Iron and sulfide nanoparticle formation and transport in nascent hydrothermal vent plumes

Download

index.pdf

Date

2019-04-08

Author

Findlay, Alyssa J.
Estes, Emily R.
Gartman, Amy
Yücel, Mustafa
Kamyshny, Alexey
Luther, George W.

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

132
views

50
downloads

Deep-sea hydrothermal vents are a significant source of dissolved metals to the global oceans, producing midwater plumes enriched in metals that are transported thousands of kilometers from the vent source. Particle precipitation upon emission of hydrothermal fluids controls metal speciation and the magnitude of metal export. Here, we document metal sulfide particles, including pyrite nanoparticles, within the first meter of buoyant plumes from three high-temperature vents at the East Pacific Rise. We observe a zone of particle settling 10-20 cm from the orifice, indicated by stable sulfur isotopes; however, we also demonstrate that nanoparticulate pyrite (FeS2) is not removed from the plume and can account for over half of the filtered Fe (<= 0.2 mu m) up to one meter from the vent orifice. The persistence of nanoparticulate pyrite demonstrates that it is an important mechanism for near-vent Fe stabilisation and highlights the potential role of nanoparticles in element transport.

Subject Keywords

East pacific rise, Pyrite fes2, Atlantic, Sulfur, Isotope, Fractionation, Precipitation, Geochemistry, Equilibria, Oxidation

URI

https://hdl.handle.net/11511/32313

Journal

NATURE COMMUNICATIONS

DOI

https://doi.org/10.1038/s41467-019-09580-5

Collections

Graduate School of Marine Sciences, Article

Suggestions

OpenMETU
Core

Hydrothermal vents as a kinetically stable source of iron-sulphide-bearing nanoparticles to the ocean Yücel, Mustafa; Chan, Clara S.; Luther, George W. (2011-06-01) Hydrothermal vents emit sulphur and metals to the ocean(1). Particular attention has been paid to hydrothermal fluxes of iron(2-4), a limiting micronutrient of marine primary production(5). Vent-derived iron was previously thought to rapidly oxidize and precipitate around vents(6). However, organic matter can bind to and stabilize dissolved and particulate iron in hydrothermal plumes(7-9), facilitating its dispersion into the open ocean(10). Here, we report measurements of the chemical speciation of sulphid...
Sulfur speciation in the upper Black Sea sediments Yücel, Mustafa; Moore, Tommy S.; Janzen, Christopher P.; Luther, George W. (2010-01-30) We report solid phase sulfur speciation of six cores from sediments underlying oxic, suboxic and anoxic-sulfidic waters of the Black Sea. Our dataset includes the five sulfur species [pyrite-sulfur, acid volatile sulfides (AVS), zerovalent sulfur (S(0)), organic polysulfides (RS(x)), humic sulfur] together with reactive iron and manganese, as quantified by dithionite extraction, and total organic carbon. Pyrite - sulfur was the major phase in all cores [200-400 mu mol (g dry wt)(-1)] except for the suboxic ...
Temporal trends in vent fluid iron and sulfide chemistry following the 2005/2006 eruption at East Pacific Rise, 9 degrees 50 ' N Yücel, Mustafa (2013-04-01) The chemistry of vent fluids that emanate to the seafloor undergoes dramatic changes after volcanic eruptions. Data on these changes are still limited, but the best studied example is the East Pacific Rise (EPR) at 9 degrees 50N, where the temporal evolution of the vent fluid chemistry after the 1991/1992 eruption was documented. The area underwent another eruption sequence during late 2005/early 2006, and here we show that a similar evolution is recurring in the iron and sulfide contents of the high-temper...
GEOCHEMICAL CHARACTERISTICS OF THE RECENT SEDIMENTS FROM THE SEA OF MARMARA BODUR, MN; ERGIN, M (Elsevier BV, 1994-07-01) Six box-cores, one boomerang core and one hundred sixty-six surface sediment samples recovered in the Sea of Marmara were analyzed in an attempt to establish the main controls on distribution and origin of trace metals within the oxic to suboxic basin of this sea.
Carbon and nitrogen isotopic ratios of suspended particulate organic matter (SPOM) in the Black Sea water column Coban-Yildiz, Yesim; Altabet, M; YILMAZ, AYŞEN; Tuğrul, Süleyman (Elsevier BV, 2006-01-01) Carbon and nitrogen isotopic ratios (delta(13)N and delta(13)C) of suspended particulate organic matter (SPOM) in the water column of the Black Sea were measured at a total of nine stations in September-October (autumn) 1999 and May 2001. For comparison, a station in the Mediterranean Sea and one in the Sea of Marmara were sampled in October 1999. Large-sized particle samples, as well as samples of surface sediment were also collected for N and C isotopic analysis. The results revealed important vertical an...

Citation Formats

A. J. Findlay, E. R. Estes, A. Gartman, M. Yücel, A. Kamyshny, and G. W. Luther, “Iron and sulfide nanoparticle formation and transport in nascent hydrothermal vent plumes,” NATURE COMMUNICATIONS, pp. 0–0, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32313.