| Abstract: | A rare earth element (REE) study was made by isotope-dilution mass spectrometry of plagioclase separates from a variety of cumulates stratigraphically spanning the Banded series of the Stillwater Complex, Montana. Evaluation of parent liquid REE patterns, calculated on the basis of published plagioclase-liquid partition coefficients, shows that the range of REE ratios is too large to be attributable to fractionation of a single magma type. At least two different parental melts were present throughout the Banded series. This finding supports hypotheses of previous workers that the Stillwater Complex formed from two different parent magma types, designated the anorthosite- or A-type liquid and the ultramafic- or U-type liquid. -from Authors |
| Genre: | Article |
| ProdID: | 70017531 |
| Citation Author: | Loferski, P. J.; Arculus, R. J.; Czamanske, G. K. |
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| Citation End Page: | 1649 |
| Citation Issue: | 6 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Petrology |
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| Citation Number Of Pages: | 27 |
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| Citation Search Results Text: | Rare earth element evidence for the petrogenesis of the banded series of the Stillwater Complex, Montana, and its anorthosites; 1994; Article; Journal; Journal of Petrology; Loferski, P. J.; Arculus, R. J.; Czamanske, G. K. |
| Citation Start Page: | 1623 |
| Citation Volume: | 35 |
| Citation Year: | 1994 |
| Type: | citation/reference |
| Text: | Rare earth element evidence for the petrogenesis of the banded series of the Stillwater Complex, Montana, and its anorthosites; 1994; Article; Journal; Journal of Petrology; Loferski, P. J.; Arculus, R. J.; Czamanske, G. K. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
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