The Proterozoic aeon involved at least three major continental readjustments. India and Antarctica appear in most models of supercontinent reconstructions, but their relative position has been the subject of debate. High-resolution petrological and geochronological data, especially from the Proterozoic mobile belts, provide the principal means of resolving this issue. The ice-covered nature of Antarctica allows only limited access to the rocks, and then only in coastal tracts, so detailed studies in more accessible Proterozoic terrains in India assume added significance.
Crustal Evolution of India and Antarctica, a follow-up to the XII International Symposium on Antarctic Earth Science, Goa (a SCAR symposium), provides new data from selected locations in east Antarctica (Enderby Land and Dronning Maud Land) and from India, including the Eastern Ghats Mobile Belt (EGMB), Chota Nagpur Gneissic Complex, the Khasi Hills and the Aravalli–Delhi Mobile Belt. The presented geochronological data, constrained by petrological studies, are expected to provide new insights, especially into the EGMB–east Antarctica connection and the rate of continental readjustments in the post-Rodinia break-up.
- Pant, N. C. & Dasgupta, S. An introduction to the crustal evolution of India and Antarctica: the supercontinent connection
Antarctica
- Mikhalsky, E., Krylov, D., Rodionov, N., Presnyakov, S., Skublov, S. & Myasnikov, O. Refined geological history of the polyphase plutonometamorphic complex in the Thala Hills area (Enderby Land, East Antarctica) from zircon SHRIMP dating and implications for Neoproterozoic amalgamation of Gondwanaland
- Roy, S. K., Pant, N. C., Kundu, A., Dharwadkar, A., Kumar, P. K., Joshi, S., Raghuram, Sadiq, M. & Pandey, M. Geological studies in the Baalsrudfjellet nunatak between the Schirmacher Oasis and the Wohlthat Mountains to establish the continuation of the East African Orogen (EAO) in central Dronning Maud Land, East Antarctica
- Moabi, N. G., Grantham, G. H., Roberts, J. & le Roux, P. The geology and geochemistry of the Straumsnutane Formation, Straumsnutane, western Dronning Maud Land, Antarctica and its tectonic setting on the western margin of the Kalahari Craton: additional evidence linking it to the Umkondo Large Igneous Province
India
Eastern Ghats Mobile Belt
- Dasgupta, S., Bose, S., Bhowmik, S. K. & Sengupta, P. The Eastern Ghats Belt, India, in the context of supercontinent assembly
- Chatterjee, A., Das, K., Bose, S., Ganguly, P. & Hidaka, H. Zircon U–Pb SHRIMP and monazite EPMA U–Th–total Pb geochronology of granulites of the western boundary, Eastern Ghats Belt, India: a new possibility for Neoproterozoic exhumation history
- Das, E., Karmakar, S., Dey, A., Karmakar, S. & Sengupta, P. Reaction textures, pressure–temperature paths and chemical dates of monazite from a new suite of sapphirine–spinel granulites from parts of the Eastern Ghats Province, India: insights into the final amalgamation of India and East Antarctica during the formation of Rodinia
- Sawant, A. D., Gupta, S., Clark, C. & Misra, S. The Rauer–Rengali connection in the Indo-Antarctica amalgam: evidence from structure, metamorphism and geochronology
Chotanagpur Granite Gneiss Craton
- Mukherjee, S., Dey, A., Sanyal, S., Ibanez-Mejia, M., Dutta, U. & Sengupta, P. Petrology and U–Pb geochronology of zircon in a suite of charnockitic gneisses from parts of the Chotanagpur Granite Gneiss Complex (CGGC): evidence for the reworking of a Mesoproterozoic basement during the formation of the Rodinia supercontinent
- Saikia, A., Gogoi, B., Kaulina, T., Lialina, L., Bayanova, T. & Ahmad, M. Geochemical and U–Pb zircon age characterization of granites of the Bathani Volcano Sedimentary sequence, Chotanagpur Granite Gneiss Complex, eastern India: vestiges of the Nuna supercontinent in the Central Indian Tectonic Zone
- Kumar, S., Pieru, T., Rino, V. & Hayasaka, Y. Geochemistry and U–Pb SHRIMP zircon geochronology of microgranular enclaves and host granitoids from the South Khasi Hills of the Meghalaya Plateau, NE India: evidence of synchronous mafic–felsic magma mixing–fractionation and diffusion in a post-collision tectonic environment during the Pan-African orogenic cycle
Western Indian Craton
- Bose, S., Seth, P. & Dasgupta, N. Meso-Neoproterozoic mid-crustal metamorphic record from the Ajmer–Shrinagar section, Rajasthan, India and its implication to the assembly of the Greater Indian Landmass during the Grenvillian-age orogenesis
- Arora, D., Pant, N. C., Fareeduddin, Sharma, S., Raghuram & Sadiq, M. Inferring a Neoproterozoic orogeny preceding the Rodinia break-up in the Sirohi Group, NW India
India and Antarctica
- Meert, J. G., Pandit, M. K., Pivarunas, A., Katusin, K. & Sinha, A. K. India and Antarctica in the Precambrian: a brief analysis
Index