A5035190506- Geological and Geochemical Analysis
- earthquake and tectonic studies
- Geochemistry and Geologic Mapping
- High-pressure geophysics and materials
- Geology and Paleoclimatology Research
- Hydrocarbon exploration and reservoir analysis
- Geological and Geophysical Studies
- Paleontology and Stratigraphy of Fossils
- Geochemistry and Elemental Analysis
- Clay minerals and soil interactions
- Pleistocene-Era Hominins and Archaeology
- Mineral Processing and Grinding
- Banana Cultivation and Research
- Earthquake Detection and Analysis
- Advanced Data Storage Technologies
- Plant and Fungal Species Descriptions
- Groundwater and Isotope Geochemistry
- Tracheal and airway disorders
- Seismology and Earthquake Studies
- Radioactive element chemistry and processing
- Mineralogy and Gemology Studies
- South Asian Studies and Conflicts
- Rock Mechanics and Modeling
- Geochemistry and Geochronology of Asian Mineral Deposits
- Scientific Computing and Data Management
University of Calcutta
2015-2024
Amity University
2024
Indian Institute of Science Education and Research Mohali
2024
Physical Research Laboratory
1998-2020
University of Hawaii System
2012
University of Hawaiʻi at Mānoa
2004
NIHR Surgical Reconstruction and Microbiology Research Centre
2003
The ophiolite suite from south Andaman Islands forms part of the Tethyan Ophiolite Belt and preserves remnants an ideal sequence comprising a basal serpentinized tectonised mantle peridotite followed by ultramafic mafic cumulate units, basaltic dykes spilitic pillow basalts interlayered with arkosic wacke. Here, we present new major, trace, rare earth (REE) platinum group (PGE) element data for metasomatized peridotites (dunites) exposed in representing tectonized section suite. Geochemical...
The Easter Seamount Chain and Nazca Ridge are two of the most conspicuous volcanic features on plate. Many questions about their nature origin have remained unresolved because a lack geochronological geochemical data for large portions both chains. New 40Ar−39Ar incremental heating age determinations dredged rocks from volcanoes east Salas y Gomez Island show that, with very few exceptions, ages increase steadily to 1·4 30 Ma, confirming that chains parts same hotspot trail indicating...
Abstract An integrated approach involving Sr–Nd isotope, trace and rare earth element analyses tracks multiple sources of the Mesozoic sediments Kutch Basin at western continental margin India. High ( 87 Sr/ 86 Sr) t (ratio time deposition), negative ε Nd high concentrations large-ion lithophile elements (LILEs) indicate upper source. Ratios Nb/Ta Zr/Hf suggest sedimentary felsic igneous sediments. The moderate to concentration La, Th Sc, light (LREE-) enrichment, weak Eu anomalies...
Precambrian mafic magmatism is an important global episode which played a significant role in the crustal evolution. In India, Singhbhum Craton being oldest craton, witnessed occurrences of geological activity, marked by several episodes volcanism, plutonism, sedimentation spanning from Palaeoarchean to Mesoproterozoic age. Here we present petrological and geochemical characteristics volcanic rocks (occurring western Iron Ore Group (IOG), Craton, eastern India) evaluate their petrogenetic...
Cratonic stabilization was a critical crustal process during the Hadean to Archean for formation of cratons. The understanding how and where this took place is significant evaluate architecture continents. Singhbhum Craton eastern India has well preserved Precambrian volcano-sedimentary sequences. Simlipal complex consists circular bands mafic volcanic rocks interlayered with quartzites/ shales/phyllites. In present study, we report petrographic geochemical characteristics quartzites from...