Regional Hydrogeochemical Mapping for Environmental Studies in the Mineralized Lom Basin, East Cameroon: A Pre-industrial Mining Survey
Hydrology
Volume 5, Issue 2, March 2017, Pages: 15-31
Received: Apr. 19, 2017; Accepted: Apr. 27, 2017; Published: Jun. 26, 2017
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Authors
Mumbfu Ernestine Mimba, Department of Chemistry, School of Science and Technology, Tokai University, Hiratsuka, Japan; Institute of Geological and Mining Research (IRGM), Yaounde, Cameroon
Takeshi Ohba, Department of Chemistry, School of Science and Technology, Tokai University, Hiratsuka, Japan
Salomon César Nguemhe Fils, Institute of Geological and Mining Research (IRGM), Yaounde, Cameroon
Mengnjo Jude Wirmvem, Institute of Geological and Mining Research (IRGM), Yaounde, Cameroon
Edith Etakah Bate Tibang, Institute of Geological and Mining Research (IRGM), Yaounde, Cameroon
Melvin Tamta Nforba, School of Geology and Mining Engineering, University of Ngaoundere, Ngaoundere, Cameroon
Festus Togwa Aka, Institute of Geological and Mining Research (IRGM), Yaounde, Cameroon
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Abstract
The present study is the first appraisal of regional hydrogeochemical programme for environmental assessment of the mineralized Lom Basin in East Cameroon. Fifty-two streamwater samples were collected and analysed for major cations (Ca2+, Mg2+, Na+, K+) and major anions (HCO3, F–, Cl, NO2, NO3, Br, PO43–, SO42–). Calcium and HCO3 were the dominant ions. The chemical facies for the surface water were CaHCO3 and NaHCO3 types indicating a fresh water source. Major ion geochemistry demonstrated the potential to discriminate between natural and anthropogenic origins. Calcium ion, Mg2+, Na+, K+and HCO3 had similar distribution trends reflecting weathering from the parent rocks. Sulphate distribution correlated with the occurrence of sulphide minerals associated with hydrothermal gold mineralization in the area while the distribution patterns of NO3and Cl reflected pollution from domestic activities within the municipality. Overall, the chemistry of stream water in the Lom Basin is mainly controlled by silicate weathering with only minor anthropogenic influence. This study forms an analogue for hydrogeochemical mapping in other mineralized terrains in Cameroon.
Keywords
Hydrogeochemical Survey, Major Ions, Provenance, Lom Basin, Cameroon
To cite this article
Mumbfu Ernestine Mimba, Takeshi Ohba, Salomon César Nguemhe Fils, Mengnjo Jude Wirmvem, Edith Etakah Bate Tibang, Melvin Tamta Nforba, Festus Togwa Aka, Regional Hydrogeochemical Mapping for Environmental Studies in the Mineralized Lom Basin, East Cameroon: A Pre-industrial Mining Survey, Hydrology. Vol. 5, No. 2, 2017, pp. 15-31. doi: 10.11648/j.hyd.20170502.11
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Copyright © 2017 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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