Rhine at Kembs (placer, detrital Ru-Os-Ir alloys)
Haut-Rhin, Upper Rhine below Basel, France
Sediments
- Type
- Sediment
Detrital Ru-Os-Ir alloys from Upper Rhine gold and platinum-group mineral placers; Dijkstra et al. (2016) link them to Paleozoic residual peridotites of the Alps, accreted with the Armorican terranes before the Variscan orogeny. Over the four localities, main mode at 0.1244 (Re-depletion age 0.48 Ga) and inflection point at 0.1205 (1.06 Ga). Locality A of the appendix. Coordinates not published.
187Os/188Os isotope ratio, no unit Values of the same system
Standard : Rapport absolu, sans standard de référence
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.12455 ± 0.00413 | 0.11619 / 0.12948 | 8 | detrital Ru-Os-Ir alloys (single grains) Mean and standard deviation recalculated from 8 analyses, 0.11619 to 0.12948 (AD Mt1 R91 0.11619; AD Mt1 R90 0.12199; AD Mt3 RK6 0.12407; AD Mt1 R87 0.12430; AD Mt1 R89 0.12533; AD Mt2 KK1 0.12705; AD Mt3 RK2 0.12796; AD Mt1 R93 0.12948). 2 suprachondritic grains (above 0.1276), which the authors attribute to mantle pyroxenites. | Dijkstra et al. (2016), Osmium isotope compositions of detrital Os-rich alloys from the R… |
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). Rhine at Kembs (placer, detrital Ru-Os-Ir alloys), isotope signatures. https://www.isofind.tech/isotopes/en/sites/rhin-a-kembs-placer-alliages-ru-os-ir-detritiques/ (accessed 2026-10-20).
@misc{isofind2026rhineatkembsplacerdetritalruo,
title = {Rhine at Kembs (placer, detrital Ru-Os-Ir alloys), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/rhin-a-kembs-placer-alliages-ru-os-ir-detritiques/},
note = {Accessed 2026-10-20}
}Updated : 2026-10-20