Peruvian margin at 11° S, core 449-MUC19 (319 m)
Peruvian shelf and slope, Peru
Sediments
- Type
- Sediment
Multicorer from cruise M77/1 on the 11° S transect, Peruvian oxygen minimum zone. Pore waters are as heavy as or heavier than biogenic opal: precipitation of authigenic alumino-silicates about 2 ‰ lighter. Station coordinates not given in the article. Modelled core; bottom water +1.40 ± 0.18 ‰. Site not precisely located: the source gives no coordinates.
δ30Si in ‰ (per mil) Values of the same system
Standard : NBS 28
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 1.64 ± 0.17 ‰ | 1.36 / 1.93 ‰ | 8 | pore water (0.2 µm filtered), dissolved silicon Mean and standard deviation recalculated from 8 samples. Pore waters from 0 to 33 cm, Table 1. | Ehlert et al. (2016), Stable silicon isotope signatures of marine pore waters - Biogenic … |
| 0.69 ± 0.39 ‰ | 0.3 / 1.2 ‰ | 6 | extracted biogenic opal (diatoms) Mean and standard deviation recalculated from 6 samples. Biogenic opal from 0 to 48 cm, Table 1 (Modern Warm Period to Transition sediments). | Ehlert et al. (2016), Stable silicon isotope signatures of marine pore waters - Biogenic … |
| 1.4 ‰ | 1 | bottom water Bottom water overlying the core (41.4 µM silicon). | Ehlert et al. (2016), Stable silicon isotope signatures of marine pore waters - Biogenic … |
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). Peruvian margin at 11° S, core 449-MUC19 (319 m), isotope signatures. https://www.isofind.tech/isotopes/en/sites/marge-peruvienne-a-11-s-carotte-449-muc19-319-m/ (accessed 2026-10-13).
@misc{isofind2026peruvianmarginat11score449muc,
title = {Peruvian margin at 11° S, core 449-MUC19 (319 m), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/marge-peruvienne-a-11-s-carotte-449-muc19-319-m/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13