroza, Gregory C. (Gregory Christian) |
| Thesis advisor | Sleep, Norman H |
| Advisor | Beroza, Gregory C. (Gregory Christian) |
| Advisor | Sleep, Norman H |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Shahar Barak. |
|---|---|
| Note | Submitted to the Department of Geophysics. |
| Thesis | Thesis (Ph.D.)--Stanford University, 2017. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2017 by Shahar Barak
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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