Dasgupta, Somnath, Sengupta, Pulak, Mondal, A., Fukuoka, M. (1993) Mineral chemistry and reaction textures in metabasites from the Eastern Ghats belt, India and their implications. Mineralogical Magazine, 57 (386) 113-120 doi:10.1180/minmag.1993.057.386.11
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Mineral chemistry and reaction textures in metabasites from the Eastern Ghats belt, India and their implications | ||
| Journal | Mineralogical Magazine | ISSN | 0026-461X |
| Authors | Dasgupta, Somnath | Author | |
| Sengupta, Pulak | Author | ||
| Mondal, A. | Author | ||
| Fukuoka, M. | Author | ||
| Year | 1993 (March) | Volume | 57 |
| Issue | 386 | ||
| Publisher | Mineralogical Society | ||
| Download URL | https://rruff.info/doclib/MinMag/Volume_57/57-386-113.pdf+ | ||
| DOI | doi:10.1180/minmag.1993.057.386.11Search in ResearchGate | ||
| Generate Citation Formats | |||
| Mindat Ref. ID | 1893 | Long-form Identifier | mindat:1:5:1893:1 |
| GUID | 0 | ||
| Full Reference | Dasgupta, Somnath, Sengupta, Pulak, Mondal, A., Fukuoka, M. (1993) Mineral chemistry and reaction textures in metabasites from the Eastern Ghats belt, India and their implications. Mineralogical Magazine, 57 (386) 113-120 doi:10.1180/minmag.1993.057.386.11 | ||
| Plain Text | Dasgupta, Somnath, Sengupta, Pulak, Mondal, A., Fukuoka, M. (1993) Mineral chemistry and reaction textures in metabasites from the Eastern Ghats belt, India and their implications. Mineralogical Magazine, 57 (386) 113-120 doi:10.1180/minmag.1993.057.386.11 | ||
| In | (1993, March) Mineralogical Magazine Vol. 57 (386) Mineralogical Society | ||
| Abstract/Notes | AbstractThree types of mafic granulites, namely two pyroxene-plagioclase granutite (MG), two pyroxeneplagioclase-garnet granulite (GMG) and spinel-olivine-plagioclase-two pyroxene granulite (SMG) are exposed at Sunkarimetta, Eastern Ghats belt, India. The marie granulites exhibit a foliation concordant with that in associated granulite facies quartzofeldspathic gneisses. Textural characteristics and mineral chemical data suggest the following mineral reactions: olivine + plagioclase = spinel + orthopyroxene + clinopyroxene (SMG), orthopyroxene + plagioclase = garnet + quartz (GMG), clinopyroxene + plagioclase = garnet + quartz (GMG) and plagioclase + hemoilmenite + quartz = garnet + ilmenite + 02 (GMG). Geothermobarometry indicates maximum P-T conditions of metamorphism at c. 8.5 kbar, 950°C The marie granulites later suffered nearly isobaric cooling to c. 7.5 kbar, 750°C Bulk compositional characteristics suggest that SMG is of cumulate origin. The protoliths of the mafic granulites, emplaced at c. 32 km depth, are probably responsible for thermal perturbation causing granulite facies metamorphism of the enclosing rocks. | ||
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