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1870 Batang Earthquake
On April 11, 1870, a moment magnitude 7.3 earthquake struck Batang County in Sichuan, China. The earthquake had a maximum Modified Mercalli intensity of X (''Extreme''). The earthquake and a large fire resulted in between 2,300 and 5,000 fatalities. Tectonic setting Sichuan is located at the edge of the Tibetan Plateau, a portion of the continental crust within the Eurasian Plate that was thickened and uplifted by the India–Asia collision. Deformation of the Eurasian Plate within the collision zone is accommodated by active thrust and left-lateral faulting. A great portion of strike-slip deformation is accommodated along the Altyn Tagh, Kunlun, Haiyuan and Xianshuihe fault systems. Earthquake The earthquake occurred as a result of right-lateral strike-slip faulting along the Batang Fault. The Batang Fault is an active northeast–southwest trending strike-slip fault. Seismicity has been recognized on the fault since the Holocene. An annual slip rate of 3–4 mm was indica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strike-slip
In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements. Large faults within Earth's crust result from the action of plate tectonic forces, with the largest forming the boundaries between the plates, such as the megathrust faults of subduction zones or transform faults. Energy release associated with rapid movement on active faults is the cause of most earthquakes. Faults may also displace slowly, by aseismic creep. A ''fault plane'' is the plane that represents the fracture surface of a fault. A ''fault trace'' or ''fault line'' is a place where the fault can be seen or mapped on the surface. A fault trace is also the line commonly plotted on geologic maps to represent a fault. A ''fault zone'' is a cluster of parallel faults. However, the term is also used for the zone of crushed rock along a single fault. Prolonged motion along closely spaced faults can blur the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
