Temporal trends in vent fluid iron and sulfide chemistry following the 2005/2006 eruption at East Pacific Rise, 9°50′N.

Yücel, Mustafa and Luther III, George W. (2013) Temporal trends in vent fluid iron and sulfide chemistry following the 2005/2006 eruption at East Pacific Rise, 9°50′N. Open Access Geochemistry, Geophysics, Geosystems, 14 (4). pp. 759-765. DOI 10.1002/ggge.20088.

[img]
Preview
Text
16-2013-YucelLutherGcubed.pdf - Published Version

Download (3945Kb) | Preview

Supplementary data:

Abstract

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°50′N, 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-temperature fluids sampled in June 2006, January 2007, and June 2008. The vents have had increasing dissolved iron and decreasing acid-volatile sulfide (free sulfide plus FeS) concentrations with 1 order of magnitude variation. In addition, chromium reducible sulfide (mainly pyrite) also had fivefold decreasing concentrations over the 3 years. Our results confirm a pattern that was noted only once before for 9°50′N EPR and emphasize the dramatic yearly variability in the concentrations of iron-sulfur species emanating from vents.

Document Type: Article
Keywords: hydrothermal vents; East Pacific Rise; seafloor eruption; sulfide; iron; DSV Alvin
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-MG Marine Geosystems
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1002/ggge.20088
ISSN: 1525-2027
Date Deposited: 15 Oct 2013 09:49
Last Modified: 28 Feb 2018 07:51
URI: http://oceanrep.geomar.de/id/eprint/22095

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...