Third Plain
South Australia, Flinders Ranges, Australia
OtherZn (Pb)
- Type
- Hypogene nonsulfide zinc deposit (willemite)
Flinders Ranges, the deformed and uplifted northern Adelaide geosyncline, hosted in Neoproterozoic to Cambrian carbonates. Highly radiogenic lead, anomalous relative to the Holmes-Houtermans and Stacey-Kramers models, attributed to the U- and Th-rich basement; nonsulfide and sulfide deposits fall on one line, hence genetically related.
206Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 19.782 | 1 | willemite One analysis, Table 1. | Harkins et al. (2008), Lead isotope constraints on the origin of nonsulfide zinc and sulf… |
207Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 15.861 | 1 | willemite One analysis, Table 1. | Harkins et al. (2008), Lead isotope constraints on the origin of nonsulfide zinc and sulf… |
208Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 39.545 | 1 | willemite One analysis, Table 1. | Harkins et al. (2008), Lead isotope constraints on the origin of nonsulfide zinc and sulf… |
Deposits of the same type
Cite this page
IsoFind Atlas (2026). Third Plain, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/third-plain/ (accessed 2026-10-13).
@misc{isofind2026thirdplainisotopesignatures,
title = {Third Plain, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/third-plain/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13