| 汤正纲.秦岭泥盆系层控多金属成矿带简介[J].矿产勘查,2025,16(S2):34-37 |
| 秦岭泥盆系层控多金属成矿带简介 |
| Introduction to the devonian stratabound polymetallic metallogenic belt in Qinling Orogen |
| 投稿时间：2025-05-27 |
| DOI：10.20008/j.kckc.2025s2005 |
| 中文关键词: 秦岭成矿带 区域变质改造 金属分带规律 秦岭型金矿 |
| 英文关键词: Qinling metallogenic belt regional metamorphic modification metallic zoning pattern Qinling-type gold deposit |
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| 摘要点击次数: 28 |
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| 中文摘要: |
| 本文研究了沿秦岭主峰两侧分布的甘肃临潭—陕西丹凤多金属成矿带。该带构造上属拗拉谷环境，形成于海西—印支期(D2-T2)产出铁、铜、铅锌、汞锑、金、银等大、中型矿床 20余处。研究表明，所有矿床均为海底热泉喷流沉积成因，成，矿时代集中在中泥盆世( =3. 7~3. 8亿年)后期经历了不同程度的区域变质改造。根据沉积环境，矿床可分为滨岸潟湖型、广海台地型、浅海洼地型、陆，棚缓坡型和喷口型 5类。成矿受深大断裂控制，金属元素具有明显的时空分异规律，表现为 Fe-Cu(Ag)-PbZn(Ag)-Au-Sb-Hg-As的分布序列。该认识对区域找矿具有指导意义，并提出本区金矿可命名为“秦岭型金矿”。 |
| 英文摘要: |
| This paper studies the polymetallic metallogenic belt distributed along the northern side of the mainpeak of the Qinling Mountains，from Lintan，Gansu to Danfeng，Shaanxi. Structurally，the belt belongs to an aulacogen environment formed during the Hercynian-Indosinian period(D2-T2)，hosting over 20 large and medium-sized deposits of iron，copper，lead-zinc，mercury-antimony，gold，silver，and other metals. Research indicates that all deposits are of submarine hydrothermal exhalative sedimentary origin，with the main mineralization occur. ring in the Middle Devonian(approximately 370-380 million years ago)， followed by varying degrees of regional metamorphic modification. Based on sedimentary environments，the deposits are classified into five types:coastal lagoon type，open marine platform type，shallow marine depression type，continental shelf gentle slope type，and vent type. Mineralization is controlled by deep-seated faults，and the metallic elements exhibit distinct spatial-temporal differentiation， following a distribution sequence of Fe-Cu(Ag)-PbZn(Ag)-Au-Sb-Hg-As. This understanding provides guidance for regional prospecting，and it is proposed that the gold deposits in this area be named the "Qinling-type gold deposit". |
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