摘要
本文从中国陆盆断 (陷 )拗 (陷 )结构发育的特点出发 ,总结了中国陆盆断 (陷 )拗 (陷 )结构样式。根据重新处理的莺歌海盆地地震剖面 ,指出莺歌海盆地和中国其它盆地一样 ,也是先断 (陷 )后拗 (陷 )双层结构 ,其中上覆拗陷构造层为碟型结构 ,其厚度可达 10 0 0 0～ 130 0 0 m,是中国沉积盆地中拗陷构造层厚度最大的。而下伏箕状断陷的组合形态可分为对翘型、反翘型、单翘型三大类 ;用板块学说分析了莺歌海盆地的形成机理 ,指出该盆地是由于印度板块早第三纪向印支板块俯冲、晚第三纪时强烈挤压印支板块形成的 ;从中国陆盆断 (陷 )拗 (陷 )结构对油气的控制作用出发 ,总结了 11种构造圈闭油气藏 (田 )类型。
The paper summarized structural pattern of fault depression and depression starting from development feature of fault depression and depression structure in Chinese continental basin. It is pointed out that like the other basins in China, the Yingge Sea basin is a double layers structure which is fault first and depression afterward according to the reprocessing seismic profiles of Yingge Sea basin, among which the upper depressed structural layer is butterfly structure with thickness being 10000～13000m, the thickest depressed structural layer in Chinese depositional basin. Combination pattern of lower half graben like fault depression can be divided into three parts: half graben with the fault surface being face to face, half graben with the fault surface being back to back and terraced half graben. Using plate theory for analyzing forming mechanism of Yingge Sea basin, it is pointed out that the basin was formed by which Indian Plate divided into Indo China Plate in Paleo gene and pressed the later in Neogene. Sated from a control role played by fault depression and depression structure of Chinese continental basin to oil and gas, the authors predicted 11 types of oil and gas accumulation (field) belonging to structural trap.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2000年第5期590-599,共10页
Oil Geophysical Prospecting
关键词
中国陆盆结构
莺歌海盆地
地质结构
油气圈闭
Chinese continental basin structure, Yingge Sea basin, geological structure, oil and gas trap
