(Table 1) Age determination of sediment core MD01-2430, supplement to: Vidal, Laurence; Ménot, Guillemette; Joly, C; Bruneton, H; Rostek, Frauke; Çagatay, M Namik; Major, C; Bard, Edouard (2010): Hydrology in the Sea of Marmara during the last 23 ka: Implications for timing of Black Sea connections and sapropel deposition. Paleoceanography, 25(1), PA1205

DOI

Sediments deposited under lacustrine and marine conditions in the Sea of Marmara hold a Late Quaternary record for water exchange between the Black Sea and the Mediterranean Sea. Here we report a multiproxy data set based on oxygen and strontium isotope results obtained from carbonate shells, major and trace elements, and specific organic biomarker measurements, as well as a micropaleontological study from a 14C-dated sediment core retrieved from the Sea of Marmara. Pronounced changes occurred in d18O and 87Sr/86Sr values at the fresh and marine water transition, providing additional information in relation to micropaleontological data. Organic biomarker concentrations documented the marine origin of the sapropelic layer while changes in n-alkane concentrations clearly indicated an enhanced contribution for organic matter of terrestrial origin before and after the event. When compared with the Black Sea record, the results suggest that the Black Sea was outflowing to the Sea of Marmara from the Last Glacial Maximum until the warmer Bølling-Allerød. The first marine incursion in the Sea of Marmara occurred at 14.7 cal ka B.P. However, salinification of the basin was gradual, indicating that Black Sea freshwaters were still contributing to the Marmara seawater budget. After the Younger Dryas (which is associated with a high input of organic matter of terrestrial origin) both basins were disconnected, resulting in a salinity increase in the Sea of Marmara. The deposition of organic-rich sapropel that followed was mainly related to enhanced primary productivity characterized by a reorganization of the phytoplankton population.

Identifier
DOI https://doi.org/10.1594/PANGAEA.831618
Related Identifier https://doi.org/10.1029/2009PA001735
Related Identifier https://doi.org/10.1016/S0025-3227(01)00302-4
Related Identifier https://journals.uair.arizona.edu/index.php/radiocarbon/article/view/4168
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.831618
Provenance
Creator Vidal, Laurence; Ménot, Guillemette; Joly, C; Bruneton, H; Rostek, Frauke; Çagatay, M Namik; Major, C; Bard, Edouard
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2010
Rights Creative Commons Attribution 3.0 Unported
OpenAccess true
Representation
Language English
Resource Type Supplementary Dataset
Format text/tab-separated-values
Size 40 data points
Discipline Earth System Research
Spatial Coverage (27.725 LON, 40.797 LAT); Marmara Sea