Massive Sulphide Deposits Related to the Volcano-Passive Continental Margin in the Altay Region

查看全文 作　　者：WANG [1]Jingbin;DENG [1]Jiniu;ZHANG [1]Jinhong;QIN [1]Kezhang

机构地区：[1]Beijing Institute of Geology for Mineral Resources, State Bureau of Nonferrous Metal Industry, Andingmenwai, Beijing 100012

出　　处：《Acta Geologica Sinica(English Edition)》索引1999年第73卷第3期,共11页

摘　　要：The Devonian volcano-passive continental margin in southern Altay is a significant volcanogenic massive sulphide metallogenic belt. Acidic volcanism has been dominant on the inner side of the volcano-passive continental margin, i.e., near the old land, resulting in a Pb-Zn metallogenic sub-belt, in which the ore deposits are hosted by sedimentary rocks in volcanic series, as represented by the large Koktal Pb-Zn deposits. In the central part of the margin far away from the old land, bimodal volcanic formations are well developed, forming volcanics-hosted Cu-Zn metallogenic sub-belts, e.g., the large-scale Ashele Cu-Zn deposit. The Qiaoxiahala sub-belt on the outer side of the margin near the ocean ridge is located at the spreading central trough, where ophiolite suites are developed. This type of deposits is rich in gold and copper, similar to the Cyprus-type Fe-Cu-Au metallogenic sub-belt in metallogenic environment (represented by the Qiaoxiahala medium-scale Fe-Cu-Au deposit). From the old land to 关键词：volcano-passive CONTINENTAL MARGIN MASSIVE SULPHIDE deposit ALTAY type Xinjiang

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Massive Sulphide Deposits Related to the Volcano-Passive Continental Margin in the Altay Region

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