摘要
作者对四川盆地 2 4条以海相碳酸盐岩地层为主的下三叠统剖面作了系统的研究 ,在取得了丰富的牙形刺资料的基础 ,对下三叠统牙形刺进行了区域对比 ,划分了 7个牙形刺带。并对牙形刺色变与油气的关系等进行了研究。编制了 CAI、古地温等值线图及其与油气分布关系图。并提出了该盆地最有利的油气远景区 CAI=2— 3;有利的产油气区 CAI=2 .5— 3的新看法。
The lower Triassic mainly consists of marine carbonate strata and is important for natural gas production in Sichuan Basin.Totally,2 4 sections of the lower Triassic have been systematically investigated,and more than 1 0 0 0 samples containing abundant con- odonts have been collected and processed.By comparing conondont data in Sichuan Basin with that in other regions,the lower Triassic is divided into seven zones.The relationship between conodont color alteration and hydrocarbon occurences have been particularly dis- cussed.Using these data,the contour maps of conodonts color alteration index(CAI) , palaeogeothermal and hydrocarbon phases are drawn.The maps indicate that the areas with CAI2 .0 -3 .0 are bestcandidates for petroleum exploration,and thatareas with CAI 2 .5-3 .0 are most favorable for gas survey.
出处
《微体古生物学报》
CSCD
北大核心
2000年第1期99-109,131-132,共11页
Acta Micropalaeontologica Sinica
基金
油气藏地质及开发工程国家重点实验开放基金项目资助 !课题编号 :PLN971 9
