Distribution and chemistry of suspended particles from an active hydrothermal vent site on the Mid-Atlantic Ridge at 26°N

Trocine, Robert P.; Trefry, John H.

doi:10.1016/0012-821x(88)90041-6

Cited by 141 publications

(77 citation statements)

References 29 publications

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“…In particular, both Schmidt et al (2007) and Klevenz et al (2011) find correlations between Zn and Pb at Logatchev and 5 o S at the MAR, and Trefry et al (1994) also report strong associations between Zn and Cd in vent fluid samples at the Juan de Fuca Ridge. Trocine and Trefry (1988) report similar findings in samples from the plume at TAG, and additionally found Cu to be present in a different phase than Zn. Moreover, high Co concentrations were observed in particles containing high Cu concentrations at Logatchev (Schmidt et al, 2007) and 5 o S (Klevenz et al, 2011) along the MAR.…”

Section: Effect Of Metal: Sulfide Ratio On Particle Formationsupporting

confidence: 82%

“…Trocine and Trefry (1988) reported similar findings in the TAG plume, where Ni did not correlate with Fe, Mn, or total suspended matter. Ni is not leached in hydrothermal circulation, and is slow to react in mineral formation processes (Morse and Luther, 1999).…”

Section: Nickelsupporting

confidence: 82%

“…A shift occurs in plume composition from metal sulfides to metal oxides as the plume entrains additional seawater and becomes more oxidizing (Trocine and Trefry, 1988), further from the vent orifice. At this stage metal sulfides can begin to oxidize and dissolve, and particle reactive elements such as Cu, Mg, and Pb can be scavenged by iron oxides.…”

Section: Precipitation Of Metal Sulfides In the Buoyant Plumementioning

confidence: 98%

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Trace metal concentration and partitioning in the first 1.5 m of hydrothermal vent plumes along the Mid-Atlantic Ridge: TAG, Snakepit, and Rainbow

et al. 2015

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Please cite this article as: Findlay, Alyssa J., Gartman, Amy, Shaw, Timothy J., Luther III, George W., Trace metal concentration and partitioning in the first 1.5 meters of hydrothermal vent plumes along the Mid-Atlantic Ridge: TAG, Snakepit, and Rainbow, AbstractTo determine the significance of metal fluxes from hydrothermal vents, understanding the speciation, reactivity, and possible transformations of metals and metal sulfides within the hydrothermal plume is critical. In this study, we measure the concentration and partitioning of trace metals (Fe, Mn, Cu, Cd, Co, Pb, Ni) and sulfide phases within the first 1.5 meters of the rising plume at three vent fields (TAG, Snakepit, and Rainbow) along the Mid-Atlantic Ridge. A combination HCl/HNO 3 leaching method was used to differentiate metals present in metal mono-sulfides from those in pyrite and chalcopyrite. At all three vent sites, Mn and Fe are primarily in the < 0.2 µm (filtered) portion, whereas Cu, Co, Cd, and Pb are mainly in the unfiltered fraction. Significant concentrations of HNO 3 -extractable metals were found in the < 0.2 µm fraction at all three vent sites, indicating that they likely exist in a recalcitrant nanoparticulate phase such as pyrite or chalcopyrite. At TAG and Snakepit, Cu is correlated with Co, as Co enters into chalcopyrite and other CuFeS phases and Zn is correlated with Cd and Pb as they form discrete metal sulfide phases. At Rainbow, Zn, Cd, and Pb are correlated, but Cu and Co are not correlated. The Rainbow data are consistent with the higher metal to sulfide ratio found at Rainbow. These speciation differences are significant as both A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT2 mineral type and size will affect the amount of metal transported from the vent site and its availability for biogeochemical processes.

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Section: Effect Of Metal: Sulfide Ratio On Particle Formationsupporting

confidence: 82%

Section: Nickelsupporting

confidence: 82%

Section: Precipitation Of Metal Sulfides In the Buoyant Plumementioning

confidence: 98%

See 1 more Smart Citation

Trace metal concentration and partitioning in the first 1.5 m of hydrothermal vent plumes along the Mid-Atlantic Ridge: TAG, Snakepit, and Rainbow

et al. 2015

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“…Recent investigations report that a large part of Mn released from the hydrothermal centres occurs via a dissolved component yielding very low Mn contents in the close vicinity of these centres while their contents in suspended matter increase significantly away from the centres (Owen and Olivarez 1988). Other data show that V, P and REE are adsorbed on iron oxides in hydrothermal vent plumes (Trocine and Trefry 1988;Feely et al 1990;German et al 1990). Increased Ni contents have also been found in sediments away from hydrothermal centres (Metz et al 1988) and Co has been suggested as a monitor of hydrothermal discharge in manganese crusts (Manheim and Lane-Bostwick 1988), although Co enrichments are highest in crusts far away from hydrothermal centres.…”

Section: Discussionmentioning

confidence: 96%

Tungsten accumulation in Pacific ferromanganese deposits

Kunzendorf

Glasby²

1992

Mineral. Deposita

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Tungsten has often been reported in marine ferromanganese deposits and the question arises as to how the large oxyanionic species (WO42-) enters the appropriate phases. Very low W concentrations in seawater (less than 0.0002 lag/kg) suggest that it is not directly related to precipitation processes. Of all the comparable marine samples, manganese micronodules have the highest W contents, in the range 1.4 to 3.6 times, 3 higher than in the associated macronodules. A depositional record for more than 60 million years obtained for a thick manganese crust shows that the tungsten distribution with depth correlates best with As and to a lesser extent with Fe. The mechanism favoured for enrichment of W is precipitation onto fine hydrothermal manganese-rich particles supplied by ridge volcanic activity. Such particle plumes are usually released in cycles, stay for comparatively long periods in the water column, and are then transported from the hydrothermal centres to the deep basins where they settle and probably contribute to the growth of ferromanganese oxide phases on the ocean floor which is mainly by diagenetic and hydrogenetic processes.

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“…Berner, 1973; Trocine and Trefry, 1988;Olivarez and Owen, 1989;Trefry and Metz, 864 1989;Feely et al, 1991;Feely et al, 1998;German et al, 1990;Konhauser et al, 2007). (Fig.…”

Section: ) 686mentioning

confidence: 98%