Data-Driven Multi-Index Overlay Gold Prospectivity Mapping Using Geophysical and Remote Sensing Datasets

作者

Eric Dominic Forson¹ , David Dotse Wemegah² , Godfred Bright Hagan¹ , Desmond Appiah³ , Fortune Addo-Wuver³ , Isaac Adjovu⁴ , Frank Osae Otchere² , Said Mateso⁵ , Aboagye Menyeh² , Theophilus Amponsah²

1. University of Ghana
2. Kwame Nkrumah University of Science and Technology, Kumasi-Ghana
3. University of Education Winneba
4. Geodita Resources Limited, Accra-Ghana
5. Department of Environmental Engineering and Management, The University of Dodoma, Tanzania

会议/活动

IAST industry-academia conference, Legon-Accra, Ghana, April 2022 (University of Ghana, Legon-Accra, Ghana)

海报摘要

In this study, prospective zones of gold mineralization occurrences over the southern Kibi-Winneba belt have been delineated. This was preceded by using the prediction-area (P-A) plot by the generation of intersection points of prediction rate indicators that were essential in obtaining the normalized densities, which were subsequently used in generating the objective weight for each evidential layer in a data-driven way. The P-A and the normalized density techniques used were vital in recognizing the indicator and non-indicator criteria. The results obtained acknowledged the potassium concentration layer as a non-indicator of gold mineralization within the study area and subsequently recognized the hydroxyl concentration layer as the most plausible indicator criteria among the five indicator criteria (lineament density, iron concentration, hydroxyl concentration, gravity anomaly and magnetic anomaly) used. The indicator criteria were then integrated to generate a mineral prospectivity map (MPM) over the study area.

关键词

Data-driven approach, Normalized density, Evidential layer, Prediction-area plots, Logistic Function,, Multi-index overlay

研究领域

Remote Sensing, Earth Sciences, Statistics, Physics

参考文献

1. Klemd, R., Hnken, U., & Olesch, M. (2002). Metamorphism of the country rocks hosting gold?sulfide-bearing quartz veins in the Paleoproterozoic southern Kibi-Winneba belt (SE-Ghana). Journal of African Earth Sciences, 35(2), 199- 211
2. Cheng, Q., Agterberg, F. P., & Ballantyne, S. B. (1994). The separation of geochemical anomalies from background by fractal methods. Journal of Geochemical exploration, 51(2), 109-130.
3. Yousefi, M., & Carranza, E. J. M. (2015). Prediction?area (P?A) plot and C?A fractal analysis to classify and evaluate evidential maps for mineral prospectivity modeling. Com- puters & Geosciences, 79, 69-81.

基金

暂无数据

补充材料

暂无数据

附加信息

利益冲突

No competing interests were disclosed.

数据可用性声明

The datasets generated during and / or analyzed during the current study are available from the corresponding author on reasonable request.

知识共享许可协议

Copyright © 2022 Forson et al. This is an open access work distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.