Organic geochemistry of the Lower Permian Tak Fa Formation in Phetchabun Province,Thailand:implications for its paleoenvironment and hydrocarbon generation potential

作     者：Piyaphong Chenrai Supawich Fuengfu Piyaphong Chenrai;Supawich Fuengfu

作者机构：Petroleum GeoscienceFaculty of ScienceChulalongkorn UniversityBangkok 10330Thailand Basin Analysis and Structural Evolution Special Task Force for Activating Research(BASE STAR)Department of GeologyFaculty of ScienceChulalongkorn UniversityBangkok 10330Thailand 

出 版 物：《Acta Geochimica》 (地球化学学报（英文）)

年 卷 期：2020年第39卷第3期

页      面：291-306页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：financial support from the Ratchadaphisek Somphot Endowment Fund under Outstanding Research Performance Program  Science Super Ⅲ (Department)-009  Chulalongkorn University 

主　　题：Biomarker Depositional environment Source inputs Tak Fa Formation Khao Khwang Platform 

摘      要：The outcrop samples of the Tak Fa Formation(Lower Permian)in Phetchabun Province have been studied to determine their organic geochemical characteristic,depositional paleoenvironment,and hydrocarbon generation *** total organic carbon(TOC)values ranging from 1.42 to 4.58 wt%and extractable organic matter values ranging from 76.84 to 197.65 ppm of the Tak Fa Formation were generally low and associated with low S2 values(0.00-0.50 mg HC/g rock)and hydrogen index values in range of 0-32 mg/g TOC,although this could reflect highly thermal maturity and complex tectonic ***,kerogen classification can be based on a nonbiomarker study for these outcrop samples *** non-biomarker plot,Pr/n-C17 and Ph/n-C18 from this study indicates that organic matter originally comes from typeⅡ/III *** samples were also investigated and indicated that the organic matter inputs were derived from mixed marine and terrigenous sources and deposited under suboxic to oxic *** depositional environment of the Tak Fa Formation in this study is interpreted to be an estuarine environment or restricted lagoonal carbonate *** has been achieved from normal alkane and isoprenoids distributions,terpane,and sterane ***,the Tak Fa Formation is considered to be a hydrocarbon source rock during the time of the *** the geochemical data in this study indicate that the Tak Fa Formation has experienced high maturation,one or more locations could meet a condition that places this formation to be an active source *** approach and concepts presented in this study can be applied to similar evaporite-carbonate deposits in Thailand to find more petroleum plays.