Articles | Volume 7, issue 2
SOIL, 7, 743–766, 2021
https://doi.org/10.5194/soil-7-743-2021
SOIL, 7, 743–766, 2021
https://doi.org/10.5194/soil-7-743-2021

Original research article 22 Nov 2021

Original research article | 22 Nov 2021

Combining colour parameters and geochemical tracers to improve sediment source discrimination in a mining catchment (New Caledonia, South Pacific Islands)

Virginie Sellier et al.

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Cited articles

Abel, A., Michael, A., Zartl, A., and Werner, F.: Impact of erosion-transported overburden dump materials on water quality in Lake Cospuden evolved from a former open cast lignite mine south of Leipzig, Germany, Environmental Geology, 39, 683–688, 2000. 
Batista, P. V. G., Laceby, J. P., Silva, M. L. N., Tassinari, D., Bispo, D. F. A., Curi, N., Davies, J., and Quinton, J. N.: Using pedological knowledge to improve sediment source apportionment in tropical environments, J. Soils. Sediments, 19, 3274–3289, https://doi.org/10.1007/s11368-018-2199-5, 2018. 
Bird, E. C. F., Dubois, J. P., and Iltis, J. A.: The impacts of opencast mining on the rivers and coasts of New Caledonia, Tokyo, Japan, United Nations University, 60 pp., 1984. 
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Short summary
Open-cast mining increases soil erosion and transfer of sediment in river systems. Providing a methodology to better understand the sediment dynamic of these catchments is essential to manage this pollution. In this study, different tracers such as elemental geochemistry or colour properties were tested to trace and quantify the mining source contributions to the sediment inputs in the Thio River catchment, one of the first areas exploited for nickel mining in New Caledonia (i.e. since 1880).