2017 36 (1):  135-143    ISSN: 1004-5589:  CN: 22-1111/P Geochemical characteristics and its paleo-environmental significance of Permian carbonate rocks in Khorat Basin, Thailand DU Gui-chao, CANG Hui, HU Shuang-quan, CAO Qing-rong, GAO Peng-peng Institute of Shaanxi Yanchang Petroleum(Group) Corporation, Xi'an, 710075, China Received 2016-04-19  Revised 2016-07-11  Online 2017-03-25 Reference   Corresponding author: