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Weldeab, Syee; Emeis, Kay-Christian; Hemleben, Christoph; Siebel, Wolfgang (2002): Sr- and Nd-isotopic composition of bulk lithogenic sediments from the Eastern Mediterranean Sea (Table 1) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.66937, Supplement to: Weldeab, S et al. (2002): Provenance of lithogenic surface sediments and pathways of riverine suspended matter in the Eastern Mediterranean Sea: evidence from 143Nd/144Nd and 87Sr/86Sr ratios. Chemical Geology, 186(1-2), 139-149, https://doi.org/10.1016/S0009-2541(01)00415-6

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Abstract:
In order to characterize the provenance of lithogenic surface sediments from the Eastern Mediterranean Sea (EMS), residual (leached) fraction of 34 surface samples have been analysed for their 143Nd/144Nd and 87Sr/86Sr isotope ratios. The sample locations bracket all important entrances of riverine suspended matter into the EMS as well as all sub-basins of the EMS. The combined analyses of these two isotope ratios provide a precise characterization of the lithogenic fraction of surface sediments and record their dilution towards the central sub-basins. We reconstruct provenance and possible pathways of riverine dispersal and current redistribution, assuming more or less homogenous isotopic signatures and flux rates of the eolian fraction over the EMS.
Lithogenic sediments entering the Ionian Sea from the Calabrian Arc and the Adriatic Sea are characterized by high 87Sr/86Sr isotope ratios and low epsilon-Nd(0) values (average 87Sr/86Sr=0.718005 and epsilon-Nd(0)=-11.06, n=5). Aegean Sea terrigenous sediments show an average ratio of 87Sr/86Sr=0.713089 (n=5) and values of epsilon-Nd(0)=-7.89 (n=5). The Aegean isotopic signature is traceable up to the southwest, south, and southeast of Crete. The sediment loads entering the EMS via the Aegean Sea are low and spread out mainly through the Strait of Casos (east of Crete). Surface sediments from the eastern Levantine Basin are marked by the highest epsilon-Nd(0) values (-3.3, n=6) and lowest 87Sr/86Sr isotope ratios (average 0.709541, n=6), reflecting the predominant input of the Nile sediment. The influence of the Nile sediment is traceable up to the NE-trending, eastern flank of the Mediterranean Ridge.
The characterization of the modern riverine dispersal and eolian flux, based on isotope data, may serve as a tool to reconstruct climate-coupled variations of lithogenic sediment input into the EMS.
Project(s):
Ocean Drilling Program (ODP)
Southern European Seas: Assessing and Modelling Ecosystem Changes (SESAME)
Funding:
Sixth Framework Programme (FP6), grant/award no. 36949: Southern European Seas: Assessing and Modelling Ecosystem Changes
Coverage:
Median Latitude: 34.902216 * Median Longitude: 25.593476 * South-bound Latitude: 32.009000 * West-bound Longitude: 13.188833 * North-bound Latitude: 40.138167 * East-bound Longitude: 34.843667
Date/Time Start: 1993-05-17T00:00:00 * Date/Time End: 1999-04-18T00:00:00
Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m
Event(s):
160-964A  * Latitude: 36.260300 * Longitude: 17.749700 * Date/Time Start: 1995-03-17T20:14:00 * Date/Time End: 1995-03-18T21:30:00 * Elevation: -3658.0 m * Penetration: 101.8 m * Recovery: 106.12 m * Location: Eastern Basin * Campaign: Leg160 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 11 core; 101.8 m cored; 0 m drilled; 104.2 % recovery
160-966A  * Latitude: 33.796700 * Longitude: 32.701600 * Date/Time Start: 1995-03-27T05:58:00 * Date/Time End: 1995-03-27T21:46:00 * Elevation: -927.0 m * Penetration: 106.8 m * Recovery: 73.21 m * Location: Eastern Basin * Campaign: Leg160 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 13 cores; 106.8 m cored; 0 m drilled; 68.5 % recovery
