pyroclastic

Pyroclastic rocks are a kind of transitional and complex rocks between lavas and sedimentary rocks.

摘要火山碎屑岩是介于溶岩和沈积岩之间的过渡类型岩石,岩类复杂.

The ore-a bimodal rock association and exhibit assembly characteristics of pyroclastic rock, orebody and exhalite.

含矿岩系为双峰岩石组合,具火山碎屑岩-矿体 - 喷气岩“三位一体”特征.

The pyroclastic rock fragments comprise quartzite, schist, gneiss, basalt , andesite, rhyolite and quartz.

火成岩的碎块成分主要为石英岩 、 岩 、 麻岩 、 武岩 、 山岩和流纹岩.

The greatest dangers of pyroclastic avalanches are probably heat and suffocation.

火成碎屑崩落的最大危害可能是炽热和窒息作用.

Periods of volcanism are indicated by the presence of pyroclastic material in the formation.

群系中火成碎屑物的存在表明了火山酌的形成年代.

Pengxian copper deposit is hosted by metamorphosed pyroclastic rock and basic intermediate lava.

彭县铜矿床含矿火山岩由各类变质火山碎屑岩及中基性熔岩所组成.

Pyroclastic Lamination-Maintains cool temperature in extreme heat.

火山层压 - 保持冷静,体温在极热.

R . Schmidt ﹐ Descriptive Nomenclature & Classification of Pyroclastic Deposits & Fragments ﹐ Recomendation of IUGS Subcommision on the Systematics of Igneous Rocks ﹐ Geology ﹐ Vol.9﹐5﹐1981.

孙善平 ﹕国内外火山碎屑岩的分类、命名 、 历史及现状﹐《地球科学》﹐卷12﹐6﹐1987.

Schmidt ? Descriptive Nomenclature & Classification of Pyroclastic Deposits & Fragments ? Recomendation of IUGS Subcommision on the Systematics of Igneous Rocks ? Geology ? Vol.9? 5 ? 1981.

孙善平? 国内外火山碎屑岩的分类、命名 、 历史及现状? 《地球科学》? 卷12? 6? 1987.