云南勐海地区1∶5万水系沉积物地球化学特征及找矿预测

GEOCHEMICAL CHARACTERISTICS OF 1∶50 000 STREAM SEDIMENT SURVEY AND PROSPECTING PREDICTION IN MENGHAI AREA,YUNNAN PROVINCE

卢文姬 ¹孔祥超 ²张永三 ¹蓝信杰 ¹王明波 ¹付世兴 ¹张其凯¹

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作者信息

1. 中国冶金地质总局山东正元地质勘查院,山东济南 250000
2. 山东省第三地质矿产勘查院,山东烟台 264000
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摘要

勐海地区处于临沧-勐海(岩浆弧)Fe-Pb-Zn-Au-Ag-Sn-Sb-Ge-REE矿带,具有较好的找矿前景.在勐海地区1∶5万水系沉积物测量基础上,对区内29种元素分布特征、元素相关性、地球化学参数特征研究,圈定了 5个组合异常和13个综合异常.其中,Ce-La-Y-Zr综合异常具有较好找矿前景;Au、As、Sb、Hg、W、P等元素离散程度较高,元素局部较富集,具有成矿的可能性.结合水系沉积物测量成果,圈定找矿远景区2处,为下一步找矿工作提供了地球化学依据.

Abstract

Menghai area is located in Lincang-Menghai(magmatic arc)Fe-Pb-Zn-Au-Ag-Sn-Sb-Ge-REE metallogenic belt,with a good prospecting potential.Based on the regional 1∶50 000 stream sediment survey,the distribution characteristics,element correlation and geochemical parameter characteristics of 29 elements are studied,and 5 composite anomalies and 13 comprehensive anomalies are delineated in the area.Among them,the Ce-La-Y-Zr comprehensive anomaly has a good prospecting potential.The elements of Au,As,Sb,Hg,W and P are highly dispersed and locally enriched,with possibility of mineralization.Combined with the stream sediment survey results,2 prospecting potential areas are delineated,which may provide geochemical basis for the next prospecting work.

关键词

水系沉积物/地球化学异常/稀土元素/云南省

Key words

stream sediment/geochemical anomaly/rare earth element/Yunnan Province

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基金项目

中国地质调查局矿产地质调查项目(DD20179604-05)

出版年

2024

地质与资源

沈阳地质矿产研究所

地质与资源

CSTPCD

影响因子：0.357

ISSN：1671-1947

参考文献量20

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