| 王世权,叶萍,谭和勇,陈俊魁,霍清华.水系沉积物地球化学“弱小”异常研究——以嵩县幅Au元素异常为例[J].矿产勘查,2024,15(5):837-844 |
| 水系沉积物地球化学“弱小”异常研究——以嵩县幅Au元素异常为例 |
| Study on ‘weak’ anomaly of geochemical exploration by method of the anomaly threshold in geological subarea——Take the anomaly of Au element in Songxian ，Henan Province as an example |
| 投稿时间：2022-03-07 修订日期：2022-09-03 |
| DOI：10.20008/j.kckc.202405015 |
| 中文关键词: 外方山断隆 综合异常 异常下限衬值法 “弱小”异常 地球化学异常 嵩县地区 |
| 英文关键词: Waifangshan upfaulted belt composite anomaly method of the anomaly threshold ‘weak’ anomaly geochemical anomaly Songxian area |
| 基金项目:本文受河南省熊耳山—外方山地区金多金属矿整装勘查区矿产调查与找矿预测（121201004000160901-18）与河南省地质研究院科研项目（2023-903-XM007-KT01）联合资助。 |
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| 中文摘要: |
| 传统的化探数据处理方法全区常采用统一异常下限圈定异常，存在将异常扩大或者忽略“弱小”异常的缺点，笔者在河南省嵩县地区采用统一的异常下限圈定1∶5万水系沉积物测量综合异常，发现区内Au异常弱小、零散、规律性差。通过采用地质子区异常下限衬值法对区内化探数据重新处理，发现在研究区内存在多个“弱小”异常，这些异常沿主构造方向大致断续分布，具有一定的规律性。通过对“弱小”异常开展查证工作，最终在坡根、七峰山等地发现了多个金矿（化）体。证明在高背景地球化学异常地区采用地质子区异常下限衬值法圈定化探异常并指导找矿具有良好效果，研究成果可为下一步地质找矿工作提供依据。 |
| 英文摘要: |
| Songxian area is located in Waifangshan upfaulted belt， which is in an important molybdenum-gold metallogenic belt in the southern margin of North China Block. The anomaly of Au element in the study area has a high background value， and the unified anomaly lower limit is adopted to delineate the comprehensive anomaly measured by 1∶50，000 stream sediment. The Au element in the study area is unusually weak， scattered and irregular. Through the reprocessing of geochemical data by using the lower limit contrast method of anomalies in geological sub-areas， it is found that there are several weak and weak Au anomalies in the area and they are distributed discontinuously along the main tectonic direction. Au element anomaly verification work of ‘weak’， Finally， several gold deposits （mineralization） bodies were discovered in Pogen and Qifengshan， in the high background geochemical anomaly areas using geological area threshold contrast method delineated geochemical anomalies and guide the prospecting work has good effect， the research achievenent for further geological prospecting work have provided the certain basis. |
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