Dasgupta, H.C.; Mishra, Somen (2005) Petrogenesis of Hudupahar-Gitilgarh Metabasic Rocks in Chhotanagpur Granite Gneiss, Eastern India. Journal of the Geological Society of India, 66 (1). 66-80 doi:10.17491/jgsi/2005/660109
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Petrogenesis of Hudupahar-Gitilgarh Metabasic Rocks in Chhotanagpur Granite Gneiss, Eastern India | ||
| Journal | Journal of the Geological Society of India | ||
| Authors | Dasgupta, H.C. | Author | |
| Mishra, Somen | Author | ||
| Year | 2005 (July 1) | Volume | 66 |
| Page(s) | 66-80 | Issue | 1 |
| Publisher | Geological Society of India | Place | Bangaluru, India |
| URL | |||
| DOI | doi:10.17491/jgsi/2005/660109Search in ResearchGate | ||
| Generate Citation Formats | |||
| Classification | Not set | LoC | Not set |
| Mindat Ref. ID | 19409234 | Long-form Identifier | mindat:1:5:19409234:2 |
| GUID | 0 | ||
| Full Reference | Dasgupta, H.C.; Mishra, Somen (2005) Petrogenesis of Hudupahar-Gitilgarh Metabasic Rocks in Chhotanagpur Granite Gneiss, Eastern India. Journal of the Geological Society of India, 66 (1). 66-80 doi:10.17491/jgsi/2005/660109 | ||
| Plain Text | Dasgupta, H.C.; Mishra, Somen (2005) Petrogenesis of Hudupahar-Gitilgarh Metabasic Rocks in Chhotanagpur Granite Gneiss, Eastern India. Journal of the Geological Society of India, 66 (1). 66-80 doi:10.17491/jgsi/2005/660109 | ||
| In | (2005, July) Journal of the Geological Society of India Vol. 66 (1). Geological Society of India | ||
| Abstract/Notes | Abstract Hypersthene- to minor olivine-normative low K-quartz tholeiites occurring in Hudupahar-Gitilgarh area of Chhotanagpur Granite Gneissic Complex appear to have formed at low pressure (<10Kb) conditions Small range and mutually coherent, regular patterns of distribution of the major and trace elements in Harker-type and other variation diagrams and tight clustering of all data points in Pearce Element Ratio plots indicate unaltered and uncontaminated and comagmatic nature of the melt for the (meta)-basic rocks subjected to clinopyroxene, plagioclase and minor olivine fractionation Multielement spidergrams and trace element modelling for a number of compatible-incompatible pairs suggest that these rocks are products of partial melting of depleted mantle which possibly has been metasomatically slightly enriched in some but depleted in other elements prior to melting Approximately ~15% partial melting of the mantle followed by fractional crystallization of upto 20–30% in the melt appears to have been the probable mechanism for the generation of these tholeiites | ||
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