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角斑岩

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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。

In addition, dacite porphyry injected into the lower part of the Huanghuashan breccia is dated by using the 40Ar/39Ar method, which has a plateau age of 122.1± 0.3Ma and an isochrone age of 121.8 ±1.4Ma.

通过Ar-Ar方法测年,测得了黄花山角砾岩层的下部岩石中灌入的英安斑岩的年龄,其坪年龄为(122.1±0.3) Ma,等时线年龄为(121.8±1.4) Ma。

Located in Songxian Henan province, the Leimengou Mo-mineralized granite porphyry is a small stock with an exposed area of 0.77 km~2, which emplaced in the metamorphic rocks of Taihua Group.

雷门沟钼矿化花岗斑岩体位于河南省嵩县境内,呈一小岩株状侵位于太华群变质岩系中,出露面积约0.77km~2,在其接触带具有爆发角砾岩。

Bovid related to goats but having antelope-like features: mountain goats; gorals; serows; chamois; gnu goats.

与山羊有关的牛科动物,外形象羚羊;石山羊;喜马拉雅斑羚;鬣羚;岩羚羊;扭角羚。

Ore deposit, have been studied detailly; the orebody pattern (sedimental bedded ores combined with stringer ores of hydrothermal origin) is also outlined; four metallogenic epoches are devided; the zoning of mineralization (including zones of ores, elements, mineral assemblages and temperature of mineralization) have been depicted; the main types of wall-rock alteration are characterized as propylitization of basic rocks and pyritization-sericitization-silicification of acidic pyroclastic rocks; the origin of ores and seven kinds of main minerals have been studied; and the metamorphism and deformation of orebodies is thought mainly due to the shearing and the intrusion of subvolcanic rocks

研究了七个矿化带特别是I号矿床的矿床地质特征,描绘了矿体的双层结构(沉积矿石与热液充填交代的细网脉状矿石),划分了四个成矿期次,区分了矿化分带(包括矿石组构的成因分带、元素分带、矿物组合分带、温度分带),指出了围岩蚀变的主要特征是细碧岩青盘岩化而石英角斑质凝灰岩黄铁绢英岩化;对矿石及七种主要矿石矿物的成因作了研究;探讨了矿体的变质、变形,指出韧性剪切及次火山岩侵入的热力作用和应力作用是导致矿体变质变形的主要原因

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