Black Sea, shallow euxinic margin (stations 5 and 15)
Black Sea, southwestern and Sinop margins, about 200 m
Sediments
- Type
- Sediment
Sediments from the 1988 R/V Knorr cruise; depositional setting defined by iron speciation (Lyons and Severmann, 2006). Chen et al. (2022) find no Fe-Mn shuttle effect: authigenic ε205Tl does not vary with setting and stays close to Black Sea surface water (-2.2), authigenic δ51V is heavier under euxinic waters (-0.57 ‰) than under oxic or suboxic waters (-1.06 and -1.04 ‰). Euxinic margin sediments at 198 and 233 m (station 5 in the southwest, station 15 in Sinop Bay), 1.7 % organic carbon and 12 % carbonate.
ε205Tl in ε units (parts per 10,000) Values of the same system
Standard : NIST SRM 997
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −2.67 ± 0.28 ε | −2.87 / −2.47 ε | 2 | margin sediment under euxinic water (8 to 10 cm), authigenic fraction (Tl) Mean and standard deviation recalculated from 2 analyses, -2.87 to -2.47 (15 8-10 -2.47; 5 8-10 -2.87). Published means for all euxinic sediments: ε205Tl -2.4 ± 0.3 (N = 8 for 9 values in the table), δ51V -0.57 ± 0.06 ‰ (N = 7), which leaves out BC21 49 cm (-0.27 ‰) without saying so. | Chen et al. (2022), Iron and manganese shuttle has no effect on sedimentary thallium and … |
δ51V in ‰ (per mil) Values of the same system
Standard : AA (Alfa Aesar)
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −0.66 ‰ | 1 | margin sediment under euxinic water (8 to 10 cm), authigenic fraction (V) Single analysis (5 8-10). Published means for all euxinic sediments: ε205Tl -2.4 ± 0.3 (N = 8 for 9 values in the table), δ51V -0.57 ± 0.06 ‰ (N = 7), which leaves out BC21 49 cm (-0.27 ‰) without saying so. | Chen et al. (2022), Iron and manganese shuttle has no effect on sedimentary thallium and … |
Deposits of the same type
- Pebble iron oxide precipitates United States
- Laohugou No. 12 Glacier cryoconite China
- Yuzhufeng Glacier cryoconite China
- Bayi Glacier cryoconite China
- Qiyi Glacier cryoconite China
- Yulong Snow Mountains glacier cryoconite China
- Hailuogou Glacier (Mount Gongga) cryoconite China
- Dangxiong Glacier cryoconite China
Cite this page
IsoFind Atlas (2026). Black Sea, shallow euxinic margin (stations 5 and 15), isotope signatures. https://www.isofind.tech/isotopes/en/sites/mer-noire-marge-euxinique-peu-profonde-stations-5-et-15/ (accessed 2026-10-20).
@misc{isofind2026blackseashalloweuxinicmargins,
title = {Black Sea, shallow euxinic margin (stations 5 and 15), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/mer-noire-marge-euxinique-peu-profonde-stations-5-et-15/},
note = {Accessed 2026-10-20}
}Updated : 2026-10-20