Caiwei Guyot (Magellan Seamounts), Jiaolong dives 69 to 71
Pacific Ocean
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Crusts sampled in 2013 (cruise DY125-31) from 1720 to 4420 m: dive 69 at 4420 m (15°25.8′ N, 155°24.0′ E), dive 70 from 1954 to 2500 m (15°55.2′ N, 155°33.0′ E, site coordinates), dive 71 at 1720 m (15°52.8′ N, 155°25.2′ E). Crust OJ113-211T sliced over 10 cm; its deep layers are phosphatised (Wu et al., 2019).
δ51V in ‰ (per mil) Values of the same system
Standard : AA (Alfa Aesar)
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −1.07 ± 0.13 ‰ | −1.28 / −0.89 ‰ | 11 | hydrogenetic Fe-Mn crust, bulk and slices (vanadium) Mean and standard deviation recalculated from 11 analyses, -1.28 to -0.89 (Dive69 OJ121-111T (0-1 cm) -0.89; Dive70A OJ112-112T (roche totale) -1.17; Dive70A OJ112-112T (0-1 cm) -1.25; Dive70A OJ112-112T (1-3,5 cm) -1.10; Dive70A OJ112-112T (3,5-5,5 cm) -1.28; Dive70A OJ121-121T (0-1 cm) -1.02; Dive70A OJ121-121T (1-4 cm) -1.09; Dive70C OJ111-314T (roche totale) -1.01; Dive70C OJ111-314T (0-3,5 cm) -1.05; Dive70C OJ111-314T (3,5-6 cm) -1.00; Dive71 OJ112-011T (roche totale) -0.91). Dives 69, 70A, 70C and 71; the profile of OJ113-211T (dive 70B) is entered separately. The 3.5-5.5 cm layer of OJ112-112T, rich in P (2.8 %), is the lightest. Published mean of hydrogenetic crusts and nodules: -1.05 ± 0.16 ‰ (2SD, n = 22), i.e. 1.2 ± 0.2 ‰ below seawater (+0.20 ‰). | Wu et al. (2019), Vanadium isotopic fractionation during the formation of marine ferroman… |
| −1.14 ± 0.15 ‰ | −1.36 / −0.97 ‰ | 9 | Fe-Mn crust OJ113-211T, profile from 1 to 10 cm (vanadium) Mean and standard deviation recalculated from 9 analyses, -1.36 to -0.97 (1-2 cm -1.02; 2-3 cm -0.97; 3-4 cm -1.08; 4-5 cm -1.14; 5-6 cm -0.98; 6-7 cm -1.07; 7-8 cm -1.30; 8-9 cm -1.36; 9-10 cm -1.31). Dive 70B, 2350 to 2500 m. P 0.34 to 0.36 % down to 4 cm then 3.1 to 6.4 %: the phosphatised layers from 7 to 10 cm are the lightest (-1.30 to -1.36 ‰), while the top of the crust stays near the hydrogenetic mean; the authors suspect diagenetic remobilisation without being able to prove it. P (%): 1-2 cm 0.36; 2-3 cm 0.34; 3-4 cm 0.36; 4-5 cm 3.08; 5-6 cm 6.42; 6-7 cm 4.58; 7-8 cm 3.51; 8-9 cm 3.83; 9-10 cm 3.42. | Wu et al. (2019), Vanadium isotopic fractionation during the formation of marine ferroman… |
Deposits of the same type
- Caiqi Guyot (Magellan Seamounts), Jiaolong dive 73
- Hydrogenetic Fe-Mn deposit (crust), Pacific (F10-89-CP, D11-1)
- Hydrogenetic Fe-Mn deposit (crust), Magellan Seamounts (No. 0327)
- Hydrothermal manganese deposit, Mariana Arc (TT192, D3-3-II)
- Hydrogenetic Fe-Mn deposit (crust), Pacific (F10-89-CP, D27-2-1)
- North-West Pacific, station 7 (24.3° N 170.3° E)
- Hydrothermal manganese deposit, Yap Arc (F11-90-CP, D11-9-3)
- North-West Pacific, station 1 (34.5° N 147.0° E)
Cite this page
IsoFind Atlas (2026). Caiwei Guyot (Magellan Seamounts), Jiaolong dives 69 to 71, isotope signatures. https://www.isofind.tech/isotopes/en/sites/guyot-caiwei-monts-sous-marins-de-magellan-plongees-69-a-71-du-jiaolong/ (accessed 2026-10-21).
@misc{isofind2026caiweiguyotmagellanseamountsj,
title = {Caiwei Guyot (Magellan Seamounts), Jiaolong dives 69 to 71, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/guyot-caiwei-monts-sous-marins-de-magellan-plongees-69-a-71-du-jiaolong/},
note = {Accessed 2026-10-21}
}Updated : 2026-10-21