| Abstract: | The Pacific plate moved northwest relative to North America since 42 Ma. The rapid half rate of Pacific-Farallon spreading allowed the ridge to approach the continent at about 29 Ma. Extinct spreading ridges that occur offshore along 65% of the margin document that fragments of the subducted Farallon slab became captured by the Pacific plate and assumed its motion proper to the actual subduction of the spreading ridge. This plate-capture process can be used to explain much of the post-29 Ma Cordilleran North America extension, strike slip, and the inland jump of oceanic spreading in the Gulf of California. Much of the post-29 Ma continental tectonism is the result of the strong traction imposed on the deep part of the continental crust by the gently inclined slab of subducted oceanic lithosphere as it moved to the northwest relative to the overlying continent. -from Authors |
| Genre: | Article |
| ProdID: | 70018843 |
| Citation Author: | Bohannon, R. G.; Parsons, T. |
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| Citation End Page: | 959 |
| Citation Issue: | 8 |
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| Citation Language: | English |
| Citation Larger Work Title: | Geological Society of America Bulletin |
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| Citation Number Of Pages: | 23 |
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| Citation Search Results Text: | Tectonic implications of post-30 Ma Pacific and North American relative plate motions; 1995; Article; Journal; Geological Society of America Bulletin; Bohannon, R. G.; Parsons, T. |
| Citation Start Page: | 937 |
| Citation Volume: | 107 |
| Citation Year: | 1995 |
| Type: | citation/reference |
| Text: | Tectonic implications of post-30 Ma Pacific and North American relative plate motions; 1995; Article; Journal; Geological Society of America Bulletin; Bohannon, R. G.; Parsons, T. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Sun, 1 Jan 1995 00:00 -0600 |
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