| Abstract: | The Calera Limestone, part of the Franciscan Complex of northern California, may have formed in a palaeoenvironment similar to Hess and Shatsky Rises of the present north-west Pacific1. We report here new palaeomagnetic results, palaeontological data and recent plate-motion models that reinforce this assertion. The Calera Limestone may have formed on Farallon Plate plateaus, north of the Pacific-Farallon spreading centre as a counterpart to Hess or Shatsky Rises. In one model2, the plateaus were formed by hotspots close to the Farallon_Pacific ridge axis. On accretion to North America, plateau dissection in the late Cretaceous to Eocene (50-70 Myr) could explain the occurrence of large volumes of pillow basalt and exotic blocks of limestone in the Franciscan Complex. Partial subduction of the plateaus could have contributed to Laramide (70-40 Myr) compressional events3. ?? 1985 Nature Publishing Group. |
| Genre: | Article |
| ProdID: | 70013009 |
| Citation Author: | Tarduno, J. A.; Mcwilliams, M.; Debiche, M. G.; Sliter, W. V.; Blake, M. C. |
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| Citation End Page: | 347 |
| Citation Issue: | 6035 |
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| Citation Language: | English |
| Citation Larger Work Title: | Nature |
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| Citation Number Of Pages: | 3 |
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| Citation Search Results Text: | Franciscan complex calera limestones: Accreted remnants of farallon plate oceanic plateaus; 1985; Article; Journal; Nature; Tarduno, J. A.; Mcwilliams, M.; Debiche, M. G.; Sliter, W. V.; Blake, M. C. |
| Citation Start Page: | 345 |
| Citation Volume: | 317 |
| Citation Year: | 1985 |
| Type: | citation/reference |
| Text: | Franciscan complex calera limestones: Accreted remnants of farallon plate oceanic plateaus; 1985; Article; Journal; Nature; Tarduno, J. A.; Mcwilliams, M.; Debiche, M. G.; Sliter, W. V.; Blake, M. C. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1038/317345a0 |
| Date Other: | Tue, 1 Jan 1985 00:00 -0600 |
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