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Subsurface Characterization of Thrust Belts and Synclinal Basins of the Kohima Region, NE India Through Gravity Modelling: Implication for Hydrocarbon Resources.

Kumar ChR, Maiti S, Santosh M, Naganjaneyulu K.

GEOPHYSICAL PROSPECTING. 2026;74(2)

https://doi.org/10.1111/1365-2478.70143 

The study used Bouguer gravity data to investigate hidden subsurface structures in the Kohima region of northeast India, which includes the Naga-Disang thrust belt, Brahmaputra foreland basin, and Assam Arakan inner fold belt. The results revealed complex thrust geometry, basement faults, half-graben structures, steep anticlines, and synclinal basins beneath the surface, important for hydrocarbons accumulation. The study concludes that the region has good potential for oil and gas exploration, especially in areas associated with concealed fault blocks and synclinal basins.

Fig: (a and b) Inversion modelling attempted over significant gravity anomalies along the NE-SW trending thrust and fold belts of the Kohima area; (b) shows the voxel distribution and gravity causative source depths beneath the thrust and fold belts.

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