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斜长岩

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Composed mainly of anorthosite and plagiogranite, the leucocratic rocks show distinct Eu positive anomaly.

浅色岩类的岩石类型包括斜长岩和斜长花岗岩,它们均呈岩块状包裹于蛇纹岩中。

SHRIMP zircon U-Pb ages of gabbro, anorthosite, and plagiogranite from the ophiolitic complex, and related marginal granite in the Jinshajiang area, provides important geochronological constraints for the oceanic spreding, the subduction and final collision, therefore, which constructs a time framework for the Jinshajiang Paleo-Tethys evolution.

应用SHRIMP方法测定了金沙江蛇绿岩中的各类辉长岩,斜长岩,斜长花岗岩,及沿金沙江带分布的陆缘型花岗岩的年龄,提供了洋壳形成,俯冲消减和碰撞造山事件等古特提斯演化的重要的同位素地质年代学制约,从而建立了金沙江古提斯演化的年代格架。

Pyroxene grains in gabbroic anorthosite,troctolite,microporphyritic crystalline impact melt breccia,and Ti-bearing clasts are mainly low-Ca pigeoniteEn_(63Fs_(32)Wo_5,En_(66)Fs_(23)Wo_(11),En_(55)Fs_(38)Wo_7,and En_(57)Fs_(35) Wo_8,respectively,and those in anorthositie gabbro,gabbro,and the matrix display a wide range of compositionEn_(31~33Fs_(35~48) Wo_(19~34),En_(18~48)Fs_(23~51)Wo_(24~38)+En_(1~9)Fs_(65~86)Wo_(14~26),En_(11~53)Fs_(23~63)Wo_(6~36),respectively,mainly occurring as pigeonite,augite, and trace amounts of pyroxferroite.

辉长质斜长岩、橄长岩、微斑熔融角砾岩等岩屑和含钛玻屑中的辉石相对贫钙,主要为易变辉石(分别为En63 FS32 WO5,En66FS23WO11,En55FS38Wo7和En57FS35WO8),而斜长岩质辉长岩和辉长岩岩屑中的辉石和晶屑辉石的成分变化比较大(分别为En31~33 FS35~48 WO19~34,En18~48 FS23~51 WO24~38+En1~9 FS65~86 WO14~26和En11~53 FS23~63WO6~36),为易变辉石和普通辉石,以及少量三斜铁辉石。

Dhofar 1180 is a basalt-bearing feldspathic lunar breccia,containing various types of lithic clasts(gabbro,anorthositic gabbro,gabbroic anorthosite,troctolite,and microporphyritic crystalline impact melt breccia).

该陨石含有辉长岩、斜长岩质辉长岩、辉长质斜长岩、橄长岩和微斑熔融角砾岩等多种类型岩屑,同时还存在含钛玻屑和长石质玻屑。

Below 1100℃, the amount of argon released from irradiated samples is in an order of: plagioclase rock>striped migmatite>granite>garnetiferous mica schist>calciummuddy shale>basalt.

在1100℃之前,辐照样释放的氩气量按顺序排列为:斜长岩>条带状混合岩>花岗岩>含石榴石云母片岩>钙泥质页岩>玄武岩。

Pyroxenite or anortlesite partings a fraction of an inch to 2 feet in thickness and tens of feet to hundreds of feet in length are also present in many seams.

在许多矿层中还见到辉岩或斜长岩夹层,厚几分至2尺,长几十到几百尺。

Any of a common rock-forming series of triclinic feldspars, consisting of mixtures of sodium and calcium aluminum silicates.

斜长岩三斜晶长石系列中一种普通的成岩石,由钠和钙铝硅酸盐组成

Any of a common rock - forming series of triclinic feldspar s,consisting of mixtures of sodium and calcium aluminum silicates.

斜长岩三斜晶长石系列中一种普通的成岩石,由钠和钙铝硅酸盐组成

Any of a common rock - forming series of triclinic feldspars,consisting of mixtures of sodium and calcium aluminum silicate s.

斜长岩三斜晶长石系列中一种普通的成岩石,由钠和钙铝硅酸盐组成

Composed mainly of anorthosite and plagiogranite, the leucocratic rocks show distinct Eu positive anomaly.

浅色岩类的岩石类型包括斜长岩和斜长花岗岩,它们均呈岩块状包裹於蛇纹岩中。

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