They settle to the bottom of the chamber, leaving the remaining magma enriched in silica and aluminum- from which dacites emerge.
它们沉到岩浆库的底部，因此，剩馀的岩浆富含矽和铝，石英安山岩即从中生成。
SHRIMP Zicon U-Pb Dating and Its Geological Implication for the Xiangshan Porphyric Dacite-Rhyolitic
相山流纹英安斑岩锆石SHRIMP U-Pb年龄及地质意义
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.
PETROFABRIC ANALYSIS OF A SMALL VIEN-QUARTZ FOLD IN THE QUARTZ-MICA SCHIST IN WUTAI,SHANSI
山西五台石英云母片岩中石英脉岩小褶?的岩?分析
The rock assemblages of the Bayinbuluke formation are mainly alkaline basalt-thick andesite-alkaline rhyolite.
火山岩岩石组合以碱性玄武岩-粗安岩-碱性流纹岩为主.
The petrology of ultrahigh-pressure eclogite-facies rocks in the proximity of Shima, Taihu County, Anhui Province, China;
安徽太湖县石马超高压榴辉岩相岩石的岩石学研究(英文)
A gray, fine - grained volcanic rock, chiefly plagioclase and feldspar.
安山岩一种灰色的，纹理细密的火山岩，主要是斜长石和似长石
The petrology,mineralogy and geochemistry study of the Huangshan granite intrusion in Anhui Province.
安徽黄山花岗岩岩石学、矿物学及地球化学研究
A TEM Study of Deformed Quartz and Garnet in the Mafic Granulite from the Southern Tianshan,China
南天山基性麻粒岩中变形石英和石榴子石的TEM研究
Experimental research on the swelling stress of limestone in the second coal mine of Tian'an,Pingdingshan city
平顶山天安二矿石灰岩膨胀应力的试验研究
Origin of Late Mesozoic Volcanic Rocks from the Southern Da Hinggan Mountain,NE China(Ⅱ):Constraints of Pb Isotope
南兴安岭晚中生代火山岩的岩石成因(Ⅱ):Pb同位素制约
Lithification of Dawsonite-Bearing Sandstone in the Qingshankou Formation in the Qian'an Oil Field of the South Songliao Basin
松辽盆地南部乾安油田青山口组含片钠铝石砂岩的成岩作用
Quartzite at the bottom of the second formation of the Langshan Group is the result of silicification.
狼山群第2岩组底部的石英岩是硅化作用的产物。
A volcano shoots out flame and rocks.
火山喷出火焰和岩石。
a climber of vertical rock faces.
直接攀登岩石的登山者。
bound down the hillside
(岩石)从山坡上滚下来
Rocks rolled down the hillside.
岩石沿着山坡滚下来。
The ridgy rock, the woods that crown its steep,
参天的岩石，山麓的树木，