Identification of the geochemical anomalies using the catchment basin analysis: A case study of 1∶50000 geochemical survey of stream sediments in Wulasitai region, East Kunlun Orogenic Belt
Geochemical survey of stream sediments is an effective technology for mineral prospecting. The extraction of geochemical anomalies in stream sediments based on catchment basins has always been one of the research hotspots.The catchment basin analysis method is proposed based on Sample Catchment Basi...
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| Format: | Article |
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Editorial Department of Bulletin of Geological Science and Technology
2023-01-01
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| Series: | 地质科技通报 |
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| Online Access: | https://dzkjqb.cug.edu.cn/en/article/doi/10.19509/j.cnki.dzkq.2021.0093 |
| _version_ | 1797277559916855296 |
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| author | Xiaokun Huang Junhao Wei Wenjie Shi Xinming Zhang Qiang Gao Shuang Wang |
| author_facet | Xiaokun Huang Junhao Wei Wenjie Shi Xinming Zhang Qiang Gao Shuang Wang |
| author_sort | Xiaokun Huang |
| collection | DOAJ |
| description | Geochemical survey of stream sediments is an effective technology for mineral prospecting. The extraction of geochemical anomalies in stream sediments based on catchment basins has always been one of the research hotspots.The catchment basin analysis method is proposed based on Sample Catchment Basin Analysis (SCBA)in this paper, and it is used to identify geochemical anomalies in the Wulasitai region, East Kunlun Orogenic Belt in Qinghai Province.Catchment basins are divided by a high-precision DEM, and the Au, Ag, and Pb factor loadings of 1∶50000 stream sediments are measured by the catchment basin analysis. During the extraction process, a variety of geomorphic parameters such as main stream slope, relief ratio, catchment basin area, are used as the sediment delivery ratios for residual correction calculation, and the geochemical background and anomalies are separated by the C-A fractal modeling. The anomaly extraction results show that the area of the catchment basin is the most suitable parameter as the sediment delivery ratio to participate in the downstream attenuation correction. The catchment basin method can effectively identify and extract geochemical anomaly information.Anomalies correspond well to the spatial location of ore deposits, and can provide beneficial information for the next step of mineral prospecting. |
| first_indexed | 2024-03-07T15:50:11Z |
| format | Article |
| id | doaj.art-37b5b48e0f7044619e7464f2a2cf1272 |
| institution | Directory Open Access Journal |
| issn | 2096-8523 |
| language | zho |
| last_indexed | 2024-03-07T15:50:11Z |
| publishDate | 2023-01-01 |
| publisher | Editorial Department of Bulletin of Geological Science and Technology |
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| series | 地质科技通报 |
| spelling | doaj.art-37b5b48e0f7044619e7464f2a2cf12722024-03-05T02:56:00ZzhoEditorial Department of Bulletin of Geological Science and Technology地质科技通报2096-85232023-01-0142132433810.19509/j.cnki.dzkq.2021.0093dzkjtb-42-1-324Identification of the geochemical anomalies using the catchment basin analysis: A case study of 1∶50000 geochemical survey of stream sediments in Wulasitai region, East Kunlun Orogenic BeltXiaokun Huang0Junhao Wei1Wenjie Shi2Xinming Zhang3Qiang Gao4Shuang Wang5School of Earth Resources, China University of Geosciences(Wuhan), Wuhan 430074, ChinaSchool of Earth Resources, China University of Geosciences(Wuhan), Wuhan 430074, ChinaSchool of Earth Resources, China University of Geosciences(Wuhan), Wuhan 430074, ChinaSchool of Earth Resources, China University of Geosciences(Wuhan), Wuhan 430074, ChinaSchool of Earth Resources, China University of Geosciences(Wuhan), Wuhan 430074, ChinaSchool of Earth Resources, China University of Geosciences(Wuhan), Wuhan 430074, ChinaGeochemical survey of stream sediments is an effective technology for mineral prospecting. The extraction of geochemical anomalies in stream sediments based on catchment basins has always been one of the research hotspots.The catchment basin analysis method is proposed based on Sample Catchment Basin Analysis (SCBA)in this paper, and it is used to identify geochemical anomalies in the Wulasitai region, East Kunlun Orogenic Belt in Qinghai Province.Catchment basins are divided by a high-precision DEM, and the Au, Ag, and Pb factor loadings of 1∶50000 stream sediments are measured by the catchment basin analysis. During the extraction process, a variety of geomorphic parameters such as main stream slope, relief ratio, catchment basin area, are used as the sediment delivery ratios for residual correction calculation, and the geochemical background and anomalies are separated by the C-A fractal modeling. The anomaly extraction results show that the area of the catchment basin is the most suitable parameter as the sediment delivery ratio to participate in the downstream attenuation correction. The catchment basin method can effectively identify and extract geochemical anomaly information.Anomalies correspond well to the spatial location of ore deposits, and can provide beneficial information for the next step of mineral prospecting.https://dzkjqb.cug.edu.cn/en/article/doi/10.19509/j.cnki.dzkq.2021.0093catchment basinstream sedimentgeochemical characteristicsgeochemical anomalygeochemical residual correctionconcentration-area fractal analysiseast kunlun orogenic beltwulasitai region |
| spellingShingle | Xiaokun Huang Junhao Wei Wenjie Shi Xinming Zhang Qiang Gao Shuang Wang Identification of the geochemical anomalies using the catchment basin analysis: A case study of 1∶50000 geochemical survey of stream sediments in Wulasitai region, East Kunlun Orogenic Belt 地质科技通报 catchment basin stream sediment geochemical characteristics geochemical anomaly geochemical residual correction concentration-area fractal analysis east kunlun orogenic belt wulasitai region |
| title | Identification of the geochemical anomalies using the catchment basin analysis: A case study of 1∶50000 geochemical survey of stream sediments in Wulasitai region, East Kunlun Orogenic Belt |
| title_full | Identification of the geochemical anomalies using the catchment basin analysis: A case study of 1∶50000 geochemical survey of stream sediments in Wulasitai region, East Kunlun Orogenic Belt |
| title_fullStr | Identification of the geochemical anomalies using the catchment basin analysis: A case study of 1∶50000 geochemical survey of stream sediments in Wulasitai region, East Kunlun Orogenic Belt |
| title_full_unstemmed | Identification of the geochemical anomalies using the catchment basin analysis: A case study of 1∶50000 geochemical survey of stream sediments in Wulasitai region, East Kunlun Orogenic Belt |
| title_short | Identification of the geochemical anomalies using the catchment basin analysis: A case study of 1∶50000 geochemical survey of stream sediments in Wulasitai region, East Kunlun Orogenic Belt |
| title_sort | identification of the geochemical anomalies using the catchment basin analysis a case study of 1∶50000 geochemical survey of stream sediments in wulasitai region east kunlun orogenic belt |
| topic | catchment basin stream sediment geochemical characteristics geochemical anomaly geochemical residual correction concentration-area fractal analysis east kunlun orogenic belt wulasitai region |
| url | https://dzkjqb.cug.edu.cn/en/article/doi/10.19509/j.cnki.dzkq.2021.0093 |
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