Northern Arkansas district
Northern Arkansas, United States
Mississippi Valley TypePb-Zn
- Type
- Mississippi Valley Type (MVT)
Lead is less radiogenic than at Tri-State. Its signature overlaps that of southeast Missouri (Viburnum, Old Lead Belt), suggesting similar sources.
206Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 20.2396 / 21.6438 | sphalerite | Lead isotope trends and metal sources in MVT districts mid-continent US (2018) |
207Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 15.8216 / 15.9176 | sphalerite | Lead isotope trends and metal sources in MVT districts mid-continent US (2018) |
208Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 39.4633 / 40.8863 | sphalerite | Lead isotope trends and metal sources in MVT districts mid-continent US (2018) |
Deposits of the same type
- Tri-State district United States
- Upper Mississippi Valley district United States
- Central and East Tennessee MVT United States
- Southern Appalachians MVT United States
- Cusses (Brusque) France
- Les Malines France
- Durfort France
- Saint-Félix-de-Pallières France
Cite this page
IsoFind Atlas (2026). Northern Arkansas district, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/district-du-nord-de-l-arkansas/ (accessed 2026-10-06).
@misc{isofind2026northernarkansasdistrictisoto,
title = {Northern Arkansas district, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/district-du-nord-de-l-arkansas/},
note = {Accessed 2026-10-06}
}Updated : 2026-10-06