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风城组的白云岩及火山碎屑岩的分布部位也为良好的储层。Dolomite and volcaniclastic rocks of Fengcheng formation are also good reservoirs.

火山碎屑岩可见熔集块岩、熔角砾岩和熔结凝灰岩。The volcaniclastic rocks can be seen as fused lumps, fused breccias and fused tuffs.

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藏南古错地区早白垩世以出现一套火山岩屑砂岩为特征。The Early Cretaceous Gucuo sandstones in southern Tibet are characterized by volcaniclastic litharenites.

熔积岩是火山碎屑岩的一种特殊类型,由熔浆和未固结的湿沉积物两种组分掺杂混合而成。Peperite is a special kind of volcaniclastic rock formed by the intermingling of magma with wet sediments.

其中火山碎屑岩和中—中酸性火山岩的孔隙度较高。Thereinto the porosities are higher than other lithologies in volcaniclastic rock and neutral to neutral acidic volcanic.

火山碎屑岩储层的成岩作用类型主要为气孔及裂缝的充填作用,为气孔状高孔低渗储层。Volcaniclastic reservoir is high porosity-low permeability vesicular reservoir, and its diagenesis is mainly packing action of vacuole and fracture.

安溪铅山铅锌矿区复成分角砾岩为一套火山碎屑岩-沉火山碎屑岩-火山碎屑沉积岩。The polymictic breccia in the Qianshan lead-zinc ore district of Anxi County is a suit of volcaniclastic rock, sedimentary pyroclastic rock and pyroclastic sedimentary rock.

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火山活动的主震时期产生了大量的主酸性以及基性火山岩,并伴随着火山碎屑沉积物,且其中包含着分离的煤层。The principal period of volcanic activity produced large volumes of mainly acid and basic volcanic rocks accompanied by volcaniclastic sediments which contain isolated coal seams.

因此,有根据认为,金牙金矿床的硫砷金等成矿物质主要来自下伏晚二叠世基性岩和基性火山碎屑沉积岩。It is though that ore-forming materials such as sulfur, arsenic and gold in Jinya gold mining must come from underlying basic rock and basic volcaniclastic rock Late Permian in age.

利用偏光显微镜、扫描电镜、染色法以及X-衍射分析等方法,查明南屯组火山碎屑岩成岩作用模式。Using polarization microscope, scanning electron microscope, staining method and X-ray diffraction, the authors studied diagenetic pattern of volcaniclastic rocks of Nantun Formation.

群系有着火山碎屑类复理石层序特征,此层序沉积于活动大陆边缘,在那里沉积酌只会遇到弱岩浆活动。The formation has the character of a volcaniclastic flyschoid sequence deposited on an active continental margin where the sedimentation was accompanied by only a weak magmatic activity.