Potential contamination of stream waters by ultramafic mining sediments: Identification of geochemical makers (New Caledonia)
| Autor: | Nazha Selmaoui-Folcher, Aurélie Boula, Christine Laporte-Magoni, Olivier Bour, Peggy Gunkel-Grillon |
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| Přispěvatelé: | Université de la Nouvelle-Calédonie (UNC), Institut de sciences exactes et appliquées (ISEA), Géosciences Rennes (GR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Centre National de la Recherche Scientifique (CNRS), Image & Pervasive Access Lab (IPAL), National University of Singapore (NUS)-MATHEMATIQUES, SCIENCES ET TECHNOLOGIES DE L'INFORMATION ET DE LA COMMUNICATION (UJF)-Agency for science, technology and research [Singapore] (A*STAR)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institute for Infocomm Research - I²R [Singapore], CNRT (Centre National de Recherche Technologique) Nickel & Environment in New Caledonia, Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), National University of Singapore (NUS)-Agency for science, technology and research [Singapore] (A*STAR)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institute for Infocomm Research - I²R [Singapore], Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES) |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Geochemistry
ultramafic complexes STREAMS 010501 environmental sciences 01 natural sciences surface waters Geochemistry and Petrology Ultramafic rock [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology 0105 earth and related environmental sciences geography geography.geographical_feature_category dissolved metal concentration 04 agricultural and veterinary sciences Massif total metal concentration 6. Clean water hydrogeochemical background machine learning Soil water [SDE]Environmental Sciences 040103 agronomy & agriculture Erosion 0401 agriculture forestry and fisheries Environmental science Economic Geology Metalloid Surface runoff Sediment transport |
| Zdroj: | Journal of Geochemical Exploration Journal of Geochemical Exploration, Elsevier, 2022, 232, pp.106879. ⟨10.1016/j.gexplo.2021.106879⟩ Journal of Geochemical Exploration, 2022, 232, pp.106879. ⟨10.1016/j.gexplo.2021.106879⟩ |
| ISSN: | 0375-6742 |
| DOI: | 10.1016/j.gexplo.2021.106879⟩ |
| Popis: | International audience; The ultramafic massifs of New Caledonia are mainly composed of regolites with lateritic soils rich in metals such as Co, Fe, Mg and Ni. The nickeliferous ore is exploited by opencast mines. After rainfalls, erosion and particle runoff cause the mobilization of metals and metalloids in surface waters. The objective of this study is (i) to determine the geochemical background of metals and metalloids in surface waters draining a mining ultramafic massif, (ii) to identify the geochemical markers influenced by the mining of nickeliferous ore (iii) and to define discriminant values of the mining impact. Hydrochemical monitoring was carried out on five streams draining the Koniambo massif over a 15-years period. Twenty-four elements were analyzed for their total concentration and 18 for their dissolved concentration ( |
| Databáze: | OpenAIRE |
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