Search Results - "Basu, Asish R."

Lithium isotope fractionation in the Ganges–Brahmaputra floodplain and implications for groundwater impact on seawater isotopic composition by Bagard, Marie-Laure, West, A. Joshua, Newman, Karla, Basu, Asish R.

“…Lithium isotopes are a promising proxy for reconstructing past weathering processes, but unraveling the seawater record requires a comprehensive understanding…”
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Elemental mobility in subduction metamorphism: insight from metamorphic rocks of the Franciscan Complex and the Feather River ultramafic belt, California by Ghatak, Arundhuti, Basu, Asish R., Wakabayashi, John

“…The degree of element mobility in subduction metamorphism has generated much debate; some workers advocate considerable mobility during metamorphism, whereas…”
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Isotopic and trace element geochemistry of alkalic–mafic–ultramafic–carbonatitic complexes and flood basalts in NE India: Origin in a heterogeneous Kerguelen plume by Ghatak, Arundhuti, Basu, Asish R.

“…The Archean East Indian cratonic margin was affected by the Kerguelen plume (KP) ∼117Ma, causing flood-basalt eruptions of the Rajmahal–Bengal–Sylhet Traps…”
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Evidence of majoritic garnet from the mantle transition zone in the Alpe Arami garnet peridotite by Das, Souvik, Basu, Asish R.

“…Ultra-high-pressure (UHP) peridotites found along collisional zones record rare information from deep within the Earth. However, the estimation of depth of…”
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Vestiges of the Kerguelen plume in the Sylhet Traps, northeastern India by Ghatak, Arundhuti, Basu, Asish R.

“…The 117 Ma Sylhet Traps, exposed on the southern edge of the Shillong Plateau in northeastern India, are separated from the Rajmahal Traps ~ 550 km to the west…”
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Large Groundwater Strontium Flux to the Oceans from the Bengal Basin and the Marine Strontium Isotope Record by Basu, Asish R., Jacobsen, Stein B., Poreda, Robert J., Dowling, Carolyn B., Aggarwal, Pradeep K.

“…Strontium concentration and isotopic data for subsurface flowing groundwaters of the Ganges-Brahmaputra (G-B) delta in the Bengal Basin demonstrate that this…”
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Synchrony and Causal Relations Between Permian-Triassic Boundary Crises and Siberian Flood Volcanism by Renne, Paul R., Zichao, Zhang, Richards, Mark A., Black, Michael T., Basu, Asis R.

“…The Permian-Triassic boundary records the most severe mass extinctions in Earth's history. Siberian flood volcanism, the most profuse known such subaerial…”
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Geochemical and petrological evidence for subduction–accretion processes in the Archean Eastern Indian Craton by Saha, Aniki, R. Basu, Asish, Garzione, Carmala N, Bandyopadhyay, Pradyot K, Chakrabarti, Amitabha

“…The composition of sandstones often provides key evidence about the tectonic, weathering and transport processes operating on the surface at the time of…”
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Implications of Franciscan Complex graywacke geochemistry for sediment transport, provenance determination, burial-exposure duration, and fluid exchange with cosubducted metabasites by Ghatak, Arundhuti, Basu, Asish R., Wakabayashi, John

“…Interpretation of graywacke provenance has long been used to evaluate the record of tectonic process in orogenic belts. Our geochemical data from graywackes of…”
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Rapid Eruption of the Siberian Traps Flood Basalts at the Permo-Triassic Boundary by Renne, Paul R., Basu, Asish R.

“…The Siberian Traps represent one of the most voluminous flood basalt provinces on Earth. Laser-heating $^40$Ar/$^39$Ar data indicate that the bulk of these…”
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Thermal maturity evaluation using Raman spectroscopy for oil shale samples of USA: comparisons with vitrinite reflectance and pyrolysis methods by Kibria, Md. Golam, Das, Souvik, Hu, Qin-Hong, Basu, Asish R., Hu, Wen-Xuan, Mandal, Subhadip

“…Thermal maturity is commonly assessed by various geochemical screening methods (e.g., pyrolysis and organic petrology). In this contribution, we attempt to…”
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Isotopic and geochemical evidence for a heterogeneous mantle plume origin of the Virunga volcanics, Western rift, East African Rift system by Chakrabarti, Ramananda, Basu, Asish R., Santo, Alba P., Tedesco, Dario, Vaselli, Orlando

“…Virunga volcanics in the western rift of the East African Rift system (EARS) show silica-undersaturated, ultra-alkaline, alkalic-mafic compositions. The two…”
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Chemical geodynamics of Western Anatolia by Chakrabarti, Ramananda, Basu, Asish R., Ghatak, Arundhuti

“…We report major and trace element concentrations and Nd-Sr-Pb isotopic data of 10 post-collisional volcanic domains in Western Anatolia, a seismically active…”
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Nd–Hf–Sr–Pb isotopes and trace element geochemistry of Proterozoic lamproites from southern India: Subducted komatiite in the source by Chakrabarti, Ramananda, Basu, Asish R., Paul, Dalim K.

“…The probable sources of some of the famous Indian diamonds are the 1.2 Ga old Krishna lamproites of Southern India, a rare Proterozoic occurrence of lamproites…”
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Geochemical study of arsenic release mechanisms in the Bengal Basin groundwater by Dowling, Carolyn B., Poreda, Robert J., Basu, Asish R., Peters, Scott L., Aggarwal, Pradeep K.

“…To investigate arsenic mobility in the Bengal Basin groundwater, we sampled water wells and sediments throughout the region. There are strong correlations…”
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High influx of carbon in walls of agglutinated foraminifers during the Permian-Triassic transition in global oceans by Nestell, Galina P., Nestell, Merlynd K., Ellwood, Brooks B., Wardlaw, Bruce R., Basu, Asish R., Ghosh, Nilotpal, Lan, Luu Thi Phuong, Rowe, Harry D., Hunt, Andrew, Tomkin, Jonathan H., Ratcliffe, Kenneth T.

“…The Permian-Triassic mass extinction is postulated to be related to the rapid volcanism that produced the Siberian flood basalt (Traps). Unrelated volcanic…”
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Sm-Nd isotopic and geochemical study of the Archean tonalite-amphibolite association from the eastern Indian Craton by SHARMA, Mukul, BASU, Asish R, RAY, Sagar L

“…The results of a samarium-neodymium isotopic, major element and rare earth element study of the Older Metamorphic Group tonalite-amphibolite association of the…”
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Precambrian crustal growth and tectonics: introduction by Singh, Vinod K., Chandra, Ram, Basu, Asish R., Verma, Surendra P., Biswal, Tapas K.

“…International Geology Review Precambrian crustal growth and tectonics: introduction…”
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Trace element and isotopic evidence for Archean basement in the Lonar crater impact breccia, Deccan Volcanic Province by Chakrabarti, Ramananda, Basu, Asish R.

“…The Lonar impact crater in the Deccan Traps of the Indian peninsula provides unique opportunities to study physical and chemical processes of impact cratering…”
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The groundwater geochemistry of the Bengal Basin: Weathering, chemsorption, and trace metal flux to the oceans by Dowling, Carolyn B., Poreda, Robert J., Basu, Asish R.

“…Sixty-eight groundwater samples from the Ganges-Brahmaputra floodplain in the Bengal Basin were analyzed to assess the groundwater geochemistry, the subsurface…”
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