Pore water chemistry of sediment core GeoB15101-7 and water chemistry of CTD casts GeoB15101-1 and GeoB15101-6, supplement to: Goldhammer, Tobias; Schwärzle, Andreas; Aiello, Ivano W; Zabel, Matthias (2015): Temporal stability and origin of chemoclines in the deep hypersaline anoxic Urania basin. Geophysical Research Letters, 42(12), 4888-4895

DOI

Submarine brine lakes feature sharp and persistent concentration gradients between seawater and brine, though these should be smoothed out by free diffusion in open ocean settings. The anoxic Urania basin of the Eastern Mediterranean contains an ultra sulfidic, hypersaline brine of Messinian origin above a thick layer of suspended sediments. With a dual modeling approach we reconstruct its contemporary stratification by geochemical solute transport fundamentals, and show that thermal convection is required to maintain mixing in the brine and mud layer. The origin of the Urania basin stratification was dated to 1650 years before present, which may be linked to a major earthquake in the region. The persistence of the chemoclines may be key to the development of diverse and specialized microbial communities. Ongoing thermal convection in the fluid mud layer may have important, yet unresolved consequences for sedimentological and geochemical processes, also in similar environments.

Identifier
DOI https://doi.org/10.1594/PANGAEA.846796
Related Identifier https://doi.org/10.1002/2015GL063758
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.846796
Provenance
Creator Goldhammer, Tobias; Schwärzle, Andreas; Aiello, Ivano W; Zabel, Matthias
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2015
Funding Reference Seventh Framework Programme
Rights Creative Commons Attribution 3.0 Unported
OpenAccess true
Representation
Language English
Resource Type Supplementary Collection of Datasets
Format application/zip
Size 3 datasets
Discipline Earth System Research
Spatial Coverage (21.471 LON, 35.231 LAT)
Temporal Coverage Begin 2011-02-10T15:41:00Z
Temporal Coverage End 2011-02-11T15:46:00Z