| 北祁连西段中元古代早期蛇绿岩的确定 |
| |
| 引用本文： | 左国朝,毛景文.北祁连西段中元古代早期蛇绿岩的确定[J].甘肃地质学报,1999,8(2):1-7. |
| |
| 作者姓名： | 左国朝 毛景文 |
| |
| 作者单位： | 甘肃省地勘局地质研究所!甘肃兰州730000(左国朝，吴茂炳)，地质矿产部矿床地质研究所!北京100037(毛景文)，地质矿产部地质研究所!北京100037(张招崇) |
| |
| 摘 要： | 北祁连西段朱龙关河—托来山北坡一带，希罕地保存着中元古代早期蛇绿岩带。该蛇绿岩带形成于下元古界北大河群古陆壳结晶基底上，由裂陷到裂谷，尔后演化为小洋盆所残留下来的洋壳残片。根据采自蛇绿岩中辉绿岩岩墙的３ 颗单颗粒锆石年龄测定值（１．７～１．８Ｇａ）信息，表明洋盆发育于中元古代早期。同时它还经历了沟、弧、盆体系发育过程。
|
| 关 键 词： | 中元古代早期 蛇绿岩 沟弧盆体系 北祁连西段 |
DEFINITION FOR EARLY MID PROTEROZOIC OPHIOLITE IN THE WEST PART OF NORTH QILIAN AREA AND PRELIMINARY DIVISION FOR ITS TECTONIC BELT |
| |
| ZUO Guo chao ,WU Mao bing ,MAO Jing wen ,ZHANG Zhao chong.DEFINITION FOR EARLY MID PROTEROZOIC OPHIOLITE IN THE WEST PART OF NORTH QILIAN AREA AND PRELIMINARY DIVISION FOR ITS TECTONIC BELT[J].Acta Geologica Gansu,1999,8(2):1-7. |
| |
| Authors: | ZUO Guo chao WU Mao bing MAO Jing wen ZHANG Zhao chong |
| |
| Institution: | ZUO Guo chao 1,WU Mao bing 1,MAO Jing wen 2,ZHANG Zhao chong 3 |
| |
| Abstract: | |
| |
| Keywords: | Early Mid Proterozoic Ophiolite Trench-arc-basin system West part of North Qilian area |
| 本文献已被 CNKI 维普 等数据库收录！ |
