Insights from modern diffuse-flow hydrothermal systems into the origin of post-GOE deep-water Fe-Si precipitates

Dong，Aiguo1; Sun，Zhilei2,3; Kendall，Brian4; Izon，Gareth5; Cao，Hong2,3; Li，Zhihong6; Ma，Xiaoming7,8; Yin，Xijie9; Qiu，Zhen10; Zhu，Xiang kun6; Bekker，Andrey11,12; Poulton，Simon W.13

2022-01-15

10.1016/j.gca.2021.10.001

GEOCHIMICA ET COSMOCHIMICA ACTA   影响因子和分区

0016-7037

1872-9533

Post-GOE deep-water Fe-Si precipitates associated with volcanogenic massive sulfide deposits are an important feature of the Proterozoic rock record. Although it is clear that these enigmatic deposits formed in oxygen-deficient and hydrothermally influenced deep-water settings, the oxidation mechanism(s) resulting in their precipitation remain(s) unclear. Whilst existing genetic models typically couple direct and/or bacterially-mediated iron oxidation with abiotic silica precipitation, low temperature diffuse hydrothermal fluids offer a potential mechanistic alternative to explain the observed layering. Herein, via combination of petrographic observations with elemental and isotopic data (Fe, Si, and O), we explore the genesis of the primary mineral phases present within recent Fe-Si precipitates obtained from the Southwest Indian Ridge. Formation of ferrihydrite and opal-A in these precipitates provides insight into the genesis of widely invoked precursor minerals to post-GOE deep-water Fe-Si precipitates. Specifically, we find that the mineralogical layers that typify these Fe-Si precipitates may have originated via biologically mediated ferrihydrite precipitation and abiotic precipitation of opal-A from oversaturated fluids during diffuse flow. By analogy, we propose that diffuse hydrothermal fluid flow played an important role in the formation of post-GOE deep-water Fe-Si precipitates.

Diffuse hydrothermal flow Fe-Si precipitates Iron formation Iron isotopes Silicon isotopes

SCI

英语

NI期刊

其他

Natural Science Foundation of China[42176057,41873027,91858208,41930320] ; National Key Basic Research and Devel-opment Program of China["2018YFC031000303","2017YFC0307704"] ; Open Foundation of Laboratory forMarine Mineral Resources, Pilot National Laboratory for Marine Science and Technology[MMRZZ201809] ; Open Research Foundation of the Key Laboratory of Deep-Earth Dynamics of Ministry of Natural Resources[J1901] ; NSERC Discovery Grant[RGPIN-435930]

Geochemistry & Geophysics

Geochemistry & Geophysics

WOS:000730124700001

PERGAMON-ELSEVIER SCIENCE LTD

GEOSCIENCES

2-s2.0-85118693316

Scopus

1.Institute of Earth Sciences,China University of Geosciences (Beijing),Beijing,100083,China
2.Laboratory for Marine Mineral Resources,Pilot National Laboratory for Marine Science and Technology,Qingdao,266071,China
3.The Key Laboratory of Gas Hydrate,Ministry of Natural Resources,Qingdao Institute of Marine Geology,Qingdao,266071,China
4.Department of Earth and Environmental Sciences,University of Waterloo,Waterloo,200 University Avenue West,N2L 3G1,Canada
5.Department of Earth,Atmospheric and Planetary Sciences,Massachusetts Institute of Technology,Cambridge,02139,United States
6.MNR Key Laboratory of Isotope Geology,MNR Key Laboratory of Deep-Earth Dynamics,Institute of Geology,Chinese Academy of Geological Sciences,Beijing,100037,China
7.Beijing National Laboratory for Condensed Matter Physics and Institute of Physics,Chinese Academy of Sciences,Beijing,100190,China
8.Department of Physics,South University of Science and Technology of China,Shenzhen,518055,China
9.Third Institute of Oceanography Ministry of Natural Resources,Xiamen,361005,China
10.Research Institute of Petroleum Exploration & Development,China National Petroleum Corporation,Beijing,100083,China
11.Department of Earth and Planetary Sciences,University of California,Riverside,92521,United States
12.Department of Geology,University of Johannesburg,Auckland Park,2006,South Africa
13.School of Earth and Environment,University of Leeds,Leeds,LS2 9JT,United Kingdom

Dong，Aiguo,Sun，Zhilei,Kendall，Brian,et al. Insights from modern diffuse-flow hydrothermal systems into the origin of post-GOE deep-water Fe-Si precipitates[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2022,317:1-17.

Dong，Aiguo.,Sun，Zhilei.,Kendall，Brian.,Izon，Gareth.,Cao，Hong.,...&Poulton，Simon W..(2022).Insights from modern diffuse-flow hydrothermal systems into the origin of post-GOE deep-water Fe-Si precipitates.GEOCHIMICA ET COSMOCHIMICA ACTA,317,1-17.

Dong，Aiguo,et al."Insights from modern diffuse-flow hydrothermal systems into the origin of post-GOE deep-water Fe-Si precipitates".GEOCHIMICA ET COSMOCHIMICA ACTA 317(2022):1-17.