| Abstract: | A new crustal model based on isostatic residual gravity, geologic mapping, well information, and density measurements shows that the high-gradient parts of the residual gravity anomaly can be explained in terms of lithologic variations within the upper 7 km of the crust, consistent with the upper-crustal framework of the area. This conclusion does not rule out the presence of a magma chamber at lower crustal depths; the broad aspects of the gravity anomaly support the presence of low-density partial melting at 15 to 20 km depth, consistent with magnetotelluric soundings and other geophysical measurements. |
| Genre: | Conference Paper |
| ProdID: | 70018004 |
| Citation Author: | Blakely, Richard, J.; Stanley, W. D. |
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| Citation Editor: | Anon |
| Citation End Page: | 233 |
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| Citation Language: | English |
| Citation Larger Work Title: | Transactions - Geothermal Resources Council |
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| Citation Number Of Pages: | 7 |
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| Citation Publisher: | Publ by Geothermal Resources Council |
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| Citation Search Results Text: | Geyser‘s magma chamber, California: constraints from gravity data, density measurements, and well information; 1993; Conference Paper; Transactions - Geothermal Resources Council; Blakely, Richard, J.; Stanley, W. D. |
| Citation Start Page: | 227 |
| Citation Volume: | 17 |
| Citation Year: | 1993 |
| Type: | citation/reference |
| Text: | Geyser‘s magma chamber, California: constraints from gravity data, density measurements, and well information; 1993; Conference Paper; Transactions - Geothermal Resources Council; Blakely, Richard, J.; Stanley, W. D. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Fri, 1 Jan 1993 00:00 -0600 |
| Publisher: | Publ by Geothermal Resources Council |
