FN Archimer Export Format
PT J
TI Origin and Composition of Ferromanganese Deposits of New Caledonia Exclusive Economic Zone
BT 
AF Staszak, Paul
   Collot, Julien
   Josso, Pierre
   Pelleter, Ewan
   Etienne, Samuel
   Patriat, Martin
   Cheron, Sandrine
   Boissier, Audrey
   Guyomard, Yaël
AS 1:1,2;2:1;3:3;4:2;5:1;6:2;7:2;8:2;9:1;
FF 1:PDG-REM-GM-LAD;2:;3:;4:PDG-REM-GEOOCEAN-CYBER;5:;6:PDG-REM-GEOOCEAN-ALMA;7:PDG-REM-GEOOCEAN-CYBER;8:PDG-REM-GEOOCEAN-CYBER;9:;
C1 Geological Survey of New Caledonia, Direction de l’Industrie, des Mines et de l’Énergie de Nouvelle-Calédonie, BP M2, Nouméa 98845, New Caledonia
   Institut Français de Recherche pour l’Exploitation de la Mer (IFREMER), Unité Géosciences Marines, 29280 Plouzané, France
   British Geological Survey, Environmental Science Centre, Nottingham NG12 5GG, UK
C2 DIMENC SERV GEOL NOUVELLE CALEDONIE, FRANCE
   IFREMER, FRANCE
   BRITISH GEOL SURVEY, UK
SI NOUMEA
   BREST
SE PDG-REM-GM-LAD
   PDG-REM-GEOOCEAN-CYBER
   PDG-REM-GEOOCEAN-ALMA
UM GEO-OCEAN
IN WOS Ifremer UMR
   DOAJ
   copubli-france
   copubli-europe
IF 2.5
TC 4
UR https://archimer.ifremer.fr/doc/00751/86344/91665.pdf
   https://archimer.ifremer.fr/doc/00751/86344/91666.zip
LA English
DT Article
CR BATHUS 3
   EBISCO
   ECO GEORSTOM III
   EVA 76/1
   EVA 76/2
   GEORSTOM II
   GEORSTOM III EST
   GEORSTOM III NORD
   GEORSTOM III SUD
   IPOD
   KANADEEP 1
   KANADEEP 2
   VESPA
BO Alis
   Le Noroit
   Coriolis
   L'Atalante
DE ;ferromanganese crusts;New Caledonia;hydrogenetic;hydrothermal and diagenetic deposits
AB Located in the South-West Pacific, at the northern extremity of the mostly submerged Zealandia continent, the New Caledonian Exclusive Economic Zone (EEZ) covers 1,470,000 km² and includes basins, ridges and seamounts where abundant ferromanganese crusts have been observed. Several investigations have been conducted since the 1970s on the nature and composition of ferromanganese crusts from New Caledonia’s seamounts and ridges, but none have covered the entire EEZ. We present data from 104 ferromanganese crusts collected in New Caledonia’s EEZ during twelve oceanographic cruises between 1974 and 2019. Samples were analysed for mineralogy, geochemical compositions, growth rates, and through a statistical approach using correlation coefficients and factor analysis. Crust thicknesses range from 1 mm to 115 mm, with growth rates between 0.45 mm/Ma and 102 mm/Ma. Based on textures, structures, discrimination plots, and growth rates, we distinguish a group of hydrogenetic crusts containing the highest mean contents of Co (0.42 wt%), Ni (0.31 wt%), and high contents of Mo, V, W, Pb, Zn, Nb, from a group of hydrothermal and/or diagenetic deposits showing high mean contents of Mn (38.17 wt%), Ba (0.56 wt%) and low contents of other trace metals. Several samples from this later group have exceptionally high content of Ni (0.7 wt%). The data shows that crusts from the southern part of the EEZ, notably seamounts of the Loyalty Ridge and the Lord Howe Rise, present high mineral potential for prospectivity owing to high contents of valuable metals, and constitute a great target for further investigation. 
PY 2022
PD FEB
SO Minerals
SN 2075-163X
PU MDPI AG
VL 12
IS 2
UT 000762562000001
DI 10.3390/min12020255
ID 86344
ER

EF