The Delineation of Copper Geochemical Blocks and the Identification of Ore-Related Anomalies Using Singularity Analysis of Stream Sediment Geochemical Data in the Middle and Lower Reaches of the Yangtze River and Its Adjacent Areas, China

The middle and lower reaches of the Yangtze River and its adjacent areas contain abundant mineral resources, especially porphyry–skarn–stratabound Cu–Au–Mo–Fe deposits, and still have great potential for mineral prospecting. In this paper, geochemical blocks and local singularity mapping methods wer...

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Bibliographic Details
Published inMinerals (Basel) Vol. 13; no. 11; p. 1397
Main Authors Liu, Bin, Cui, Xingtao, Wang, Xueqiu
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.11.2023
Subjects
Analysis
Anomalies
China
Copper
Copper ores
Creeks & streams
Deposits
Distribution patterns
Exploration
Fault lines
Fluvial deposits
geochemical block
Geochemistry
Geology
Gold
Mapping
Mineral deposits
Mineral exploration
Mineral resources
Mineralization
Ore deposits
ore-related anomalies
Rivers
Sediments
Sediments (Geology)
Singularities
singularity analysis
Spatial distribution
the middle and lower reaches of the Yangtze River
United Kingdom
United Kingdom
China
Yangtze River
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Summary:The middle and lower reaches of the Yangtze River and its adjacent areas contain abundant mineral resources, especially porphyry–skarn–stratabound Cu–Au–Mo–Fe deposits, and still have great potential for mineral prospecting. In this paper, geochemical blocks and local singularity mapping methods were used to delineate the spatial distribution pattern of Cu and identify the geochemical anomalies related to Cu deposits. Six copper geochemical blocks, each with an area of more than 1000 km2, were all spatially consistent with the locations of the five Cu ore districts (Edongnan, Jiurui, Anqing-Guichi, Tongling, and Ningzhen) and one ore field (Dexing) in the study area. Thus, geochemical blocks delineated with low-density geochemical data can effectively track the locations of ore districts or large ore deposits. Most of the known Cu deposits in the study area were located in anomalous areas with singularity indices less than 1.741 in the Cu singularity map. The singularity analysis could reduce the anomalous areas and identify the geochemical anomalies related to Cu deposits effectively. Geochemical blocks combining a local singularity mapping method is an effective tool for identifying prospecting targets.
ISSN:2075-163X
2075-163X
DOI:10.3390/min13111397