| 河西走廊成矿带区域成矿规律及找矿方向 |
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| 关键词:minerogenetic series of mineral deposits metallogenic regularity prospecting direction metallogenic belt Hexi corridor |
| 基金项目:中国地质调查局项目“中国矿产地质志”(编号: DD20221695; DD20190379; DD20160346);“祁连-秦岭铜镍钴金战略性矿产调查评价”项目(编号: DD20230334) |
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| Metallogenic Regularity and Prospecting Direction in the Hexi Corridor Metallogenic Belt, China |
| The Hexi corridor metallogenic belt is a III-level metallogenic unit distributed in the north of the Qilian region (national number III-20). There are 235 mineral deposits in this metallogenic belt, comprising more than 40 types of minerals, including petroleum, coal, attapulgite clay, fluorite, gypsum, mirabilite, limestone, quartz sand, iron, copper, gold, and tungsten. The major mineralization process is sedimentation, followed by hydrothermalism, magmatism, metamorphism, and supergenesis. These deposits can be divided into 11 types, and the main metallogenic periods are Variscan, Caledonian, Yanshanian, and Himalayan. This metallogenic belt can be further divided into two metallogenic sub-belts: Yumen-Minle and Shandan-Zhongwei-Jingyuan. According to the coupling relationship of the four elements of tectonic space, metallogenic time, mineralization, and mineral species, 10 minerogenetic series of mineral deposits have been determined in the Hexi corridor metallogenic belt, including four minerogenetic series of mineral deposits related to sedimentation, three minerogenetic series of mineral deposits related to hydrothermalism, one minerogenetic series of mineral deposits related to magmatism,one minerogenetic series of mineral deposits related to metamorphism, and one minerogenetic series of mineral deposits related to supergenesis. By subdividing metallogenic periods and mineralization, 16 minerogenetic subseries of mineral deposits and 47 deposit types were established. Based on the geological, mineral, ge-ophysical, geochemical, and remote sensing information, five comprehensive prediction areas were delineated in the Hexi corridor metallogenic belt, which provide a direction for future prospecting work. |
| ZHAO Guo-bin,YANG He-qun,YU Ji-yuan,TAN Wen-juan,ZHAO Min,YU Chao,ZHU Yong-xin,AI Ning,XIANG Lian-ge.2023.Metallogenic Regularity and Prospecting Direction in the Hexi Corridor Metallogenic Belt, China[J].Acta Geoscientica Sinica,44(4):660-672. |
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