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.
Crustal growth of the Eastern Dharwar Craton: a Neoarchean collisional orogeny?
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Published:December 14, 2020
Abstract
The Eastern Dharwar Craton (EDC) is predominantly made of Neoarchean potassic granitoids with subordinate linear greenstone belts. Available geochemical and isotopic systematics of these granitoids suggest variations in the source and petrogenetic mechanisms. By compiling the available geochemical data, these granitoids can be classified into four groups, namely: TTGs (tonalite–trondhjemite–granodiorite); sanukitoids; biotite and two-mica granites; and hybrid granites. This classification scheme is in line with the global classification of Neoarchean granites, and enables the sources and petrogenetic mechanisms of these variants to be distinguished. Available geochemical, isotopic and geochronological datasets of these granitoids are integrated and the existing tectonic...
- Archean
- Asia
- biotite granite
- crust
- deformation
- Dharwar Craton
- emplacement
- genesis
- geochemistry
- granites
- greenstone belts
- igneous rocks
- India
- Indian Peninsula
- magmas
- magmatism
- metamorphic belts
- metamorphism
- Neoarchean
- orogeny
- petrography
- plate collision
- plate tectonics
- plutonic rocks
- Precambrian
- subduction
- tectonics
- tonalite-trondhjemite-granodiorite magmas
- two-mica granite