A combined modelling and geochemical study of the fate of terrigenous inputs from mixed natural and mining sources in a coral reef lagoon (New Caledonia)
Open-cast mining for Ni, Cr and Co was conducted in the south-west part of New Caledonia during the 20th century. Abandoned mining and prospecting sites were severely affected by erosion, resulting in all increase in the load of terrigenous particles transported to the coral reef lagoon. This articl...
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ftird:oai:ird.fr:fdi:010035604 2023-05-15T17:10:14+02:00 A combined modelling and geochemical study of the fate of terrigenous inputs from mixed natural and mining sources in a coral reef lagoon (New Caledonia) Fernandez, Jean-Michel Ouillon, Sylvain Chevillon, Christophe Douillet, Pascal Fichez, Renaud Le Gendre, Romain 2006 http://www.documentation.ird.fr/hor/fdi:010035604 EN eng http://www.documentation.ird.fr/hor/fdi:010035604 oai:ird.fr:fdi:010035604 Fernandez Jean-Michel, Ouillon Sylvain, Chevillon Christophe, Douillet Pascal, Fichez Renaud, Le Gendre Romain. A combined modelling and geochemical study of the fate of terrigenous inputs from mixed natural and mining sources in a coral reef lagoon (New Caledonia). Marine Pollution Bulletin, 2006, 52 (3), p. 320-331. open cast mining Ni Cr geochemistry sedimentology hydrodynamics New Caledonia text 2006 ftird 2020-08-21T07:00:50Z Open-cast mining for Ni, Cr and Co was conducted in the south-west part of New Caledonia during the 20th century. Abandoned mining and prospecting sites were severely affected by erosion, resulting in all increase in the load of terrigenous particles transported to the coral reef lagoon. This article assesses the impact of a typical small catchment area (La Coulee River, 85 km 2 watershed) oil two bays (Boulari and Sainte Marie) located near Noumea, New Caledonia's main city. This multi-disciplinary study combines geochemical, sedimentological, and hydrodynamic approaches. Ni and Cr concentrations contained in the geochemical matrix phase of the pelitic fraction were determined. The study of the geochemical signatures together with sedimentological data and 3D numerical simulations of the transport of non-settling particles throughout the lagoon demonstrated that terrigenous inputs from the Coulee River were mainly transported and deposited along the shoreline, reaching areas as distant as Sainte Marie Bay. Although quantitatively low (about 3% of the pelite mass of the bay sediments), the terrigenous inputs in Sainte Marie Bay originating from the Coulee River could be traced. The metal content in Suspended matter was over 7000 mg kg(-1) for Ni and 4200 mg kg-1 for Cr. (c) 2005 Elsevier Ltd. All rights reserved. Text Marie Bay IRD (Institute de recherche pour le développement): Horizon Marie Bay ENVELOPE(-115.345,-115.345,76.216,76.216) |
institution |
Open Polar |
collection |
IRD (Institute de recherche pour le développement): Horizon |
op_collection_id |
ftird |
language |
English |
topic |
open cast mining Ni Cr geochemistry sedimentology hydrodynamics New Caledonia |
spellingShingle |
open cast mining Ni Cr geochemistry sedimentology hydrodynamics New Caledonia Fernandez, Jean-Michel Ouillon, Sylvain Chevillon, Christophe Douillet, Pascal Fichez, Renaud Le Gendre, Romain A combined modelling and geochemical study of the fate of terrigenous inputs from mixed natural and mining sources in a coral reef lagoon (New Caledonia) |
topic_facet |
open cast mining Ni Cr geochemistry sedimentology hydrodynamics New Caledonia |
description |
Open-cast mining for Ni, Cr and Co was conducted in the south-west part of New Caledonia during the 20th century. Abandoned mining and prospecting sites were severely affected by erosion, resulting in all increase in the load of terrigenous particles transported to the coral reef lagoon. This article assesses the impact of a typical small catchment area (La Coulee River, 85 km 2 watershed) oil two bays (Boulari and Sainte Marie) located near Noumea, New Caledonia's main city. This multi-disciplinary study combines geochemical, sedimentological, and hydrodynamic approaches. Ni and Cr concentrations contained in the geochemical matrix phase of the pelitic fraction were determined. The study of the geochemical signatures together with sedimentological data and 3D numerical simulations of the transport of non-settling particles throughout the lagoon demonstrated that terrigenous inputs from the Coulee River were mainly transported and deposited along the shoreline, reaching areas as distant as Sainte Marie Bay. Although quantitatively low (about 3% of the pelite mass of the bay sediments), the terrigenous inputs in Sainte Marie Bay originating from the Coulee River could be traced. The metal content in Suspended matter was over 7000 mg kg(-1) for Ni and 4200 mg kg-1 for Cr. (c) 2005 Elsevier Ltd. All rights reserved. |
format |
Text |
author |
Fernandez, Jean-Michel Ouillon, Sylvain Chevillon, Christophe Douillet, Pascal Fichez, Renaud Le Gendre, Romain |
author_facet |
Fernandez, Jean-Michel Ouillon, Sylvain Chevillon, Christophe Douillet, Pascal Fichez, Renaud Le Gendre, Romain |
author_sort |
Fernandez, Jean-Michel |
title |
A combined modelling and geochemical study of the fate of terrigenous inputs from mixed natural and mining sources in a coral reef lagoon (New Caledonia) |
title_short |
A combined modelling and geochemical study of the fate of terrigenous inputs from mixed natural and mining sources in a coral reef lagoon (New Caledonia) |
title_full |
A combined modelling and geochemical study of the fate of terrigenous inputs from mixed natural and mining sources in a coral reef lagoon (New Caledonia) |
title_fullStr |
A combined modelling and geochemical study of the fate of terrigenous inputs from mixed natural and mining sources in a coral reef lagoon (New Caledonia) |
title_full_unstemmed |
A combined modelling and geochemical study of the fate of terrigenous inputs from mixed natural and mining sources in a coral reef lagoon (New Caledonia) |
title_sort |
combined modelling and geochemical study of the fate of terrigenous inputs from mixed natural and mining sources in a coral reef lagoon (new caledonia) |
publishDate |
2006 |
url |
http://www.documentation.ird.fr/hor/fdi:010035604 |
long_lat |
ENVELOPE(-115.345,-115.345,76.216,76.216) |
geographic |
Marie Bay |
geographic_facet |
Marie Bay |
genre |
Marie Bay |
genre_facet |
Marie Bay |
op_relation |
http://www.documentation.ird.fr/hor/fdi:010035604 oai:ird.fr:fdi:010035604 Fernandez Jean-Michel, Ouillon Sylvain, Chevillon Christophe, Douillet Pascal, Fichez Renaud, Le Gendre Romain. A combined modelling and geochemical study of the fate of terrigenous inputs from mixed natural and mining sources in a coral reef lagoon (New Caledonia). Marine Pollution Bulletin, 2006, 52 (3), p. 320-331. |
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1766066793744433152 |