Axial Volcano, seawater at 1764 m (Juan de Fuca Ridge)
Juan de Fuca Ridge, northeast Pacific
Other media
- Type
- Other medium
Seawater sampled at 1764 m, about 13 km west-northwest of Axial Volcano, stored unfiltered and unacidified (Sharma et al., 2000).
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 |
|---|---|---|---|---|
| 1.01 | 1 | unfiltered deep seawater Single analysis (Axial, 1764 m). Axial, 1764 m: Mg 53 mmol/kg, Cl 542 mmol/kg, Os 55 fmol/kg, measured 0.925, corrected 1.01 ± 0.01. Cl in brackets: content corrected for seawater contamination during sampling. An aliquot of the same water, published by Sharma et al. (1997), had given a 20 % lower value, judged inaccurate by the authors. | Sharma et al. (2000), Osmium isotopes in hydrothermal fluids from the Juan de Fuca Ridge,… | |
| 0.8614 ± 0.0318 | 0.8261 / 0.8876 | 3 | seawater at 1764 m, unfiltered and unacidified (osmium) Mean and standard deviation recalculated from 3 analyses, 0.8261 to 0.8876 (#10 0.8261; #11-A 0.8706; #11-B 0.8876). Published: #10: 187Os/192Os 0.26798, 187Os/186Os 6.9 ± 0.4, Os 15.1 ± 1.1 fM/kg; #11: Os 13.5 ± 1.2 fM/kg; #11-A: 187Os/192Os 0.28240, 187Os/186Os 7.3 ± 1.2; #11-B: 187Os/192Os 0.28793, 187Os/186Os 7.4 ± 1.3. Coordinates from the text: 46°02.18′ N, 130°09.55′ W. The authors ascribe the low ratios to hydrothermal input or contamination; Sharma et al. (2000) later measured 1.01 on the same water and judged these 1997 values inaccurate. | Sharma et al. (1997), The concentration and isotopic composition of osmium in the oceans,… |
Deposits of the same type
- North-East Pacific, Juan de Fuca Ridge (47.93° N 129.07° W)
- Monterey Bay, station M1
- North-East Pacific, 1000 m (station P26 and Haida Eddy)
- Hydrogenetic Fe-Mn deposit (crust), Pacific (S6-79-NP, D4-13A)
- Hydrogenetic Fe-Mn deposit (crust), Pacific (F7-87-SC, D9-16)
- Santa Barbara Basin
- North-East Pacific, 31° N 137° W
- North Pacific, SAFe station (SAFe D1 reference sample)
Cite this page
IsoFind Atlas (2026). Axial Volcano, seawater at 1764 m (Juan de Fuca Ridge), isotope signatures. https://www.isofind.tech/isotopes/en/sites/volcan-axial-eau-de-mer-a-1764-m-dorsale-juan-de-fuca/ (accessed 2026-10-21).
@misc{isofind2026axialvolcanoseawaterat1764mju,
title = {Axial Volcano, seawater at 1764 m (Juan de Fuca Ridge), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/volcan-axial-eau-de-mer-a-1764-m-dorsale-juan-de-fuca/},
note = {Accessed 2026-10-21}
}Updated : 2026-10-21