Characteristics of crustal stress field in Tienshan area

Based on 1143 focal mechanisms in Tienshan area from 1900 to 2019, according the world stress map classification criterion, main types of dislocations are thrust and strike slip; The results parameter statistics show that nodal plane mechanism solution is basically consistent with tectonic area, orientation P axis perpendicular which shows horizontal nearly NS thrust. direction maximum principal compressive 175.1°, minimum 67.8°, plunge angle 4.3°, 75.8°, relative ratio R 0.80, state compressional, indicates background compressional orogeny.