Calcium carbonate dissolution rates in hydrothermal vent fields of the Guaymas Basin

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ID: 305352
1994
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Abstract
Analysis of bivalve shell fragments that were embedded in epoxy blocks, mounted on titanium stakes, and deployed by DSRV Alvin at 5 sites in the Southern Trough of the Guaymas Basin (27”00’N, lll”24.55’W; depth 2012 m) indicates significant variation of calcium carbonate dissolution in in situ exposures of more than 900 days. Arrays of shell fragments of six bivalve species (i.e., Bathymodiolus thermophilus, Calyptogena magnijka, Calyptogena sp., Corbicula Jluminea, Crassostrea virginica and Mytilus edulis) were positioned -17 cm, -7 cm and -2.5 cm below the sediment-water interface and 2.5 cm, 7 cm and 17 cm above the sediment-water interface in hydrothermal vent fields of the basin. Maximum dissolution rates for both calcite (mean = 86 pm/yr) and aragonite (mean = 312 urnr clam area) to 227 p,m/yr (site 3; clam area), and those of calcite dissolution ranged from 13 km/yr (site 3; clam area) to 94 um/yr (site 4; bacterial mat area). Dissolution rates were consistently highest in the bacterial mat area (site 4; mean = 94 um/yr for calcite and 223 p,m/yr for aragonite). Rates of calcium carbonate dissolution reported here for hydrothermal vent fields of the Guaymas Basin compare favorably with those of Rose Garden (Galapagos Rift) and 21N (East Pacific Rise) hydrothermal vent sites. These results have important implications for assessing biological rate processes in deep-sea hydrothermal vent environments.
Reference Key
openalex_W1995594817 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Richard A. Lutz, Michael J. Kennish, Alan S. Pooley, Lowell W. Fritz
Journal journal of marine research
Year 1994
DOI
10.1357/0022240943076894
URL
https://doi.org/10.1357/0022240943076894
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