Chapter 23 A brief synthesis of Indian Precambrian basins: classification and genesis of basin-fills

摘要: Abstract The geology, inferred evolution and classification according to widely accepted schemes of 22 basins from the Indian Precambrian record on Arravali–Bundelkhand, Singhbhum, Bastar Dharwar cratons are discussed in this volume. Although their is biased owing all depositories having continental lithospheric substrates, most reflect divergent plate motion thus stretching cooling. Convergent concomitant flexure loading postulated for Kurnool Basin Eastern Craton supracrustals. Transcurrent interpreted Bhima Kaladgi–Badami basins. Cuddapah suggests a complex polyhistory influenced by both mantle circulation/dynamic topography loading-related lithosphere. Mantle circulation dynamic may have played role Dhalbhum Dalma–Chandil Examination possible time trends indicates that pre- c. 2.0 Ga were mostly rifts, followed some intracratonic lesser rift-sag back-arc basins; post- exhibit much larger range basin types. While Memoir offers broad sample application plate-tectonic principles large shield, it also underscores Phanerozoic-style tectonics histories identified within sedimentary rock record. Analogously, case studies book support essential similarity between features observed India norms describe Phanerozoic successions terms sequence stratigraphic architecture. basin-fill shows types sequence, systems tract surface known occur successions. Differences architecture can be ascribed variable rates intensities controls accommodation sediment supply, changes inherent hydrosphere–atmosphere system related physical processes, biosphere associated biogenic processes.