Research
The group studies rock deformation and its application in hydrocarbon exploration, active tectonics, geomorphology and volcanism. The research group is specialized in techniques like Fracture induced Electromagnetic Radiation (FEMR), Anisotropy of Magnetic Susceptibility (AMS) and magma emplacement process, Analogue structural modelling, Reservoir modelling, Seismic interpretation, Fault seal analysis, Fracture analysis and modelling, and Pore pressure prediction.
The figures above depict the swath profile analysis in the western part of the Sikkim Darjeeling Himalayas
Structural Geology, Tectonics and Tectonic-geomorphology
Our group studies the active tectonic processes and seismicity in the different parts of the Indian Subcontinent (e.g. Himalayan Mountain Belts, Narmada-Son Lineaments, Koyna, Meghalaya). We use Remote Sensing, Analogue, and Numerical experiments, and Fracture-induced Electromagnetic Radiation (FEMR) with extensive fieldwork to determine the zones of active tectonism. We also deal with several triggering factors and their effects on seismicity.
Related publications: Das and Mallik, 2020; Das et al., 2021; Das and Mallik, 2021
The above figure shows SHmax distribution in different tectonic zones of Indian plate and Tibetan plateau
Geophysics (Fracture Induced Electromagnetic Radiation Technique)
We use the FEMR technique to determine the near-surface maximum horizontal stress azimuth, stress inside tunnels, landslide slip plane delineation, etc. We are also investigating the applicability of the technique to monitor seismic events and Early Warning Systems for landslide hazards in the Himalayan region.
Related publications: Das et al., 2020; Das et al., 2021 Das and Mallik, 2021;
Figure shows DFN reconstruction of cleat structure using the geometrical attributes of cleats in a coal sample
Petroleum Geology (Coal Bed Methane)
Fractures in coal act as conduits for the flow of Coal bed methane (CBM). The group is focused on fracture characterization of CBM reservoirs using the integration of Discrete Fracture Network (DFN) models and Seismic data interpretation. The current area of interest being Raniganj basin encompassing the Gondwana deposits. The group is also working on developing computational frameworks for reservoir scale attribute estimation.
Related publications: Bandyopadhay et. al. 2019, 2020, 2022
Main Stage Deccan Flood basalt with multiple smaller magma reservoirs interconnected through pathways and undergoing REAFC (Recharge-Eruption-Assimilation-Fractional crystallization) process.
Geodynamics and Magma Emplacement Processes
The group is focused on the geodynamic processes that control the magma emplacement mechanisms for the Deccan dykes (e.g. Nandurbar-Dhule, Pachmarhi and Nasik-Pune dykes) with the AMS (Anisotropy of Magnetic Susceptibility) and Palaeomagnetic techniques. The group is also trying to understand the plumbing mechanism of the Deccan dykes by determining the magmatic overpressure and source depth of the magma chambers.
Related publications: Das et. al. 2021, Shukla et. al. 2022
Carbon Capture and Storage
Basalt, a widely distributed rock with a vesicular texture, shows promise for carbon capture and storage (CCS) in porous geological media. This technique helps mitigate anthropogenic CO2 emissions, which contribute to global warming. Basalt's injectivity and storage capacity are enhanced by its vesicular texture, while its abundant divalent cations facilitate rapid mineral carbonation. Our research aims to assess the feasibility of in-situ mineral carbonation in basalt for effective geological CO2 storage.