Editors’ Highlights are summaries of recent papers by AGU’s journal editors.
Source: Geochemistry, Geophysics, Geosystems
Most of the convergence between India and Eurasia in the Himalayan belt is accommodated by thrusting along a series of crustal-scale faults that eventually merge at depth on the Main Himalayan Thrust (MHT). In regions such as Sikkim (northern India), where India’s northward motion is oblique to the strike of the belt, convergence is believed to be partitioned between thrusting and strike-slip faulting along transverse fault zones.
Using local earthquake data from the longest running seismic network in Sikkim Himalaya, Uthaman et al. [2024] document seismic activity on the Dhubri-Chungthang Fault Zone, one of the three major fault systems that orthogonally cut the major thrust faults of Central-Eastern Himalaya. This finding highlights the complex dynamics of Himalayan faults, and contributes to reshape our understanding of Himalayan lineaments as active faults. It calls for substantial revisions to structural and tectonic cross-sections of the Himalayas.
Citation: Uthaman, M., Singh, C., Singh, A., Hetényi, G., Dutta, A., Kumar, G., & Dubey, A. K. (2024). Complex multi-fault dynamics in Sikkim Himalaya: New insights from local earthquake analysis. Geochemistry, Geophysics, Geosystems, 25, e2023GC011363. https://doi.org/10.1029/2023GC011363
—Anne Paul, Editor, G-Cubed
Text © 2024. The authors. CC BY-NC-ND 3.0
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