| 初论尾祁秦缝合系 |
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| 引用本文：边千韬,赵大升,叶正仁,常承法,罗小全,高山林.2002.初论尾祁秦缝合系[J].地球学报,23(6):501-508. |
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| 基金项目:中国科学院知识创新工程重要方向项目（KZCX2-SW-119）；中国科学院卢嘉锡基金资助项目；国家自然科学基金（批准号:49872077和49572153） |
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| 中文摘要:中央造山带范围内的诸多新元古代晚期-早古生长代蛇绿岩带可视为一个系统--昆祁秦缝合系。大致可分西、中、东3段。西段包括库地-苏巴什和麻扎-康西瓦2条缝合带及西昆中微地块；中段包括阿尔金、北祁连、柴达木北缘、祁漫塔格-乌妥及东昆仑南缘5条缝合带和中-南祁连、柴达木、阿牙克库木及玛沁4个较大的微地块及诸多较小的微地块；东段为商丹缝合带和勉略缝合带及其所夹持的秦中-大别微地块。昆祁秦缝合是Rodinia超大陆经历了早-中震旦世（约780-600Ma）初期裂解阶段，晚震旦世-奥陶纪（约600-440Ma）昆祁秦多岛洋阶段，晚奥陶世一早志留纪（约440-400Ma）昆祁秦多岛洋闭合阶段形成的一个包含若干缝合带和若干个微地块的体系，是中央造山带的基础。 |
| 中文关键词:蛇绿岩 缝合系 新元古代-早古生代 中央造山带 |
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| A Preliminary Study of the Kunlun-Qilian-Qinling Suture System |
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| Abstract:The Late Neo-Proterozoic-Early Paleozoic suture zones within the Central Orogenic Belt of China can be considered a system-the Kunlun-Qilian-Qinling suture system (KQQ suture system). It is basically divided into the western, central and eastern sectors. The western sector consists of the Kuda-Subashi suture zone, the Mazha-Kangsiwar suture and the central West Kunlun mi-croblock. The central sector covers five suture zones, i. e. ,the Altun, North Qilian, Qaidam northern marginal,Qimantag-Wutuo and East Kunlun southern marginal sutures, in addition to some microblocks such as the mid-south Qilian, Qaidam, Ayakkum and Maqen microblocks. The eastern sector is composed of the Shangdan suture zone, Mianlue suture zone and central Qinling-Dabie microblock. The KQQ suture system experienced① extending-rifting of the Rodinia super-continent in the early-middle Sinian period (about 780 - 600 Ma±); ② the formation and evolution of the KQQ archipelagic ocean during the Late Sinian-Ordovician (about 600-440 Ma ± ); and ③ closing of the KQQ ocean and forming of the KQQ suture system during the Late Ordovician-Late Silurian ( about 440 - 400 Ma ±) . As a system comprising many suture zones and microblocks, the KQQ suture system constitutes the foundation of the Central Orogenic Belt of China. |
| keywords:ophiolite suture system Sinian-Early Paleozoic Central Orogenic Belt of China |
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