| Reference Type | Journal (article/letter/editorial) |
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| Title | Petrofabrics of laminated gabbros from the Centre 3 igneous complex, Ardnamurchan, Scotland |
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| Journal | Mineralogical Magazine | ISSN | 0026-461X |
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| Authors | Fortey, N. J. | Author |
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| Year | 1980 (December) | Volume | 43 |
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| Issue | 332 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_43/43-332-989.pdf+ |
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| DOI | doi:10.1180/minmag.1980.043.332.06Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 3187 | Long-form Identifier | mindat:1:5:3187:9 |
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| GUID | 0 |
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| Full Reference | Fortey, N. J. (1980) Petrofabrics of laminated gabbros from the Centre 3 igneous complex, Ardnamurchan, Scotland. Mineralogical Magazine, 43 (332) 989-994 doi:10.1180/minmag.1980.043.332.06 |
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| Plain Text | Fortey, N. J. (1980) Petrofabrics of laminated gabbros from the Centre 3 igneous complex, Ardnamurchan, Scotland. Mineralogical Magazine, 43 (332) 989-994 doi:10.1180/minmag.1980.043.332.06 |
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| In | (1980, December) Mineralogical Magazine Vol. 43 (332) Mineralogical Society |
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| Abstract/Notes | SummaryPetrofabric analysis of five specimens of laminated gabbro from the Centre 3 igneous complex, Ardnamurchan, was carried out by measuring orientations of grains of plagioclase, olivine, and augite with a Universal-stage. Linear alignments of primary precipitate mineral grains within the laminar fabrics were revealed by plots of data for coexisting plagioclase and olivine or augite. The plagioclase grains involved have tabular forms elongated parallel to their a-axes (rather than their c-axes). The olivine grains have flattened ovoid forms and the augite grains have sub-ophitic forms developed about prismatic primocrysts. In all specimens plagioclase displayed alignment of long grain-axes directed approximately down the dip of the lamination, save for one case in which a weak oblique alignment was observed. These lineations were reproduced by accompanying olivine and augite. The alignments are tentatively ascribed to flowage of a viscous boundary zone to the magma body in which crystal growth was taking place. |
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