(Table 2) Age control points from IODP Site 339-U1386, supplement to: Kaboth, Stefanie; Bahr, André; Reichart, Gert-Jan; Jacobs, Bram; Lourens, Lucas Joost (2016): New insights into upper MOW variability over the last 150kyr from IODP 339 Site U1386 in the Gulf of Cadiz. Marine Geology, 377, 136-145

DOI

The upper Mediterranean Outflow Water (MOW) paleo-oceanographic history in the Gulf of Cadiz is poorly constrained due to the lack of high-resolution records that pre-date the last glaciation. Existing proxy records concentrate on MOW variability along the middle slope of the Gulf of Cadiz. Here we present a continuous high-resolution benthic foraminifera d18O record from the upper MOW core at IODP Expedition 339 Site U1386 in the Gulf of Cadiz of the past 150000 years. Based on d18O, grain-size and Zr/Al variability comparison of our results with existing Mediterranean Sea (MD01-2472, MD95-2043), open ocean (LR04) and Gulf of Cadiz (MD99-2339) records we have gathered new insights into the evolution of the upper MOW core on glacial-interglacial timescales. The influence of the upper MOW at Site U1386 was strongest during MIS 5 and MIS 1. Similar d18O variability can be seen in the Levantine IntermediateWater (LIW) originating from the Levantine Basin of the Eastern Mediterranean Sea. We found clear indication for a vertical shift of the MOW from the upper to the middle slope of the Gulf of Cadiz during sea level lowstands coinciding with MIS 4 and MIS 2 but also during MIS 3. Additionally, our results indicate an increased upper MOW flow correlated with Heinrich Events 7 to 10 and the Younger Dryas, and also inversely relate to precession-forced monsoonal freshwater inputs into the Eastern Mediterranean. In the context of Sapropel formation,we could not find conclusive evidence of the proposed MOW shutdown in our data.

Identifier
DOI http://dx.doi.org/doi:10.1594/PANGAEA.870577
Metadata Access http://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite3&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.870577
Provenance
Creator Bahr, André;Reichart, Gert-Jan;Kaboth, Stefanie;Jacobs, Bram;Lourens, Lucas Joost
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2017
Rights Creative Commons Attribution 3.0 Unported (CC-BY)
Representation
Language English
Resource Type Supplementary Dataset
Format text/tab-separated-values
Coverage
Discipline Earth System Research
Spatial Coverage (37N,8 W)