Rare earth element evidence for the petrogenesis of the banded series of the Stillwater Complex, Montana, and its anorthosites
Journal of Petrology
By: P. J. Loferski, R.J. Arculus, and G.K. Czamanske
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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
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Rare earth element evidence for the petrogenesis of the banded series of the Stillwater Complex, Montana, and its anorthosites |
| Series title | Journal of Petrology |
| Volume | 35 |
| Issue | 6 |
| Year Published | 1994 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Petrology |
| First page | 1623 |
| Last page | 1649 |
| Google Analytic Metrics | Metrics page |