中文摘要：

北美典型页岩气藏赋存的泥页岩主要为细颗粒沉积,呈暗色或黑色薄层状或块状产出。页岩气储层无机矿物成分中硅质含量较高,含有黄铁矿、磷酸盐矿物（磷灰石）、钙质和黏土矿物。具有相对高有机质质量分数,代表了富有机质的缺氧的沉积环境。不含或者含较少的陆源碎屑输入。有机质类型以Ⅰ和Ⅱ型干酪根较为常见。生物化石碎片在页岩层中比较常见,化石碎屑的类型多样化。重点剖析了福特沃斯盆地Barnett页岩的沉积发育模式,福特沃斯盆地是一狭长的前陆盆地,主要沉积区离物源区较远,Barnett页岩沉积于较深的静水缺氧环境,沉积速度缓慢（饥饿性沉积）,最终形成富含有机质的Barnett页岩。常见生物化石碎片,但缺少生物扰动遗迹,推测盆地中大部分的生物化石为外部输入的结果。上升流作用致使磷酸盐矿物（磷灰石）发育。北美典型页岩气藏的岩石学特征、沉积环境和福特沃斯盆地Barnett页岩沉积发育模式可以用来指导我国页岩气勘探,黔南坳陷下寒武统黑色高碳质页岩系、二叠系吴家坪组和四川广元—绵竹地区下寒武统泥页岩具有和北美典型页岩气藏可类比的岩石学特征、沉积环境和沉积模式,可作为页岩气勘探的优选区域。

英文摘要：

Typical shale gas reservoirs in North America are composed of fine-grained,laminated or non-laminated,dark or black sediments.The shale contains a higher quantity of quartz and also pyrite,phosphate（apatite）,calcareous and clay minerals.High organic matter content of the shale indicates a deposition in organic rich and anoxia environment.While it involves no or few terrigenous debris.The organic matter is dominated by Ⅰand Ⅱ types.The shale gas reservoirs usually contain various biota fossils.This article mainly discuss about the depositional model of the Barnett in the Fort Worth Basin（FWB）.The FWB occupied a long,narrow foreland basin which was far from provenance.The Barnett shale was slowly deposited（starved deposit） in deep,euxinic and anoxic environment,forming the organic rich Barnett shale.The biota fossils contained in the Barnett shale and the absence of bioturbation indicate that the fossils should have been transported from other areas.Upwelling may also have contributed to phosphate grain development.Lithologic character,depositional environment and depositional model of typical shale gas reservoirs in North America can guide shale gas prospecting in our country.Both the Lower Cambrian and the Permian Wujiaping Formation in southern Guizhou depression and Lower Cambrian in Guangyuan-Mianzhu area exhibit analogicanalogical petrology character,depositional environment and depositional model of typical shale gas reservoirs in North America.They should be the favorable exploration targets.