Contrasted hydrothermal activity along the S outh‐ E ast I ndian R idge (130°E–140°E): From crustal to ultramafic circulation
作者: Cédric BoulartAnne BriaisValérie ChavagnacSidonie RévillonGeorges CeuleneerJean‐Pierre DonvalVivien GuyaderFabienne BarrereNicolas FerreiraBarry HananChristophe HémondSarah MacleodMarcia MaiaAgnès MaillardSergey MerkuryevSung‐Hyun ParkEtienne RuellanAlexandre SchohnSally WatsonYun‐Seok Yang
作者单位: 1IFREMER, Géosciences Marines Plouzané France
2 Géosciences Environnement Toulouse, UMR5563 CNRS/UPS/IRD/CNES Toulouse France
3 Sedisor ‐ Laboratoire Domaines Océaniques, IUEM Brest France
4 CNRS, Domaines Océaniques, Institut Univ. Européen de la Mer Plouzané France
5 Department of Geological Sciences San Diego State University San Diego California USA
6 School of Geological Sciences University of Sydney Sydney New South Wales Australia
7 IZMIRAN St Petersburg Russia
8 Korea Polar Research Institute Incheon South Korea
9 IMAS, University of Tasmania Hobart Tasmania Australia
刊名: Geochemistry, Geophysics, Geosystems, 2017, Vol.18 (7), pp.2446-2458
来源数据库: Wiley Journal
DOI: 10.1002/2016GC006683
关键词: hydrothermal plumesmid‐ocean ridgesSouth‐East Indian Ridge
原始语种摘要: Abstract(#br)Using a combined approach of seafloor mapping, MAPR and CTD survey, we report evidence for active hydrothermal venting along the 130°‐140°E section of the poorly‐known South‐East Indian Ridge (SEIR) from the Australia‐Antarctic Discordance (AAD) to the George V Fracture Zone (FZ). Along the latter, we report Eh and CH4 anomalies in the water column above a serpentinite massif, which unambiguously testify for ultramafic‐related fluid flow. This is the first time that such circulation is observed on an intermediate‐spreading ridge. The ridge axis itself is characterized by numerous off‐axis volcanoes, suggesting a high magma supply. The water column survey indicates the presence of at least ten distinct hydrothermal plumes along the axis. The CH4:Mn ratios...
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影响因子:2.939 (2012)

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