jgg     2015 35 (2):  273-277    ISSN: 0412-1961  CN: 21-1139/TG The Analysis of Tectonic and Inversion of the Paleostress Field in the  Zhangxian Salt Red Bed Basin in Northern Margin of West Qinling Department of Geology, School of Geological and Geomatics, Tianjin Chengjian University, 26 Jinjing Road, Tianjin 300384, China Received: 2014-04-13  Revised: null  Online: 2015-04-15 Supporting info