气体的碳、氦同位素资料表明其来自长英质岩浆体系；
C and O isotopic data demonstrate that these gases are derived from the felsic magma system;
长英质片麻岩是太古宙变质杂岩区最主要的岩石类型。
Felsic gneiss is the most widely distributed rock type in Archean metamorphic complex areas.
在组分活性方面，镁铁质组分比长英质组分的活动更为明显。
As to the activity of the components, the mafic component is more active than the felsic component.
矿床的成矿时间、空间及其成因与长英质次火山岩关系密切；
The metallogenic time, space and genesis of the ore deposit is related closely to felsicsubvolcanic rocks.
长英质矿物早于黑云母和石榴子石结晶与岩浆侵位浅（结晶压力低）相关。
Earlier crystallization of felsic minerals than biotite and garnet is related with much lower crystallization pressure.
榴辉岩的主体围岩是长英质片麻岩，它与榴辉岩不是相同高压变质作用的产物。
Both the eclogite and the felsic gneiss have not undergone the same high-pressure metamorphic event.
榴辉岩的主体围岩是长英质片麻岩，它与榴辉岩不是相同高压变质作用的产物。
Both the eclogite and the felsic gneiss have not undergone the same high - pressure metamorphic event.
在东秦岭前寒武系变质岩中，发育了许多Z字型叠加褶皱。它们是由近直立的片麻岩和长英质脉形成的。
Z-shaped superposed folds formed by nearly vertical gneiss and feldspar-quartz veins are widely developed in East Qinling Precambrian metamorphic rocks.
在东喜马拉雅构造结南迦巴瓦岩群中，石榴辉石岩呈透镜状产于麻粒岩相变质的长英质片麻岩和泥质片岩之中。
Garnet pyroxenite occurs as lenses in granulite-facies metamorphic granitic gneiss and pelitic schist in the Namjagbarwa Group-complex of the eastern Himalayan tectonic syntaxis.
这类熔体参与变质反应不仅受控于温压条件，而且与寄主岩石脱水熔融、长英质矿物部分熔融存在密切成因关系。
These reactions involving melt are not only controlled by PT conditions, but also genetically associated with dehydration melting, partial melting of felsic minerals in host rocks.
结果表明：宁村瓷石主要由长英质矿物组成，铁元素主要以硅酸盐矿物，硫化物和氧化物及氢氧化物等形式存在；
The results of composition analyses show that Ningcun china stone is mainly composed of quartz, sericite and feldspar; iron is contained in silicate, sulphide, oxide and hydroxide minerals.
长石石英云母片岩、石英岩和大理岩的原岩为沉积岩，与副变质的长英质片麻岩和基性火山岩—起构成了古老的表壳岩组合。
The quartz-mica schist, quartzite and marble were metamorphosed sedimentary rocks, and, together with paragneiss and mafic rock, constituted the old supracrustal series.
泰山地区阜平期片麻岩由英云闪长质片麻岩、奥长花岗质片麻岩组成，呈北西向带状分布，形成于角闪岩相温压环境，岩石普遍具片麻状构造，局部地区岩石的韧性作用比较强烈。
The Fuping-time gneiss in the Taishan area, consisting of tonalite gneiss and trondhjemite, formed in NW zonal distribution in the amphibolite -facies temperature and pressure environment.
长 英 质 的变种照例具有中等至伟晶的粒度。
Aplitic varieties are the rule, with the grain size ranging from medium to pegmatitic.
长 英 质 的变种照例具有中等至伟晶的粒度。
Aplitic varieties are the rule, with the grain size ranging from medium to pegmatitic.
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