caa a22 4500 477047408 CHVBK 20180405111334.0 cr unu---uuuuu 170330e19960901xx s 000 0 eng 10.1007/BF00874731 doi (NATIONALLICENCE)springer-10.1007/BF00874731 Stress field and seismicity in the Indian shield: Effects of the collision between India and Eurasia [Elektronische Daten] [T. Gowd, S. Srirama Rao, K. Chary] Intraplate stresses and intraplate seismicity in the Indian subcontinent are strongly affected by the continued convergence between India and Eurasia. The mean orientation of the maximum horizontal compression in the Indian subcontinent is subparallel to the direction of the ridge push at the plate boundary as well as to the direction of compression expected to arise from the net resistive forces at the Himalayan collision zone, indicating that the intraplate stresses in the subcontinent, including the shield area, are caused by plate tectonic processes. Spatial distribution of historic and instrumentally recorded earthquakes indicate that the seismic activity is mostly confined to linear belts while the remaining large area of the shield is stable. The available conventional heat flow data and other indicators of heat flow suggest hotter geotherms in the linear belts, leading to amplification of stresses in the upper brittle crust. Many of the faults in these linear belts, which happen to be 200-80 m.y. old, are being reactivated either in a strike-slip or thrust-faulting mode. The reactivation mechanisms have been analyzed by taking into consideration the amplification of stresses, pore pressures, geological history of the faults and their orientation with respect to the contemporaneous stress field. The seismicity of the Indian shield is explained in terms of these reactivation mechanisms. Birkhäuser Verlag, 1996 Intraplate stresses nationallicence intraplate seismicity nationallicence linear belts nationallicence stable region nationallicence pre-existing faults nationallicence pore pressure nationallicence stress amplification nationallicence reactivation mechanisms nationallicence Gowd T. National Geophysical Research Institute, 500 007, Hyderabad, (A.P.), India aut Srirama Rao S. National Geophysical Research Institute, 500 007, Hyderabad, (A.P.), India aut Chary K. National Geophysical Research Institute, 500 007, Hyderabad, (A.P.), India aut pure and applied geophysics Birkhäuser-Verlag 146/3-4(1996-09-01), 503-531 0033-4553 146:3-4<503 1996 146 24 https://doi.org/10.1007/BF00874731 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00874731 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gowd T. National Geophysical Research Institute, 500 007, Hyderabad, (A.P.), India aut NATIONALLICENCE 700 1- Srirama Rao S. National Geophysical Research Institute, 500 007, Hyderabad, (A.P.), India aut NATIONALLICENCE 700 1- Chary K. National Geophysical Research Institute, 500 007, Hyderabad, (A.P.), India aut NATIONALLICENCE 773 0- pure and applied geophysics Birkhäuser-Verlag 146/3-4(1996-09-01), 503-531 0033-4553 146:3-4<503 1996 146 24 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer