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| 柴北缘前震旦纪地层系统的新认识 | |
| 引用本文： | 辛后田,郝国杰,王惠初,陈能松,韩英善,祁生胜.柴北缘前震旦纪地层系统的新认识[J].地质调查与研究,2002,25(2):113-119. |
| 作者姓名： | 辛后田 郝国杰 王惠初 陈能松 韩英善 祁生胜 |
| 作者单位： | 1. 天津地质矿产研究所,天津,300170 2. 中国地质大学,武汉,武汉,400037 3. 青海省地质调查院,西宁,800036 |
| 基金项目： | 国土资源大调查项目(20011300062、20001300010081) |
| 摘 要： | 柴北缘的变质基底具有复杂的岩石组成,除成因迥异的多期变质深成侵入体外,还包括变质程度不同的表壳岩。南带的沙柳河、鱼卡河等地出露大理岩、石英岩、含石榴石片岩和条带状斜长角闪岩等以副变质岩为主的表壳岩系,共同构成了中元古界沙柳河岩群;而出露在北带全吉山、德令哈等地的中高级变质表壳岩系,则为形成于古元古代并具有较强的钾质混合岩化的达肯大坂岩群。柴北缘的榴辉岩分布在南带,除以规模较小的透镜体状赋存于新元古代花岗片麻岩中外,还和沙柳河岩群共生,但在北带的达肯大坂岩群中没有出现。全吉群的时代为南华纪至震旦纪。 |
| 关 键 词： | 柴北缘 前震旦纪 沙柳河岩群 达肯大坂岩群 榴辉岩 |
| 文章编号： | 1007-6956(2002)02-0113-07 |
| 修稿时间： | 2002年2月18日 |
New Idea on Presinian Strata in the Northern Margin of Qaidam Massif |
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| XIN Hou-tian,HAO Guo-jie,WANG Hui-chu,CHEN Neng-song,HAN ying-shan,QI Sheng-sheng.New Idea on Presinian Strata in the Northern Margin of Qaidam Massif[J].Geological Survey and Research,2002,25(2):113-119. | |
| Authors: | XIN Hou-tian HAO Guo-jie WANG Hui-chu CHEN Neng-song HAN ying-shan QI Sheng-sheng |
| Institution: | XIN Hou-tian1,HAO Guo-jie1,WANG Hui-chu1,CHEN Neng-song2,HAN ying-shan3,QI Sheng-sheng3, |
| Abstract: | There is very complicated composition in the metamorphic basement of the Northern Margin of Qaidam Massif. It includes multi-metamophic plutons and metamorphic crust. In the south part of the area appear marble, quartzite garnet-bearing schist, banded-plagioamphibolite and other paragneiss system and they are named ShaLiuhe Grupe. ln Quanjishan and Delingha area appear mid-high-metamophic crust system with extensive potassic migmatization, which formed in paleo-proterozoic and named DaKendaban Grorp.The eclogite in Qaidam is distributed only in the south part as small lens rounded by granite-gneiss, and some of them are in Shaliuhe Group. The age of Quanji Group is about from Nanhua to Sinian period. |
| Keywords: | Pre sinian strata eclogite northern margin of Qaidam China |
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