| 蔡雄威,刘海,刘林,徐志华,李小伟,程林.湖北长阳矿集区"大塘坡式"锰矿主控因素与成矿模式[J].地质找矿论丛,2025,40(2):175-188 |
| 湖北长阳矿集区"大塘坡式"锰矿主控因素与成矿模式 |
| Key controlling factors and metallogenic model of the "Datangpo Type" Mn deposits in the Changyang ore deposit cluster area, Hubei Province |
| 投稿时间：2024-11-11 修订日期：2025-04-29 |
| DOI：10.6053/j.issn.1001-1412.2025.02.005 |
| 中文关键词: “大塘坡式”锰矿 主控因素 成矿模式 长阳矿集区 湖北省 |
| 英文关键词:“Datangpo type” manganese ore deposits main control factors metallogenic model Changyang ore deposit cluster area Hubei Province |
| 基金项目:湖北省重点研发项目、湖北省地质联合基金重点项目和湖北省科技发展专项(编号分别为:2024BCB098、2025AFD433、42000024205T000000140)联合资助。 |
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| 中文摘要: |
| 长阳矿集区是湘西-鄂西成矿带上优质锰矿资源的重要产区。该区锰矿床属南华系"大塘坡式"锰矿,近年来,区内整装勘查虽然取得了锰矿找矿工作的突破,然而对区内锰矿控矿因素与成矿模式研究尚不深入,制约了深部及外围进一步找矿勘查及相关研究工作。依托整装勘查最新进展并结合前人研究成果,通过对矿床地质特征及稳定同位素特征等数据的分析总结,探讨了主控因素和成矿模式,总结出"海底火山活动和陆源物质提供的锰质来源为成矿基础、地层岩性为成矿必要条件、相对稳定的局限浅海陆棚盆地相沉积环境为成矿保存富集的关键、深大断裂控制锰矿的空间分布与形态"为该区锰矿富集的四大主控因素。初步建立了长阳地区"大塘坡式"锰矿的成矿模式,厘清了成矿要素次序,指出跑马坪盆地西部的凹陷盆地隐伏区是下一步寻找锰矿的最有利方向。这对"大塘坡式"锰矿的后续研究和进一步找矿勘查具有重要的借鉴和参考作用。 |
| 英文摘要: |
| The Changyang ore deposit cluster area is an important resource area of high-quality Mn ore in the Western Hunan-Western Hubei metallogenic belt. The Mn deposits here belong to the "Datangpo type" Mn deposits in Nanhua System. In recent years,integrated exploration of Mn ore in this area has achieved breakthroughs. However,research on the ore-controlling factors and metallogenic model has not deepened so as to restricting the further Mn ore prospecting and related research works both in depth and in the surroundings. Based on the latest progress of integrated exploration and previous data, the main controlling factors and metallogenic model are discussed by analyzing and summarizing the geological characteristics and stable isotope characteristics of the deposit. It is concluded that:Mn is derived from submarine volcanic activity and terrigenous materials; the lithology of the strata is a necessary ore-forming condition; a relatively stable sedimentary environment in a limited shallow sea shelf basin is a prerequisite for Mn ore preservation and enrichment;deep faults control the spatial distribution and morphology of manganese ore. The metallogenic model is preliminarily established and the order of metallogenic factors is clarified. Further Mn ore prospecting would be directed to the concealed area of depression basin in the west of Paomaping basin. |
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