Two-dimensional compressional wave velocity structure under San Francisco volcanic field, Arizona, from teleseismic P residual measurements.
Journal of Geophysical Research
By: D.A. Stauber
Links
- The Publications Warehouse does not have links to digital versions of this publication at this time
- Download citation as: RIS | Dublin Core
Abstract
A low compressional-wave velocity region in the midcrust below the San Francisco Mountain stratovolcano, Arizona, has been detected by the teleseismic P residual technique. This region is approx 6km wide, lies between elevations of 9km and 34km below sea level, and has a compressional velocity reduction of 65 with respect to the surrounding rocks. Several mechanisms are found to be quantitatively sufficient to produce such a feature. These include 1) a cool silicic pluton enclosed in a more mafic crust, 2) high temperature (near but below the solidus) in a quartz-bearing rock in the low-velocity region, 3) high density of water-filled cracks having pore pressures nearly equal to lithostatic pressure, and 4) the presence of melt, either in intergranular pores or in crystal-poor dikes.-Author
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Two-dimensional compressional wave velocity structure under San Francisco volcanic field, Arizona, from teleseismic P residual measurements. |
| Series title | Journal of Geophysical Research |
| Volume | 87 |
| Issue | B7 |
| Year Published | 1982 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Geophysical Research |
| First page | 5451 |
| Last page | 5459 |
| Google Analytic Metrics | Metrics page |