Book ChapterDOI
A bimodal large igneous province and the plume debate: The Paleoproterozoic Dongargarh Group, central India
Sarajit Sensarma
- Vol. 430, pp 831-839
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The article was published on 2007-01-01. It has received 14 citations till now. The article focuses on the topics: Large igneous province.read more
Citations
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Journal ArticleDOI
‘Large Igneous Provinces (LIPs)’: Definition, recommended terminology, and a hierarchical classification
TL;DR: In this article, the authors proposed a hierarchical classification of LIPs that is independent of composition, tectonic setting, or emplacement mechanism, and suggested that the term LIP is used in its broadest sense and that it should designate igneous provinces with outcrop areas ≥ 50,000 km 2.
Journal ArticleDOI
Mineralogy and geochemistry of the Mahi River sediments in tectonically active western India: Implications for Deccan large igneous province source, weathering and mobility of elements in a semi-arid climate
TL;DR: In this paper, the authors focused on the texture, mineralogy, and compositions including REE of fine sand/silt deposited by a small to medium-sized river, the Mahi River (about 600 kilometres) in a tectonically active, semi-arid region draining the Deccan Traps in western India, one of the largest LIPs in the world.
Journal ArticleDOI
The Bastar craton, central India: A window to Archean – Paleoproterozoic crustal evolution
M. Santosh,M. Santosh,M. Santosh,Toshiaki Tsunogae,Toshiaki Tsunogae,Cheng-Xue Yang,Yue-Sheng Han,K.R. Hari,M.P. Manu Prasanth,M.P. Manu Prasanth,Sam Uthup +10 more
TL;DR: In this paper, a new tectonic classification of the Bastar craton into the Western Bastar Craton (WBC), EBC, and the intervening Central Bastar Orogen (CBO) is proposed.
Journal ArticleDOI
Evolution of ca. 2.5 Ga Dongargarh volcano-sedimentary Supergroup, Bastar craton, Central India: Constraints from zircon U-Pb geochronology, bulk-rock geochemistry and Hf-Nd isotope systematics
TL;DR: In this article, the authors investigated the evolution of the volcanic sequences in the Dongargarh Supergroup by the subduction of an oceanic spreading ridge beneath the continental lithosphere, presumably in a back-arc or marginal sea basin that has witnessed contemporaneous sedimentation, which led to the development of an Andean-type magmatic arc around ca. 2.5 Ga in the Bastar craton, central India.
Journal ArticleDOI
Zircon evaporation ages and geochemistry of metamorphosed volcanic rocks from the Vinjamuru domain, Krishna Province: evidence for 1.78 Ga convergent tectonics along the southeastern margin of the Eastern Dharwar Craton
TL;DR: In this article, the Vinjamuru Palaeoproterozoic volcanic eruption implies an event of convergent tectonism at the southeastern margin of the Eastern Dharwar Craton at 1.61 Ga.
References
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Journal ArticleDOI
Convection Plumes in the Lower Mantle
TL;DR: The concept of crustal plate motion over mantle hotspots has been advanced to explain the origin of the Hawaiian and other island chains and the origin the Walvis, Iceland-Farroe and other aseismic ridges as discussed by the authors.
Journal ArticleDOI
Large igneous provinces: crustal structure, dimensions, and external consequences
Millard F. Coffin,Olav Eldholm +1 more
TL;DR: In this article, the authors compile all known in situ LIPs younger than 250 Ma and analyze dimensions, crustal structures, ages, and emplacement rates of representatives of the three major LIP categories: Ontong Java and Kerguelen-Broken Ridge oceanic plateaus, North Atlantic volcanic passive margins, and Deccan and Columbia River continental flood basalts Crustal thickness ranges from 20 to 40 km, and the lower crust is characterized by high (70-76 km s?1) compressional wave velocities.
Journal ArticleDOI
Generation of metaluminous A-type granites by low-pressure melting of calc-alkaline granitoids
TL;DR: Melting experiments on two calc-alkaline rocks, a tonalite and a granodiorite, demonstrate that shallow dehydration melting of hornblende- and biotite-bearing granitoids generates metaluminous A-type granitic melts as discussed by the authors.
Journal ArticleDOI
On causal links between flood basalts and continental breakup
TL;DR: In this paper, a mixed scenario of active/passive rifting was proposed to account for these observations, and the authors found that an active component (a plume and resulting flood basalt) is a pre-requisite for the breakup of a major oceanic basin, but rifting must be allowed by plate-boundary forces and is influenced by preexisting heterogeneities in lithospheric structure.
Journal ArticleDOI
The Chon Aike province of Patagonia and related rocks in West Antarctica: A silicic large igneous province
Robert J. Pankhurst,Philip T. Leat,Patricia Sruoga,Carlos W. Rapela,Marcelo J. Marquéz,Bryan C. Storey,Teal R. Riley +6 more
TL;DR: The field occurrence, age, classification and geochemistry of the Mesozoic volcanic rocks of Patagonia and West Antarctica are reviewed, using published and new information in this paper, where a diachronism is recognized between the Early-Middle Jurassic volcanism of eastern Patagonian (Marifil and Chon Aike formations) and the Middle Jurassic-earliest Cretaceous volcanisms of the Andean Cordillera (El Quemado, Ibanez and Tobifera formations).