Bell, Brian R., Williamson, Ian T. (1994) Picritic basalts from the Palaeocene lava field of west-central Skye, Scotland: evidence for parental magma compositions. Mineralogical Magazine, 58 (392) 347-356 doi:10.1180/minmag.1994.058.392.01
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Picritic basalts from the Palaeocene lava field of west-central Skye, Scotland: evidence for parental magma compositions | ||
| Journal | Mineralogical Magazine | ISSN | 0026-461X |
| Authors | Bell, Brian R. | Author | |
| Williamson, Ian T. | Author | ||
| Year | 1994 (September) | Volume | 58 |
| Issue | 392 | ||
| Publisher | Mineralogical Society | ||
| Download URL | https://rruff.info/doclib/MinMag/Volume_58/58-392-347.pdf+ | ||
| DOI | doi:10.1180/minmag.1994.058.392.01Search in ResearchGate | ||
| Generate Citation Formats | |||
| Mindat Ref. ID | 2044 | Long-form Identifier | mindat:1:5:2044:6 |
| GUID | 0 | ||
| Full Reference | Bell, Brian R., Williamson, Ian T. (1994) Picritic basalts from the Palaeocene lava field of west-central Skye, Scotland: evidence for parental magma compositions. Mineralogical Magazine, 58 (392) 347-356 doi:10.1180/minmag.1994.058.392.01 | ||
| Plain Text | Bell, Brian R., Williamson, Ian T. (1994) Picritic basalts from the Palaeocene lava field of west-central Skye, Scotland: evidence for parental magma compositions. Mineralogical Magazine, 58 (392) 347-356 doi:10.1180/minmag.1994.058.392.01 | ||
| In | (1994, September) Mineralogical Magazine Vol. 58 (392) Mineralogical Society | ||
| Abstract/Notes | AbstractMineral chemistry and whole-rock compositional data are reported for two lavas of picritic basalt from the Palaeocene lava field of west-central Skye, Scotland. Whole-rock compositions for both flows plot on Thompson's (1982) 9 kbar cotectic for olivine + plagioclase + clinopyroxene + liquid. Both flows contain highly forsteritic olivine phenocrysts (c. Fo89), which enclose early-precipitated crystals of chrome-spinel (Al2O3: c. 25 wt.%; Cr2O3: c. 36 wt.%; FeO + Fe2O3: c. 20 wt.%; MgO: c. 15 wt.%). The olivine compositions indicate equilibrium with picritic basalt magma compositions, as represented by the whole-rock compositions of both lavas. A high-pressure origin for the chrome-spinels is suspected on the basis of their textural association and aluminous composition. Compositional comparisons between the whole-rock and mineral chemistry characteristics of both flows and a picritic basalt chill facies of the temporally- and spatially-associated Rum Igneous Complex suggests that similar parental magmas were involved. | ||
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