The thrid part are tuff, ferruginous dolomite, crystal tuff and volcanic breccia.
第三段以凝灰岩、铁质白云岩、晶屑凝灰岩、火山角砾岩为主。
There are three genetic types of mineralized breccia related to porphyry deposits in China, i. e. explosive, intrusive and volcanic breccia.
我国与斑岩矿床有关的矿化角砾岩的主要成因类型为爆破角砾岩、侵入角砾岩、火山角砾岩等。
The analysis of volcanic petrology indicates that the volcanic lithofacies can be divided into volcanic breccia, lava, ash and sedimentary ones.
通过对火山岩岩石学特征分析，将火山岩岩相划分为火山角砾岩柑、火山熔岩相、火山灰相和火山沉积相。
This investigation also finds that different lithology have different physical properties and the slaggy basalt, the amygdaline basalt and the volcanic breccia have the best physical properties.
不同岩性火山岩的物性也有较大的差别，并以熔渣状玄武岩、杏仁状安山岩、火山角砾岩为好；
The fractures around the volcanic dome are rich in structural breccia belt, which is good place for the ore depositing, and became the host structure.
火山周边断裂规模相对较大，其内多形成构造角砾岩带，是成矿物质沉淀、富集的理想场所和最有利的容矿构造。
This paper gives an uranium deposit example which relates directly to volcanic intrusion dormant explosion breccia in origin.
本文提供了一个与火山侵入-隐爆角砾岩有直接成因联系的铀矿床实例。
The diatreme breccia pipes belong to volcanic crater phase and volcanic conduit phase, and consist of breccias and binding material.
爆破角砾岩筒属火山口相和火山管道相，脉岩属次火山相。
The Proterozoic volcanic rocks in Xiaogaizhou section is composed of rhyakkumulate, la-va breccia and lava with andesitic composition;
小盖州剖面元古宙火山岩具有安山岩岩石成分，由熔结角砾岩、熔岩角砾岩及熔岩组成。
The Proterozoic volcanic rocks in Xiaogaizhou section is composed of rhyakkumulate, la-va breccia and lava with andesitic composition;
小盖州剖面元古宙火山岩具有安山岩岩石成分，由熔结角砾岩、熔岩角砾岩及熔岩组成。
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