160-968A  * Latitude: 34.331700 * Longitude: 32.751100 * Date/Time Start: 1995-04-09T12:13:00 * Date/Time End: 1995-04-12T16:30:00 * Elevation: -1961.0 m * Penetration: 302.7 m * Recovery: 241.53 m * Location: Eastern Basin * Campaign: Leg160 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 34 cores; 302.7 m cored; 0 m drilled; 79.8 % recovery
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Latitude of eventLatitude
2 Longitude of eventLongitude
3 Elevation of eventElevationm
4 Event labelEvent
5 DEPTH, sediment/rockDepth sedmGeocode
6 Strontium-87/Strontium-86 ratio87Sr/86SrWeldeab, SyeeMass spectrometer Finnigan MAT 262
7 Strontium-87/Strontium-86 ratio, error87Sr/86Sr e±Weldeab, SyeeCalculated2 x standard deviation
8 Neodymium-143/Neodymium-144 ratio143Nd/144NdWeldeab, SyeeMass spectrometer Finnigan MAT 262
9 Neodymium-143/Neodymium-144 ratio, error143Nd/144Nd e±Weldeab, SyeeCalculated2 x standard deviation
10 ε-Neodymiumε-NdWeldeab, SyeeCalculated
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
170 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Latitude		2 
Longitude		3 
Elevation [m]		4 
Event		5 
Depth sed [m]		6 
87Sr/86Sr		7 
87Sr/86Sr e [±]		8 
143Nd/144Nd		9 
143Nd/144Nd e [±]		10 
ε-Nd
32.009031.8875-198M25/1_MC25 00.7084260.0000100.5124410.000008-3.80
32.321834.1655-1284M44/3_KL82 00.7090530.0000100.5124950.000008-2.79
32.324231.3248-1007M25/1_MC24 00.7094950.0000100.5124680.000009-3.28
32.608734.1389-1433M44/3_KL83 00.7113530.0000100.5124720.000008-3.24
32.613534.0270-1450M44/3_KL85 00.7093810.0000100.5124850.000010-2.98
32.679830.5968-1940M25/1_MC23 00.7109440.0000100.5123670.000010-5.25
33.025834.8437-1028M25/1_MC35 00.7075310.0000100.5125830.000010-1.03
33.245029.4545-2948M25/1_MC22 00.7142130.0000100.5121500.000010-9.48
33.604828.5710-3039M25/1_MC21 00.7143610.0000100.5121570.000008-9.34
33.703324.7136-2038160-971A 00.7159680.0000100.5120700.000010-11.08
33.736724.8020-2076160-970A 00.7162110.0000100.5120770.000010-10.94
33.796732.7016-927160-966A 00.7113860.0000100.5122890.000008-6.81
33.840024.8845-2200160-969A 00.7161190.0000100.5120620.000007-11.24
33.859724.8577-2154M40/4_KL53 00.7163950.0000100.5120670.000010-11.14
34.302519.8987-3129M40/4_KL55 00.7174300.0000100.5119950.000008-12.54
34.331732.7511-1961160-968A 00.7108620.0000100.5123120.000011-6.36
34.434332.6267-2473M25/1_MC38 00.7123060.0000100.5124400.000010-3.82
34.528318.9723-832M40/4_MC531 00.7168870.0000100.5121430.000009-9.66
34.811223.1942-2788M40/4_SL71 00.7169500.0000100.5120510.000010-11.45
34.814227.2960-2157M40/4_SL67 00.7149590.0000100.5121520.000009-9.48
35.229321.4993-3376M40/4_MC534 00.7159240.0000100.5120760.000009-10.96
35.599825.9055-560M40/4_KL50 00.7109140.0000100.5123410.000009-5.79
35.780318.9483-3695160-973A 00.7169770.0000100.5120180.000008-12.09
35.810322.6703-1020M40/4_MC533 00.7179310.0000100.5120650.000009-11.18
35.810522.6703-1018M40/4_KL59 00.7164730.0000100.5120740.000008-11.00
35.816825.2662-1839M40/3_MC521 00.7137240.0000100.5122170.000009-8.21
35.842025.2660-1840M40/3_MC522 00.7137340.0000100.5122060.000007-8.43
36.146025.5640-827M40/4_KL49 00.7138310.0000100.5122090.000010-8.37
36.260317.7497-3658160-964A 00.7170570.0000100.5120150.000008-12.15
37.035813.1888-470M40/4_KL60 00.7157000.0000100.5120170.000007-12.11
37.394216.0062-2517M40/4_MC536 00.7200860.0000100.5120790.000010-10.90
39.274823.7077-1250M40/3_MC515 00.7132450.0000100.5122470.000008-7.63
39.945718.9972-911M40/4_MC532 00.7175330.0000100.5121450.000010-9.62
40.138217.0307-1100M25/1_MC10 00.7169450.0000100.5121230.000007-10.01