| Reference Type | Journal (article/letter/editorial) |
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| Title | Silicate mineralogy of the Behelvie cumulates, N E Scotland |
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| Journal | Mineralogical Magazine | ISSN | 0026-461X |
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| Authors | Wadsworth, W. J. | Author |
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| Year | 1991 (March) | Volume | 55 |
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| Issue | 378 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_55/55-378-113.pdf+ |
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| DOI | doi:10.1180/minmag.1991.055.378.09Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 1697 | Long-form Identifier | mindat:1:5:1697:5 |
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| GUID | 0 |
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| Full Reference | Wadsworth, W. J. (1991) Silicate mineralogy of the Behelvie cumulates, N E Scotland. Mineralogical Magazine, 55 (378) 113-119 doi:10.1180/minmag.1991.055.378.09 |
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| Plain Text | Wadsworth, W. J. (1991) Silicate mineralogy of the Behelvie cumulates, N E Scotland. Mineralogical Magazine, 55 (378) 113-119 doi:10.1180/minmag.1991.055.378.09 |
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| In | (1991, March) Mineralogical Magazine Vol. 55 (378) Mineralogical Society |
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| Abstract/Notes | AbstractUltramafic, troctolitic and gabbroic rocks at the northern end of the Belhelvie layered intrusion display progressive cryptic variation over a stratigraphic thickness of approximately 800 m in steeply-dipping cumulates, which young from W to E. This variation is shown by olivine (Fo87−77), orthopyroxene (En87−79), clinopyroxene (Ca45Mg48Fe7 to Ca44.5Mg45.5Fe10) and plagioclase (An81−75). The Belhelvie succession is believed to be equivalent to the poorly-exposed and structurally complex Insch Lower Zone. A laterally impersistent hypersthene-gabbro unit within the main sequence is re-interpreted as a downfaulted block of slightly more evolved cumulates. A repeat sequence of peridotites, troctolites and gabbros on the eastern side of the intrusion, and separated from the underlying main succession by a thin septum of country rock, is believed to represent a fresh influx of magma. |
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