2009
DOI: 10.1007/s12594-009-0006-z
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Precambrian mafic magmatism in the Western Dharwar Craton, southern India

Abstract: Mafic rocks of Western Dharwar Craton (WDC) belong to two greenstone cycles of Sargur Group (3.1-3.3 Ga) and Dharwar Supergroup (2.6-2.8 Ga), belonging to different depositional environments. Proterozoic mafic dyke swarms (2.4, 2.0-2.2 and 1.6 Ga) constitute the third important cycle. Mafic rocks of Sargur Group mainly constitute a komatiitic-tholeiite suite, closely associated with layered basic-ultrabasic complexes. They form linear ultramaficmafic belts, and scattered enclaves associated with orthoquartzite… Show more

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Cited by 48 publications
(21 citation statements)
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“…There is a small intrusive granitic body/gneissic granites which are exposed on the surface towards the end of profile 1. The presence of dyke, fault and another lineament is clearly seen in both the graphs suggest that these structures have extended to the north [7][8][9][10][11][12][13][14].…”
Section: Resultsmentioning
confidence: 99%
“…There is a small intrusive granitic body/gneissic granites which are exposed on the surface towards the end of profile 1. The presence of dyke, fault and another lineament is clearly seen in both the graphs suggest that these structures have extended to the north [7][8][9][10][11][12][13][14].…”
Section: Resultsmentioning
confidence: 99%
“…These multi-dimensional diagrams have been positively evaluated and used by the original authors as well as several workers (e.g., Rajesh, 2007;Sheth, 2008;Aparicio and García, 2009;Polat et al, 2009aPolat et al, , 2009bPolat et al, , 2011Ramakrishnan, 2009;Verma, 2009Verma, , 2010Verma, , 2012bBailie et al, 2010Bailie et al, , 2012Slovenec et al, 2010;Wang et al, 2010;Zhang et al, 2010;Pandarinath and Verma, 2013;. Importantly, the proposal of these newer diagrams Agrawal et al, 2008;Verma and Agrawal, 2011) and their use fully complies with the statistical requirements for handling compositional data (Aitchison, 1986;Agrawal and Verma, 2007;Verma, 2012a).…”
Section: Application Of Multi-dimensional Discrimination Diagramsmentioning
confidence: 95%
“…The Sargur Group rocks of WDC predominantly occur as linear ultramafic–mafic belts containing subordinate clastic sediments and BIF (e.g., Nuggihalli, Nagamangala, Jaychamrajoura Holenarsipur, Krishnarajpet, Banasandra‐Mayasandra, Kalyadi, Banavara, and Hadanur) and as scattered ultramafic–mafic enclaves associated with quartzite‐carbonate‐pelite‐BIF assemblage (e.g., Sargur, Karighatta, Konkanhundi, Kadakola, and Sindhuvalli) throughout the TTG gneissic terrain in the southern part of the WDC (Figure ). Zircon U–Pb, SHRIMP U–Pb, Sm–Nd, and Rb–Sr geochronological studies yield an age range of 3,100–3,300 Ma for both variants of lithological assemblages of Sargur Group (Ramakrishnan, , and references therein). The Sargur Group volcanic sequences in the WDC comprise ultramafic komatiite and tholeiitic rocks with subordinate felsic lava flows, whereas the Dharwar Supergroup volcanics contain abundant tholeiitic to felsic volcanic with subordinate basaltic komatiites (Jayananda et al, ; Tushipokla & Jayananda, ).…”
Section: Regional Geologymentioning
confidence: 99%