NE Atlantic background carbonate sediments (core 23#12M)
NE Atlantic, east of the ridge (32°33′N, 20°21′W, 4660 m), Océan Atlantique (eaux internationales)
Sediments
- Type
- Sediment
Reference core outside hydrothermal influence used by Cave et al. (2003) for the PGE background: Os flux of 0.044 ng/cm²/kyr, four to nine times less than beneath the Rainbow plume.
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 |
|---|---|---|---|---|
| 1.0369 ± 0.0417 | 0.9867 / 1.0728 | 4 | carbonate sediment (6-26 cm) Mean and standard deviation recalculated from 4 analyses, 0.9867 to 1.0728 (60-66 mm 1.0185; 102-108 mm 1.0728; 200-210 mm 1.0696; 250-260 mm 0.9867). Depths in mm. Os 33 to 57 pg/g, lower precision (2σ error 0.0073 to 0.0206); 1.2-1.8 and 14-15 cm analysed with no isotope ratio. | Cave et al. (2003), Deposition of osmium and other platinum-group elements beneath the ul… |
Deposits of the same type
- Sediments beneath the Rainbow hydrothermal plume (Mid-Atlantic Ridge) Océan Atlantique (eaux internationales)
- Cajarc reservoir on the Lot France
- Riou Mort downstream of the Viviez plant France
- Riou Mort and Riou Viou upstream of the Viviez plant France
- Marcenac reservoir on the Lot (reference) France
- Present-day Gardon sediments (main stream, November 2011) France
- Gardon mining tributary sediments (November 2011) France
- Gardon sedimentary archive (flood terrace, GE core) France
Cite this page
IsoFind Atlas (2026). NE Atlantic background carbonate sediments (core 23#12M), isotope signatures. https://www.isofind.tech/isotopes/en/sites/sediments-carbonates-de-fond-de-l-atlantique-nord-est-carotte-23-12m/ (accessed 2026-10-20).
@misc{isofind2026neatlanticbackgroundcarbonate,
title = {NE Atlantic background carbonate sediments (core 23#12M), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/sediments-carbonates-de-fond-de-l-atlantique-nord-est-carotte-23-12m/},
note = {Accessed 2026-10-20}
}Updated : 2026-10-20