Hydrogenetic Fe-Mn deposit (crust), North Atlantic (Hudson St. 54, BM1969.05)
Atlantic Ocean
Other media
- Type
- Other medium
Hydrogenetic Fe-Mn deposit (crust) of Rehkämper et al. (2002), North Atlantic, 1850 m water depth; 40.8 and 49.0 ppm Tl, 19.2 % Mn and 30.4 % Fe. Hydrogenetic crusts, precipitated directly from seawater, have the heaviest ε205Tl (+10.4 to +14.3), unrelated to basin, depth or lead isotopes: constant fractionation of about +21 ε relative to seawater (α = 1.0021). Coordinates from Table 1.
ε205Tl in ε units (parts per 10,000) Values of the same system
Standard : NIST SRM 997
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 12.4 ± 0.14 ε | 12.3 / 12.5 ε | 2 | Mean and standard deviation recalculated from 2 analyses (sample and duplicate: 12.5 and 12.3); ± 0.45 ε (2σ) on each value; 40.8 and 49.0 ppm Tl. | Rehkämper et al. (2002), Thallium isotope variations in seawater and hydrogenetic, diagen… |
206Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 19.212 ± 0.122 | 19.126 / 19.299 | 2 | Mean and standard deviation recalculated from 2 analyses (sample and duplicate: 19.126 and 19.299). | Rehkämper et al. (2002), Thallium isotope variations in seawater and hydrogenetic, diagen… |
207Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 15.675 ± 0.011 | 15.668 / 15.683 | 2 | Mean and standard deviation recalculated from 2 analyses (sample and duplicate: 15.668 and 15.683). | Rehkämper et al. (2002), Thallium isotope variations in seawater and hydrogenetic, diagen… |
208Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 39.38 ± 0.224 | 39.222 / 39.539 | 2 | Mean and standard deviation recalculated from 2 analyses (sample and duplicate: 39.222 and 39.539). | Rehkämper et al. (2002), Thallium isotope variations in seawater and hydrogenetic, diagen… |
Deposits of the same type
- Hydrogenetic Fe-Mn deposit (crust), North Atlantic (Alv 539, 2-1A)
- Sargasso Sea, BATS station
- Subtropical North Atlantic, station GPrI 20 (31.67° N 64.17° W)
- Siders Pond (Falmouth) United States
- Deep-water diagenetic Fe-Mn deposit (nodule), Northwest Atlantic (USGS, Nod-A-1), USGS reference material
- Hydrogenetic Fe-Mn deposit (crust), North Atlantic (BM1963.897)
- TAG active mound hydrothermal fluids (Mid-Atlantic Ridge)
- Atlantic, Labrador Sea, station 64PE319 8
Cite this page
IsoFind Atlas (2026). Hydrogenetic Fe-Mn deposit (crust), North Atlantic (Hudson St. 54, BM1969.05), isotope signatures. https://www.isofind.tech/isotopes/en/sites/depot-fe-mn-hydrogenetique-croute-atlantique-nord-hudson-st-54-bm1969-05/ (accessed 2026-10-16).
@misc{isofind2026hydrogeneticfemndepositcrustn,
title = {Hydrogenetic Fe-Mn deposit (crust), North Atlantic (Hudson St. 54, BM1969.05), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/depot-fe-mn-hydrogenetique-croute-atlantique-nord-hudson-st-54-bm1969-05/},
note = {Accessed 2026-10-16}
}Updated : 2026-10-16