The Malani volcanics of Gurapratap Singh and Diri belong to a basalt-andesite -daciterhyolite association of Precambrian age. The preponderance of rhyolites over basic and intermediate rocks is a significant feature of the area. The rhyolities are characterised by chemical features, which indicate their A-type affinity. The study rules out their cogeneticity and suggests the crustal involvement in the genesis of Malani rhyolites.
Crustal influences in the petrogenesis of the Malani rhyolites, southwestern Rajasthan: Combined trace element and oxygen isotope constraints
COLTORTI, Massimo;
1996
Abstract
The Malani volcanics of Gurapratap Singh and Diri belong to a basalt-andesite -daciterhyolite association of Precambrian age. The preponderance of rhyolites over basic and intermediate rocks is a significant feature of the area. The rhyolities are characterised by chemical features, which indicate their A-type affinity. The study rules out their cogeneticity and suggests the crustal involvement in the genesis of Malani rhyolites.File in questo prodotto:
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