Insights into the origin of ferromanganese-rich deposits associated with South China Sea contourite depositional systems

Zhong，Yi1,2,3,4,5; Chen，Zhong1,2; González，Francisco Javier6; Ortiz，Jose Eugenio7; Blanco，Lorena6; Marino，Egidio6; Liu，Qingsong1,4,5

2021-11-01

10.1016/j.marpetgeo.2021.105257

MARINE AND PETROLEUM GEOLOGY   影响因子和分区

0264-8172

Contourites are globally-distributed features along continental margins where deep-water masses come across the seafloor; however, the genesis and metal-sources of marine mineral deposits associated with contourite deposits remain largely unknown. Abundant Fe-rich nodules were recovered along the continental margin of the South China Sea, where extensive cold-seep systems were also discovered. We measured synthetically geochemical elements, δC, Sr and Nd isotopic data and organic proxies in Fe-oxy-hydroxide deposits from the upper and lower slope. Fe-rich nodules recovered from the upper slope represent the effect of an integrated diagenetic-hydrogenetic formation environment, in which fluid venting from deep-seated hydrocarbon reservoirs and deep-water erosion and chemistry could play an important role. In contrast, another kind of ferromanganese nodule forming along the lower slope and predominantly hydrogenetic is connected to a distinct deep-water flow from the North Pacific. These results give us a new insight into the mineralization processes associated with Fe oxidation-reduction processes on continental margins affected by contourite systems with abundant hydrocarbon seep, bottom water, and terrigenous inputs.

Contourite depositional systems Deep-water circulation Fluid venting Northern South China Sea Sr–Nd isotopes

SCI ; EI

英语

第一 ; 通讯

WOS:000698392000001

20213410809290

Economic geology ; Ferroalloys ; Flow of water ; Hydrocarbons ; Iron compounds ; Iron deposits ; Iron ores

Geology:481.1 ; Heavy Metal Mines:504.3 ; Iron:545.1 ; Iron Alloys:545.2 ; Liquid Dynamics:631.1.1 ; Organic Compounds:804.1

GEOSCIENCES

2-s2.0-85113279592

Scopus

1.Centre for Marine Magnetism (CM),Department of Ocean Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Key Laboratory of Ocean and Marginal Sea Geology,South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou,510301,China
3.Key Laboratory of Marine Geology and Environment,Institute of Oceanology,Chinese Academy of Sciences,Qingdao,266071,China
4.Laboratory for Marine Geology,Pilot National Laboratory for Marine Science and Technology (Qingdao),Qingdao,266071,China
5.Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou),Guangzhou,China
6.Marine Geology Dv.,Geological Survey of Spain (IGME),Madrid,28003,Spain
7.Laboratorio de Estratigrafía Biomolecular (ETSIM/UPM),Madrid,C/Ríos Rosas 21,28003,Spain

Zhong，Yi,Chen，Zhong,González，Francisco Javier,et al. Insights into the origin of ferromanganese-rich deposits associated with South China Sea contourite depositional systems[J]. MARINE AND PETROLEUM GEOLOGY,2021,133.

Zhong，Yi.,Chen，Zhong.,González，Francisco Javier.,Ortiz，Jose Eugenio.,Blanco，Lorena.,...&Liu，Qingsong.(2021).Insights into the origin of ferromanganese-rich deposits associated with South China Sea contourite depositional systems.MARINE AND PETROLEUM GEOLOGY,133.

Zhong，Yi,et al."Insights into the origin of ferromanganese-rich deposits associated with South China Sea contourite depositional systems".MARINE AND PETROLEUM GEOLOGY 133(2021).