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凝灰岩充填着整个盆地。The tuffaceous blanketed the entire basin.

凝灰岩充填着整个盆地。The tuffaceous blanketed the entire basin.

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凝灰岩构造的局部残存段的厚度约为200-250?铡?。The tuffaceous formation, isolated remnants, are about 200-250 ft thick.

凝灰岩构造的局部残存段的厚度约为200-250?铡?。The tuffaceous formation, isolated remnants , are about 200-250 ft thick.

通过岩矿检测，得知梅园石属于凝灰质砂岩，孔隙率较大。It was found that Meiyuan Stone is a tuffaceous sandstone of high porosity.

油页岩常与上覆沉凝灰岩或其它凝灰质岩石呈伴生关系。Oil shale always has the accompanying relationship with overlying sedimentary tuff or other tuffaceous strata.

储层类型主要包括基岩风化壳、岩、灰质砂岩和砾岩。The types of reservoirs main include base rock weathering crust, sandstone, tuffaceous sandstone and conglomerate.

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储层类型主要包括基岩风化壳、砂岩、凝灰质砂岩和砾岩。The types of reservoirs main include base rock weathering crust, sandstone, tuffaceous sandstone and conglomerate.

甘肃酒泉盆地青西油田泥砾岩相和泥云岩相储层中发育两种裂缝系统。There are two types of fractures in the muddy gravel and the tuffaceous dolomite in Qingxi oilfield, Jiuquan Basin.

本课题主要针对灰岩油藏乳化压裂液降滤失机理开展研究。The research of this thesis was mostly run on fluid loss mechanism of emulsified fracture fluid in tuffaceous reservoir.

考虑泥质、凝灰质和油气的影响，建立凝灰质砂岩有效孔隙度解释方程。Avoidingthe effect of shaly, tuffaceous and oil, this text established the interpretation equation of the tuffaceous sands effective porosity.

凝灰质的水解蚀变及长石和中、酸性岩屑在成岩过程中的次生变化是造成海拉尔地区粘土含量高的主要原因。It is thought that hydrolysis of tuffaceous material and secondary alteration of feldspars and rock debris are two main factors responsible for the high content of clay minerals.

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其主要储集层为下白垩统南屯组、铜钵庙组砂岩、凝灰质砂砾岩和凝灰岩及基岩风化壳。The main reservoirs include the Lower Cretaceous Nantun Formation and Tongbomiao Formation and the rock types are sandstone, tuffaceous glutenite, tuff and base rock weathering crusts.

其主要由一套碎裂安山凝灰岩、蚀变火山岩、轻微蚀变碎裂不等粒砂岩、坍塌角砾岩、含粉砂碎裂凝灰质泥岩等组成。This area consists of cataclastic andesitic tuff, altered volcanic rock, slightly altered and cataclastic anisomerous sandstone, slump breccia, and silt bearing cataclastic tuffaceous shale.

这些火山事件沉积遍及全区，主要为凝灰岩、沉凝灰岩及凝灰质沉积岩，它们在时空分布上有一定规律。These volcanic event deposits are wide spread in the region and consist mainly of tuffs, tuffites and tuffaceous sedimentary rocks. There is some regularity in their temporal-spatial distribution.

这些火山事件沉积遍及全区，主要为凝灰岩、沉凝灰岩及凝灰质沉积岩，它们在时空分布上有一定规律。These volcanic event deposits are wide spread in the region and consist mainly of turfs , tuffites and tuffaceous sedimentary rocks. There is some regularity in their temporal-spatial distribution.