深坳陷 meaning in English
morphologic deep
Examples
- The basin - formed mechanism , evolution model and petroliferous geological features of compresso - shear basins in the world are analyzed , by which six aspects of the features are summarized as follows : 1 ) in the compresso - shear process , the sedimentary speed of basin is high , forming thicker coarse - grained clastic rocks which normally shape good petroleum reservoir ; 2 ) the source rocks of basin tend to coming from the organic matter - enriched rocks formed in pre - compresso - shear stages , except that in intense compresso - shear process , deep water - semi deep water source rocks are possibly developed in pre - compresso - shear stages , e4xcept that in intense compresso - shear process , deep water - semi deep water source rocks are possibly developed in frontal of deep depression ( fore deep ) of thrust belt ; 3 ) the en echelon folds ( including anticline and fault - nose structure ) are generally as good oil traps ; 4 ) the compresso - shear process is helpful to hydrocarbon accumulation ; 5 ) it may promote the maturity and hydrocarbon - generating process of organic matte , and 6 ) the thrust belts in the surrounding areas of compresso - shear basin are favorable are favorable domains for petroleum concentration
摘要通过对世界上压扭性盆地的成盆机制、演化模式和油气地质特点分析，总结压扭性盆地具有6个方面的石油地质特征：压扭作用期间盆地的沉积速率较高，一般形成较厚的粗碎屑沉积，它们常构成很好的油气储集层：盆地的烃源岩往住来自于前压扭期砂成的富含有机质的岩石，但在强烈的压扭作用期间，在冲断带的前缘深坳陷（前渊）中有可能发育深水半深水相的烃源岩；压扭（张扭）作用期间形成的雁行式褶皱（包括背斜和断鼻等）往住是很好的油气圈闭；压扭作用易于成藏；压扭作用可以促进有机质的成熟生烃作用；压扭性盆地的周边冲断带是油气赋存的有利部位。 - According to these results combined with exploration practice , foot favorable exploration zones are selected , these are the integrated anticline traps below the tertiary gypsum halite , gypsum mudstone in kuqa foreland thrust belts , the second and the third row structural bells in southern junggar foreland thrust belt , the unconventional natural gas pools in die yanshan palaeohigh in north and south of western sichuan basin , the gentle fold structural belt in central sichuan basin and the deep depression in sichuan basin , and the cold take and nanbaxian structural belt in northern margin of qaidam basin
依据理论分析及勘探实践，优选出4个有利的勘探区带，它们是：库车前陆冲断带古近系、新近系膏盐岩、膏泥岩之下的完整背斜圈闭；准南前陆冲断带第二、第三排构造带；川西北部及南部燕山运动期古隆起、川中平缓褶皱构造带以及深坳陷内部的非常规天然气；柴北缘冷湖南八仙构造带。