Advantages and Disadvantages in Delineating Geochemical Anomalies by Lithologic Zoning Anomaly Based on Lower Limit Contrast Method: A Case Study in Jinshan, Jiangsu Province

YANG Yongbiao; CAO Jifei; WANG Lijuan; HUANG Shunsheng

doi:10.12401/j.nwg.2024024

Northwestern Geology > 2024 > 57(6): 318-325. > DOI: 10.12401/j.nwg.2024024

YANG Yongbiao，CAO Jifei，WANG Lijuan，et al. Advantages and Disadvantages in Delineating Geochemical Anomalies by Lithologic Zoning Anomaly Based on Lower Limit Contrast Method: A Case Study in Jinshan, Jiangsu Province[J]. Northwestern Geology，2024，57（6）：318−325. doi: 10.12401/j.nwg.2024024

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Advantages and Disadvantages in Delineating Geochemical Anomalies by Lithologic Zoning Anomaly Based on Lower Limit Contrast Method: A Case Study in Jinshan, Jiangsu Province

1.
Geological Survey of Jiangsu Province, Nanjing 210018, Jiangsu, China
2.
Research Center for Resources Engineering Towards Carbon Neutrality of Jiangsu, Nanjing 210018, Jiangsu, China
3.
Xi’an Center of China Geological Survey, Xi’an 710119, Shaanxi, China

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Received Date: December 14, 2022
Revised Date: July 24, 2023
Accepted Date: August 27, 2023
Available Online: March 19, 2024

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Abstract

Abstract

Based on the data of geochemical soil surveys at the scale of 1∶10000 in Jinshan, geochemical anomalies were delineated by lower limit on lithological zone in the study. Compared to traditional methods, it can effectively avoid the control of lithology on the anomaly and eliminate the influence of geological background. Moreover, geochemical anomalies, delineated by lower limit, can provide more effective information in prospecting. Through field exploration and anomaly verification, as well as trenching and drilling verification of key anomalies with prospecting significance, industrial valuable tungsten ore bodies and lead-zinc ore veins were discovered. It suggest that lithology zoning anomaly lower limit contrast method is viable in areas with complex lithology, and therefore can be widely used.

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Advantages and Disadvantages in Delineating Geochemical Anomalies by Lithologic Zoning Anomaly Based on Lower Limit Contrast Method: A Case Study in Jinshan, Jiangsu Province