桂西南地区三叠系锰矿找矿模型构建与勘查示范
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本文为国家重点研发计划项目(编号2022YFC2903404)和中国冶金地质总局地质综合研究项目(编号 中冶地\[2025\]CMGBDZYJ001号)联合资助的成果


Construction of prospecting model and exploration demonstration for Triassic manganese deposits in southwest Guangxi
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    摘要:

    桂西南德保足荣- 天等东平地区是我国重要的锰矿矿集区,含锰地层为三叠系下统石炮组。区内尚有大量空白区,现处于攻深找盲阶段,但缺乏有效的找矿模型来指导锰矿勘查工作。本文在东平和扶晚两个典型锰矿床研究的基础上,在桂西南德保足荣- 天等东平成锰盆地内划分出东平、平尧、扶晚三个明显的聚锰凹槽。聚锰凹槽内碳酸锰矿层的厚度、Mn品位、矿石构造和含锰岩系厚度具明显的空间分布变化规律,按成矿作用强度由强到弱依次划分出中心带、过渡带和边缘带,在此基础上建立了找矿模型并开展勘查示范。优选出“地层- 岩性- 构造”地质测量法+多极化大地电磁测深法(MPMT法)与时分多极激电测深法(TDMIP法)联合探测+钻探验证的高效勘查技术方法组合,对桂西南地区三叠系锰矿找矿突破具有重要指导意义。

    Abstract:

    The Debao Zurong- Tiandeng Dongping area in southwestern Guangxi is an important manganese metallogenic district in China, with the primary manganese- bearing strata hosted by the lower Triassic Shipao Formation. Although significant unexplored potential remains in this region, current exploration is focused on deep- seated targets and concealed orebody searching; however, the district currently lacks an effective metallogenic model to guide these efforts. Based on studies of two representative manganese deposits (Dongping and Fuwan), this paper identifies three distinct manganese- rich troughs within the Dongping manganese- forming basin: Dongping, Pingyao, and Fuwan. Within these troughs, the thickness of the manganese carbonate ore layer, Mn grade, ore texture, and the overall thickness of the manganese- bearing succession exhibit clear spatial distribution patterns. Based on the intensity of mineralization from strong to weak, the area is divided into central, transition, and marginal zones. On this basis, a new prospecting model was established and tested through exploration demonstrations. An integrated exploration suite is proposed, combining “stratigraphy- lithology- structure” geological surveys with Multi- Polarization Magnetotelluric Sounding (MPMT) and Time- Domain Multi- Pole Induced Polarization Sounding (TDMIP), followed by drilling verification. This integrated approach provides significant guidance for achieving breakthroughs in Triassic manganese exploration in southwestern Guangxi.

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李荣志,江沙,龙鹏,龙涛,蒋新红,农良春,周尚国,黄钦,向胤合.2026.桂西南地区三叠系锰矿找矿模型构建与勘查示范[J].地质学报,100(2):708-722.
LI Rongzhi, JIANG Sha, LONG Peng, LONG Tao, JIANG Xinhong, NONG Liangchun, ZHOU Shangguo, HUANG Qin, XIANG Yinhe.2026. Construction of prospecting model and exploration demonstration for Triassic manganese deposits in southwest Guangxi[J]. Acta Geologica Sinica,100(2):708-722.

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  • 收稿日期:2025-04-30
  • 最后修改日期:2025-12-31
  • 录用日期:2026-01-04
  • 在线发布日期: 2026-02-12
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