| 全吉地块花岗片麻岩中镁铁质岩包体的矿物演化和锆石定年与古元古代区域变质作用 |
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| 引用本文： | 张璐,廖梵汐,巴金,徐利盼,王勤燕,陈能松.全吉地块花岗片麻岩中镁铁质岩包体的矿物演化和锆石定年与古元古代区域变质作用[J].地学前缘,2011,18(2):79-84. |
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| 作者姓名： | 张璐 廖梵汐 巴金 徐利盼 王勤燕 陈能松 |
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| 作者单位： | 张璐,Zhang Lu(中国地质大学(武汉)地球科学学院,湖北,武汉,430074;中国地质大学(武汉)研究生院,湖北,武汉,430074);廖梵汐,巴金,徐利盼,王勤燕,Liao Fanxi,Ba Jin,Xu Lipan,Wang Qinyan(中国地质大学(武汉)地球科学学院,湖北,武汉,430074);陈能松,Chen Nengsong(中国地质大学(武汉)地球科学学院,湖北,武汉,430074;中国地质大学,地质过程与矿产资源国家重点实验室,湖北,武汉,430074) |
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| 摘 要： | 全吉地块中段古元古代早期的德令哈二长花岗片麻岩中发育一个来自围岩的变质镁铁质岩包体.该包体的岩性从核部到边缘依次为角闪斜长辉石岩、斜长角闪岩和石榴石角闪片岩.角闪斜长辉石岩的显微结构指示三个世代的矿物演化,世代Ⅰ为单斜辉石+棕绿色普通角闪石+斜长石+石英+钛铁矿,世代Ⅱ为蓝绿色普通角闪石+斜长石+石榴子石,世代Ⅱ为阳起...
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| 关 键 词： | 镁铁质岩包体 区域变质作用 锆石U-Pb定年 超大陆汇聚事件 全吉地块 |
Mineral evolution and zircon geochronology of mafic enclave in granitic gneiss of the Quanji Block and implications for Paleoproterozoic regional metamorphism. |
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| Zhang Lu,Liao Fanxi,Ba Jin,Xu Lipan,Wang Qinyan,Chen Nengsong.Mineral evolution and zircon geochronology of mafic enclave in granitic gneiss of the Quanji Block and implications for Paleoproterozoic regional metamorphism.[J].Earth Science Frontiers,2011,18(2):79-84. |
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| Authors: | Zhang Lu Liao Fanxi Ba Jin Xu Lipan Wang Qinyan Chen Nengsong |
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| Institution: | Zhang Lu1,2,Liao Fanxi1,Ba Jin1,Xu Lipan1,Wang Qinyan1,Chen Nengsong1,3,1.Faculty of Earth Sciences,China University of Geosciences(Wuhan),Wuhan 430074,China 2.Graduate School,China 3.State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,China |
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| Abstract: | A wall-rock-derived meta-mafic enclave was discovered in the Early-Paleoproterozoic Delingha monzogranitic gneiss in the middle part of the Quanji Block.The enclave includes three rocks,from the margin to the center,being hornblende plagioclase pyroxenite,amphibolite,and garnet-hornblende schist.Three generations of mineral assemblages have been identified from petrological evidence and microtextural relationship in the hornblende plagioclase pyroxenite.The generation I is of clinopyroxene+brownish green-ho... |
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| Keywords: | mafic enclave regional metamorphism zircon U-Pb dating assembly event of the Columbia supercontinent Quanji Block |
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