Study on structural stress fields of Kuruktag area, Xinjiang, China
Zhang Peng1, Hou Guiting1, Pan Wenqing2, Qi Yingmin2, Meng Qingfeng1
1. Key Laboratory of Orogenic Belts and Crustal Evolution in Ministry of Education, School of Earth and Space Sciences, Peking University, Beijing 100871;
2. Institute of Exploration and Development, Tarim Oil and Gas Branch Company, Korla, Xinjiang 841000
Four periods of structural stress fields can be recognized since Sinian System in Kuruktag and adjacent areas based on structural evolution analysis,that is Early Paleozoic,Later Paleozoic,Mesozoic and Cenzoic. Their maximum principal stress orientation are respectively NNE,NWW-NW,NE and NNE-SN,which are derived from the occurrence data of the stress response structures, i.e., joints,folds and dykes. Furthermore,the author simulated the stress field since Neogene based on 2D finite element method,to deeply analyze the following questions:Distribution and direction of stresses in the study area,influence of the geometry model for the stress field,as well as the dynamics of structures related to stress field.