Rhine at Bartenheim (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 C 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
0.12366 ± 0.00267	0.11696 / 0.13085	33	detrital Ru-Os-Ir alloys (single grains) Mean and standard deviation recalculated from 33 analyses, 0.11696 to 0.13085 (AD Mt3 RB27 0.11696; AD Mt3 RB36 0.11861; AD Mt3 RB15 0.11930; AD Mt3 RB22b 0.12045; AD Mt3 RB31 0.12082; AD Mt3 RB10 0.12163; AD Mt3 RB26 0.12208; AD Mt3 RB32 0.12233; AD Mt3 RB34 0.12254; AD Mt3 RB42 0.12265; AD Mt3 RB41 0.12301; AD Mt3 RB35b 0.12325; AD Mt3 RB23 0.12330; AD Mt3 RB30 0.12333; AD Mt3 RB18 0.12340; AD Mt3 RB24 0.12358; AD Mt3 RB4 0.12392; AD Mt3 RB33 0.12419; AD Mt3 RB21b 0.12435; AD Mt3 RB11 0.12448; AD Mt3 RB16 0.12449; AD Mt3 RB12 0.12459; AD Mt3 RB9 0.12474; AD Mt3 RB37b 0.12475; AD Mt3 RB14 0.12497; AD Mt3 RB8 0.12516; AD Mt3 RB17 0.12530; AD Mt3 RB13 0.12530; AD Mt3 RB25 0.12545; AD Mt3 RB40 0.12578; AD Mt3 RB38 0.12675; AD Mt3 RB19b 0.12862; AD Mt3 RB7 0.13085). 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 Bartenheim (placer, detrital Ru-Os-Ir alloys), isotope signatures. https://www.isofind.tech/isotopes/en/sites/rhin-a-bartenheim-placer-alliages-ru-os-ir-detritiques/ (accessed 2026-10-20).

@misc{isofind2026rhineatbartenheimplacerdetrit,
  title = {Rhine at Bartenheim (placer, detrital Ru-Os-Ir alloys), isotope signatures},
  author = {{IsoFind Atlas}},
  year = {2026},
  url = {https://www.isofind.tech/isotopes/en/sites/rhin-a-bartenheim-placer-alliages-ru-os-ir-detritiques/},
  note = {Accessed 2026-10-20}
}

Updated : 2026-10-20