| Abstract: | Strontium and neodymium isotopic data for rocks from the voluminous 90-million-year-old Lamarck intrusive suite in the Sierra Nevada batholith, California, show little variation across a compositional range from gabbro to granite. Data for three different gabbro intrusions within the suite are identical within analytical error and are consistent with derivation from an enriched mantle source. Recognition of local involvement of enriched mantle during generation of the Sierran batholith modifies estimates of crustal growth rates in the United States. These data indicate that parts of the Sierra Nevada batholith may consist almost entirely of juvenile crust added during Cretaceous magmatism. |
| Genre: | Article |
| ProdID: | 70016770 |
| Citation Author: | Coleman, D. S.; Frost, T. P.; Glazner, A. F. |
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| Citation End Page: | 1926 |
| Citation Issue: | 5090 |
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| Citation Language: | English |
| Citation Larger Work Title: | Science |
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| Citation Number Of Pages: | 3 |
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| Citation Search Results Text: | Evidence from the lamarck granodiorite for rapid late cretaceous crust formation in California; 1992; Article; Journal; Science; Coleman, D. S.; Frost, T. P.; Glazner, A. F. |
| Citation Start Page: | 1924 |
| Citation Volume: | 258 |
| Citation Year: | 1992 |
| Type: | citation/reference |
| Text: | Evidence from the lamarck granodiorite for rapid late cretaceous crust formation in California; 1992; Article; Journal; Science; Coleman, D. S.; Frost, T. P.; Glazner, A. F. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Wed, 1 Jan 1992 00:00 -0600 |
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