摘要
塔里木盆地经历了前震旦纪古地槽发育阶段、古生代地台发育阶段和中新生代陆相盆地发育阶段。早古生代和三叠、侏罗纪生油坳陷发育;海西期有大型隆起、断裂、褶皱形成;燕山期发育大型披覆构造;喜山期有大量局部构造发育。海西晚期和喜山期是两次重要的生油和聚油期。
Tarim Basin experienced three development stages such as Presinian geosyncline,Paleozoic platform and Meso-Cenozoic continental basin stages.In Presinian stage,the paleogeosyncline shrinked and the continental nucleus expanded continuously,thus form-ing immense Tianshan-Tarim Platform in the end of the Proterozoic.The platform wasdisintegrated until Early-Middle Caledonian,forming a huge oil-generation depression—Amang Depression in the north of the platform.During late Caledonian to early Hercyni-an,uplifts and depressions developed in the region,forming the North Tarim Uplift.Mid-dle Hercynian was the main stage for hydrocarbon generation and accumulation,theNorth Tarim Uplift continued to expand and East Tarim Uplift formed.Early Permiantectonic movement ended the development of sea basin,and stopped oil generation of Pa-leozoic source rocks.During Meso-Cenozoic,oil-generation depressions formed in northand south sides of Xinhe Uplift which became a large Mesozoic oil accumulation zone ofdrape structural type in Indo-Sinian and Yenshanian stages.Since Indian and Asian Platescompressed and collided each other,Tianshan and Kunlun Mountains folded systems up-lifted intensely,and the sediments in the associated piedmont depression unceasingly over-lapped towards Tarim Basin,thus forming favourable caprocks for Meso-Cenozoic hydro-carbon resources in the basin,leading to the oil generation of Paleozoic source rocks.TheFolded-faults formed in the end of Himalayan stage prepared necessary conditions for hy-drocarbon migration and accumulation again.
出处
《石油与天然气地质》
EI
CAS
CSCD
北大核心
1992年第1期15-27,共13页
Oil & Gas Geology
