Figure 1
From: Seismic evidence of pop-up tectonics beneath the Shillong Plateau area of Northeast India
Topographic map of the Shillong Plateau showing major earthquakes (stars) M ≥ 7.0 including an 1897 great (Ms 8.7) earthquake. The focal mechanism of the 1897 earthquake is shown. The major tectonic features are also shown, such as DF: Dauki Fault; DT: Dapsi Thrust; OF: Oldham Fault; DuF: Dudhani Fault; KF: Kulsi Fault; BT: Barapani Thrust; BF: Brahmaputra Fault; NF: Naga Fault; D-KF: Dhansiri–Kopili Fault; SF: Sylhet Fault; UT: Ultapani Thrust; AF: Atherkhet Fault; EHZ: Eocene Hinge Zone and MBT: Main Boundary Thrust. The tectonic features are taken from the Geological Society of India, http://bhukosh.gsi.gov.in/Bhukosh/Public and from published literature. Triangles show the seismic station while red solid circles show the seismicity, used in the present study. Inset the location of the Shillong in the map of India (left panel) while right panel shows N–S section from Tibet to the Bay of Bengal showing the geometry of the plateau pop-up tectonic models proposed by (a) Bilham and England (2001) and (b) Kayal et al. (2012).
