A5018379540- Geological and Geochemical Analysis
- earthquake and tectonic studies
- High-pressure geophysics and materials
- Hydrocarbon exploration and reservoir analysis
- Geological Studies and Exploration
- Atmospheric and Environmental Gas Dynamics
- Geochemistry and Geologic Mapping
- Seismology and Earthquake Studies
- Earthquake Detection and Analysis
- Metal Forming Simulation Techniques
- Seismic Waves and Analysis
Texas A&M University
2019-2024
Lamont-Doherty Earth Observatory
2024
Indian Institute of Technology Roorkee
2017-2019
A model for intermediate-depth earthquakes of subduction zones is evaluated based on shear localization, heating, and runaway creep within thin carbonate layers in an altered downgoing oceanic plate the overlying mantle wedge. Thermal instabilities lenses add to potential mechanisms seismicity, which are serpentine dehydration embrittlement slabs or viscous narrow fine-grained olivine zones. Peridotites subducting plates wedge may be by reactions with CO2-bearing fluids sourced from seawater...
The northwestern domains of India record Proterozoic orogenies that reflect global cycles convergence and extension. A garnet-biotite migmatitic orthogneiss hosted within the Agucha-Kekri Shear Zone sandwiched between Bhilwara Belt North Delhi Fold (NDFB) has two zircon populations yielding U-Pb ages 1726 938 Ma. older age is correlated with intrusion migmatite protolith, consistent partial melting event recorded in gneisses southern margin Belt. younger interpreted as migmatization....
Abstract Garnetiferous pelitic to psammopelitic migmatites widespread across the central and eastern part of Aravalli–Delhi Fold Belt in NW India record two distinct orogenies, e.g. Aravalli Orogeny (1.7–1.6 Ga) Delhi (1.0 Ga). In this study, we integrate field geological studies with textural mineral–chemical analyses, P–T pseudosection modelling situ monazite dating anatectic Supergroup occurring along Deoli–Shahpura segment. The study reveals formation peak assemblages garnet +...
Intraplate regions commonly host energetic earthquakes on less-prominent fault zones, raising questions how structure may influence intraplate seismogenesis. Here, we investigate the causative of strongly-felt April 5, 2024 Mw4.8 New Jersey Earthquake which occurred near misoriented 300-km long Ramapo Fault. Field mapping ancient fracture networks reveals that up-dip projection relocated aftershocks is co-located with a previously unmapped zone striking parallel to mainshock's nodal plane,...
<p>Seismicity of subduction zones at upper-mantle depths is commonly explained by dehydration reactions serpentine and hydrous silicates reductions in effective pressure. However, the conditions Wadati-Benioff zone seismicity do not strictly correspond to temperatures dehydration, there no independent evidence that seawater penetrates lithosphere form >30km below seafloor. Altered may contain magnesian carbonates addition silicates, both top plates, where...