Geochronology and geochemistry of Meso- to Neoarchean magmatic epidote-bearing potassic granites, western Dharwar Craton (Bellur–Nagamangala–Pandavpura corridor), southern India: implications for the successive stages of crustal reworking and cratonization
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Published:December 14, 2020
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CiteCitation
M. Jayananda, Martin Guitreau, T. Tarun Thomas, Hervé Martin, K. R. Aadhiseshan, R. V. Gireesh, Jean-Jacques Peucat, M. Satyanarayanan, 2020. "Geochronology and geochemistry of Meso- to Neoarchean magmatic epidote-bearing potassic granites, western Dharwar Craton (Bellur–Nagamangala–Pandavpura corridor), southern India: implications for the successive stages of crustal reworking and cratonization", Archean Granitoids of India: Windows into Early Earth Tectonics, S. Dey, J.-F. Moyen
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Abstract
We present field and petrographical characteristics, zircon U–Pb ages, Nd isotopes, and major and trace element data for the magmatic epidote-bearing granitic plutons in the Bellur–Nagamangala–Pandavpura corridor, and address successive reworking and cratonization events in the western Dharwar Craton (WDC). U–Pb zircon ages reveal three stages of plutonism including: (i) sparse 3.2 Ga granodiorite plutons intruding the TTG (tonalite–trondhjemite–granodiorite) basement away from the western boundary of the Nagamangala greenstone belt; (ii) 3.0 Ga monzogranite to quartz monzonite plutons adjoining the Nagamangala greenstone belt; and (iii) 2.6 Ga monzogranite plutons in the Pandavpura region. Elemental data of the 3.2 Ga...
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Archean Granitoids of India: Windows into Early Earth Tectonics
CONTAINS OPEN ACCESS

Granitoids form the bulk of the Archean continental crust and preserve key information on early Earth evolution. India hosts five main Archean cratonic blocks (Aravalli, Bundelkhand, Singhbhum, Bastar and Dharwar). This book summarizes the available information on Archean granitoids of Indian cratons. The chapters cover a broad spectrum of themes related to granitoid typology, emplacement mechanism, petrogenesis, phase-equilibria modelling, temporal distribution, tectonic setting, and their roles in fluid evolution, metal delivery and mineralizations. The book presents a broader picture incorporating regional- to cratons-scale comparisons, implications for Archean geodynamic processes, and temporal changes thereof. This synthesis work, integrating modern concepts on granite petrology and crustal evolution, offers an irreplaceable body of reference information for any geologist interested in Archean Indian granitoids.
GeoRef
- absolute age
- Archean
- Asia
- basement
- chemical composition
- cratons
- crust
- Dharwar Craton
- epidote
- epidote group
- granites
- greenstone
- igneous rocks
- India
- Indian Peninsula
- intrusions
- magmas
- magmatism
- mantle
- Mesoarchean
- metamorphic rocks
- Neoarchean
- orthosilicates
- petrography
- plutonic rocks
- plutons
- potassic composition
- Precambrian
- reworking
- schists
- silicates
- sorosilicates
- tectonics
- tonalite-trondhjemite-granodiorite magmas
- U/Pb
- whole rock
- Bellur-Nagamangala-Pandavpura Corridor