The Bundelkhand massif represents one of the oldest nuclei of the northern part of the Indian Peninsula, which comprises extensive outcrop of gneisses and granitoids in association with meta-sedimentaries and meta-volcanics of older supracrustal mass. High-grade metamorphic rocks viz. TTG, gneisses and amphibolites were formed during the first episode of metamorphism during 3200Ma and grouped under Older Metamorphic Group (OMG). The low-grade metamorphic rocks such as mafics and ultramafics, meta-sedimentaries and metavolcanosedimentaries have been grouped under Newer Metamorphic Group (NMG), second episode of Metamorphism probably during 3200-2600Ma. These metamorphic rocks are further intruded by the different episodes of granites (2500-2300), quartz reefs (2300-2000 Ma) and mafic dykes (2000-1800 Ma).
Autorius: | M. M. Singh |
Leidėjas: | LAP LAMBERT Academic Publishing |
Išleidimo metai: | 2015 |
Knygos puslapių skaičius: | 252 |
ISBN-10: | 3659334715 |
ISBN-13: | 9783659334719 |
Formatas: | 220 x 150 x 16 mm. Knyga minkštu viršeliu |
Kalba: | Anglų |
Parašykite atsiliepimą apie „Supracrustal Rocks of Bundelkhand Massif, India: Granite, Gneisses and Volcano-metasedimetaries“