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1.a metamorphic rock composed chiefly of amphibole and plagioclase.
一种主要由闪石和斜长岩组成的变质岩。收藏指正
2.Also found in the belt are phlogopite tremolite schist, biotite (-bearing) plagioclase amphibolite, dioritic gneiss, meta-quartz dioritic rock, fine-grained trondhjemite, adamellite, pegmatitic vein.
此外还有金云母透闪石岩、(含)黑云斜长角闪岩、闪长质片麻岩、变石英闪长质岩石、细粒奥长花岗岩、二长花岗岩、伟晶岩脉等。收藏指正
3.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收藏指正
4.A chiefly amphibole rock with minor plagioclase and little quartz.
角闪岩主要由角闪石、少量斜长石和石英组成的岩石收藏指正
5.A usually coarse-grained igneous rock composed chiefly of calcic plagioclase and pyroxene.
辉长岩一种主要由石灰生斜长岩和辉石构成的通常质地粗糙的火成岩收藏指正
6.An igneous rock composed chiefly of plagioclase and orthoclase, with small amounts of other minerals.
二长岩一种主要由斜长石和正长石组成的火成岩，还含有少量其它矿物收藏指正
7.The Geladandong intrusive body mainly consists of monzonitic granite, with the single zircon U_Pb age being 40±3 Ma, the Rb_Sr isochron age of the rock being 47±0.4 Ma, and the K_Ar ages of plagioclase, hornblende and biotite being 37.1 Ma, 45.8 Ma, 48 Ma, respectively. The rock body was formed in Eocene.
羌塘中部各拉丹冬岩体主要由二长花岗岩组成,其单颗粒锆石U-Pb年龄为40±3Ma,Rb-Sr等时线年龄为47±0·4Ma,斜长石、角闪石、黑云母K-Ar年龄分别为37·1Ma、48Ma和45·8Ma,形成于始新世。收藏指正
8.A hard, dense, dark volcanic rock composed chiefly of plagioclase, pyroxene, and olivine, and often having a glassy appearance.
玄武岩一种硬的、致密的、黑色的火山岩。它主要由斜长石、辉石和橄榄石组成，外表经常很光滑收藏指正
9.the commonest type of solidified lava; a dense dark gray fine-grained igneous rock composed chiefly of calcium-rich plagioclase feldspar and pyroxene.
最常见的凝固火山岩，是一种致密的深灰色火成岩，纹理细密，主要由富钙的斜长石和辉石组成。收藏指正
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