| Abstract: | Diabasic and gabbroic dikes intruding the lower Paleozoic Trinity Ophiolite in the Lovers Leap section, Klamath Mountains, California, display strong calc-alkalic petrological and geochemical features. These dikes, of Late Jurassic age (149??6Ma by K/Ar), are petrographically and geochemically similar to the contemporaneous calc-alkalic ultramafic magmatism well developed through the Klamath Mountains. They present negative Nb, Zr, and Ti anomalies typical of subduction-related magmatism and probably belong to a volcanic arc on an active continental margin. Values of ??Nd suggest that no old continental crust underlies the Klamath Mountains. -from Authors |
| Genre: | Article |
| ProdID: | 70015854 |
| Citation Author: | Brouxel, M.; Lapierre, H.; Zimmermann, J. -L. |
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| Citation End Page: | 276 |
| Citation Issue: | 3 |
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| Citation Language: | English |
| Citation Larger Work Title: | Geology |
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| Citation Number Of Pages: | 4 |
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| Citation Search Results Text: | Upper Jurassic mafic magmatic rocks of the eastern Klamath Mountains, northern California: remnant of a volcanic arc built on young continental crust; 1989; Article; Journal; Geology; Brouxel, M.; Lapierre, H.; Zimmermann, J. -L. |
| Citation Start Page: | 273 |
| Citation Volume: | 17 |
| Citation Year: | 1989 |
| Type: | citation/reference |
| Text: | Upper Jurassic mafic magmatic rocks of the eastern Klamath Mountains, northern California: remnant of a volcanic arc built on young continental crust; 1989; Article; Journal; Geology; Brouxel, M.; Lapierre, H.; Zimmermann, J. -L. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Sun, 1 Jan 1989 00:00 -0600 |
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