| Abstract: | A three-dimensional gravity model indicates that the Miocene Columbia River Basalt Group (CRBG) overlies a broad basin filled with sedimentary rocks that reach thicknesses in excess of 5 km; thickest sub-basalt sedimentary rocks are beneath the late Cenozoic Yakima basin. Analysis of residual gravity shows that the Eocene Chiwaukum graben goes not continue beneath the CRBG and that sub-basalt sedimentary rocks are not thrust into the cores of the basalt anticlines in the Yakima fold belt. A major crustal feature, the Olympic-Wallowa lineament, is expressed in the gravity field. -from Author |
| Genre: | Article |
| ProdID: | 70017881 |
| Citation Author: | Saltus, R. W. |
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| Citation End Page: | 1259 |
| Citation Issue: | 9 |
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| Citation Language: | English |
| Citation Larger Work Title: | Geological Society of America Bulletin |
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| Citation Number Of Pages: | 13 |
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| Citation Search Results Text: | Upper-crustal structure beneath the Columbia River Basalt Group, Washington: gravity interpretation controlled by borehole and seismic studies; 1993; Article; Journal; Geological Society of America Bulletin; Saltus, R. W. |
| Citation Start Page: | 1247 |
| Citation Volume: | 105 |
| Citation Year: | 1993 |
| Type: | citation/reference |
| Text: | Upper-crustal structure beneath the Columbia River Basalt Group, Washington: gravity interpretation controlled by borehole and seismic studies; 1993; Article; Journal; Geological Society of America Bulletin; Saltus, R. W. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Fri, 1 Jan 1993 00:00 -0600 |
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