| Abstract: | Pleistocene basalt of the Mount Edgecumbe volcanic field (MEF) is subdivided into a plagioclase type and an olivine type. Th/La ratios of plagioclase basalt are similar to those of mid-ocean-ridge basalt (MORB), whereas those of olivine basalt are of continental affinity. Rare earth element (REE) contents of the olivine basalt, which resemble those of transitional MORB, are modelled by 10-15% partial melting of fertile spinel-plagioclase lherzolite followed by removal of 8-13% olivine. It is concluded that olivine basalt originated in subcontinental spinel lherzolite and that plagioclase basalt may have originated in suboceanic lithosphere of the Pacific plate. -from Authors |
| Genre: | Article |
| ProdID: | 70017502 |
| Citation Author: | Riehle, J. R.; Budahn, J. R.; Lanphere, M. A.; Brew, D. A. |
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| Citation End Page: | 864 |
| Citation Issue: | 5 |
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| Citation Language: | English |
| Citation Larger Work Title: | Canadian Journal of Earth Sciences |
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| Citation Number Of Pages: | 13 |
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| Citation Search Results Text: | Rare earth element contents and multiple mantle sources of the transform-related Mount Edgecumbe basalts, southeastern Alaska; 1994; Article; Journal; Canadian Journal of Earth Sciences; Riehle, J. R.; Budahn, J. R.; Lanphere, M. A.; Brew, D. A. |
| Citation Start Page: | 852 |
| Citation Volume: | 31 |
| Citation Year: | 1994 |
| Type: | citation/reference |
| Text: | Rare earth element contents and multiple mantle sources of the transform-related Mount Edgecumbe basalts, southeastern Alaska; 1994; Article; Journal; Canadian Journal of Earth Sciences; Riehle, J. R.; Budahn, J. R.; Lanphere, M. A.; Brew, D. A. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
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