10.1594/PANGAEA.735750
Weldeab, Syee
Syee
Weldeab
0000-0002-4829-5237
Emeis, Kay-Christian
Kay-Christian
Emeis
0000-0003-0459-913X
Hemleben, Christoph
Christoph
Hemleben
Vennemann, Torsten W
Torsten W
Vennemann
0000-0003-4061-0420
Schulz, Hartmut
Hartmut
Schulz
Sr and Nd composition, stable oxygen isotope record and lithogenic flux in eastern Mediterranean sediments
PANGAEA
2002
Piston corer Meischner large
Gravity corer (Kiel type)
M40/4
M44/3
Meteor (1986)
Paleoceanography at Tübingen University (GeoTü)
1998-01-23T00:00:00/1999-04-18T00:00:00
en
Supplementary Publication Series of Datasets
10.1016/S0016-7037(02)00954-7
11 datasets
application/zip
Creative Commons Attribution 3.0 Unported
Isotopic ratios of Sr and Nd from lithogenic components of three isochronous core sections recovered from an east-west transect in the Eastern Mediterranean Sea (EMS) have been analyzed. The data are used for a quantitative estimate of the temporal and spatial variation of detrital flux to the EMS, assuming Saharan dust and Aegean/Nile particulate matter as dominant end members. It was established that the carbonate-free Saharan dust flux during deposition of the nonsapropel layers of marine oxygen isotope stage 5.4 (MIS 5.4) was similar to the present flux. During the deposition of sapropels S5 and S6, however, the Saharan dust input was drastically reduced and was not balanced by a change in the riverine influx at this time. Denser vegetation cover during more humid conditions may have reduced physical erosion and sediment removal in the source area. During marine oxygen isotope stage 6.2 (MIS 6.2) a pronounced increase of Saharan dust and detrital influx from the Aegean region is evident and implies more arid conditions in the southern and northern catchment areas. During this period, intersite variations are interpreted in terms of their geographic location relative to the seaways connecting the Aegean Sea and EMS. The width of the straits and hence the amount of sediment entering the eastern basins may have been affected by a low sea level that impeded interbasin sediment dispersal.
Supplement to: Weldeab, Syee; Emeis, Kay-Christian; Hemleben, Christoph; Vennemann, Torsten W; Schulz, Hartmut (2002): Sr and Nd isotope composition of Late Pleistocene sapropels and nonsapropelic sediments from the Eastern Mediterranean Sea: implications for detrital influx and climatic conditions of the source areas. Geochimica et Cosmochimica Acta, 66(20), 3585-3598
23.19416
34.1389
32.6087
34.8141666666666
E of Crete