| 季亚旗,曾艾平,杨建中,陈炜,周安保,周久林.鄂西南鹤峰县官庄河地区地球化学特征及多金属找矿预测[J].贵州地质,2022,39(4):353-360 |
| 鄂西南鹤峰县官庄河地区地球化学特征及多金属找矿预测 |
| Geochemical Characteristics and Prediction of Polymetallic Ore Prospecting in Guanzhuanghe Area in Hefeng County，Southwest Hubei |
| 投稿时间：2022-08-17 |
| DOI： |
| 中文关键词: 鄂西南 水系沉积物测量 地球化学异常 多金属矿 |
| 英文关键词:Southwest Hubei Stream sediment survey Geochemical anomaly Polymetallic ore |
| 基金项目: |
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| 中文摘要: |
| 本文基于鄂西南鹤峰县官庄河地区已完成的水系沉积物地球化学测量工作成果，系统统计研究区内不同地质单元Cu、Pb、Zn、Ni等13种元素的含量、背景平均值、变异系数、浓集比率、富集系数等，研究了多金属元素组合异常特征，探讨成矿元素的地球化学异常对找矿勘查的地质意义。研究显示，区内Cu、Pb、Zn等10种元素富集系数高，分异度低，Au等3种元素属弱分异型字-分异型。Cu、Zn异常主要集中在娄山关组地层中，Au异常主要集中在石牌组和天河板组地层且与后期构造热液蚀变有关。通过组合异常分析，将研究区划分成3个多金属综合地球化学异常带，并圈出了官庄金异常区和麻旺三组铅锌异常区2个重点找矿区。通过异常查证，重点找矿区内存在菱锌矿等矿化现象。因此，地表水系沉积物测量地球化学异常可以有效地指导矿区找矿预测。 |
| 英文摘要: |
| Based on the results of river system sediment geochemical survey completed in Guanzhuanghe area in Hefeng county，Southwest HubeiIn this paper，it systematically counted the contents，background average values，variation coefficients，concentration ratios and enrichment coefficients of 13 elements such as Cu，Pb，Zn and Ni in different geological units in the study area，and studied the anomaly characteristics of polymetallic element combination，The geological significance of geochemical anomaly of ore-forming elements for prospecting and exploration was discussedThe study shows that 10 elements such as Cu，Pb and Zn in the area have high enrichment coefficients and low differentiation，and 3 elements such as Au belong to weak differentiation type - differentiation typeCu and Zn anomalies are mainly concentrated in the Loushanguan Formation，while Au anomalies are mainly concentrated in the Shipai Formation and Tianheban Formation and are related to the later tectonic hydrothermal alterationThrough the analysis of combined anomaly，the study area is divided into 3 polymetallic comprehensive geochemical anomaly zones，and 2 key prospecting areas，Guanzhuang gold anomaly zone and Mawang 3 group lead zinc anomaly zone，are delineatedThrough anomaly verification，there are mineralization phenomena such as smithsonite in the key prospecting areaTherefore，the geochemical anomaly of surface water sediment measurement can effectively guide the ore prospecting and prediction of the mining area |
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