Deep-water diagenetic Fe-Mn deposit (nodule), Northwest Atlantic (USGS, Nod-A-1), USGS reference material
Atlantic Ocean
Other media
- Type
- Other medium
Deep-water diagenetic Fe-Mn deposit (nodule) of Rehkämper et al. (2002), Northwest Atlantic, 788 m water depth; 108 ppm Tl, 18.5 % Mn and 10.9 % Fe. Deep-water diagenetic nodules and crusts (0 to +9) are lighter than hydrogenetic crusts, the more so as their Mn/Fe is high (r = 0.97): closed-system adsorption of pore-water Tl, nearly quantitative for the lowest values. 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 |
|---|---|---|---|---|
| 8.9 ± 0.45 ε | 1 | Single analysis; ± 0.45 ε (2σ, external reproducibility on an in-house Fe-Mn crust); 108 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 |
|---|---|---|---|---|
| 18.957 ± 0.003 | 1 | Single analysis; uncertainty estimated from the external precision of about 150 ppm (2σ). | 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 ± 0.002 | 1 | Single analysis; uncertainty estimated from the external precision of about 150 ppm (2σ). | 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 |
|---|---|---|---|---|
| 38.929 ± 0.006 | 1 | Single analysis; uncertainty estimated from the external precision of about 150 ppm (2σ). | Rehkämper et al. (2002), Thallium isotope variations in seawater and hydrogenetic, diagen… |
Deposits of the same type
- Hydrogenetic Fe-Mn deposit (crust), North Atlantic (BM1963.897)
- Siders Pond (Falmouth) United States
- Sargasso Sea, BATS station
- Subtropical North Atlantic, station GPrI 20 (31.67° N 64.17° W)
- Wilton natural wetland (Wisconsin) United States
- Wilton constructed wetland (Wisconsin) United States
- Hydrogenetic Fe-Mn deposit (crust), North Atlantic (Hudson St. 54, BM1969.05)
- Hydrogenetic Fe-Mn deposit (crust), North Atlantic (Alv 539, 2-1A)
Cite this page
IsoFind Atlas (2026). Deep-water diagenetic Fe-Mn deposit (nodule), Northwest Atlantic (USGS, Nod-A-1), USGS reference material, isotope signatures. https://www.isofind.tech/isotopes/en/sites/depot-fe-mn-diagenetique-profond-nodule-atlantique-nord-ouest-usgs-nod-a-1-materiau-de-reference-usgs/ (accessed 2026-10-16).
@misc{isofind2026deepwaterdiageneticfemndeposi,
title = {Deep-water diagenetic Fe-Mn deposit (nodule), Northwest Atlantic (USGS, Nod-A-1), USGS reference material, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/depot-fe-mn-diagenetique-profond-nodule-atlantique-nord-ouest-usgs-nod-a-1-materiau-de-reference-usgs/},
note = {Accessed 2026-10-16}
}Updated : 2026-10-16