Wadi Natrun lakes (Um Risha, El Beida, El Gaar)
Wadi Natrun, about 110 km northwest of Cairo, Égypte
Sediments
- Type
- Sediment
Saline alkaline lakes (pH 8.5 to 9.5) west of the present delta; sediments of the ancient Nile delta. Vilela et al. (2025): two groups, surface (≤ 10 cm) lighter than the 40 and 50 cm levels.
δ49Ti in ‰ (per mil) Values of the same system
Standard : OL-Ti
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.15 ± 0.03 ‰ | 0.12 / 0.19 ‰ | 5 | lake sediment (bulk) Mean and standard deviation recalculated from 5 analyses, +0.12 to +0.19 (Um-Risha 10 cm +0.12; Um-Risha 40 cm +0.19; El-Beida 0-3 cm +0.15; El-Beida 50 cm +0.17; El-Gaar 0-2 cm +0.13). El-Beida 50 cm: organic-rich silty clay; the others: sandy silts. Published mean of the 14 sediments (Wadi Natrun and Qarun) +0.149 ± 0.015 ‰ (2SE). | Vilela et al. (2025), Titanium, strontium and neodymium isotopic compositions of Lake Qar… |
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). Wadi Natrun lakes (Um Risha, El Beida, El Gaar), isotope signatures. https://www.isofind.tech/isotopes/en/sites/lacs-du-wadi-natrun-um-risha-el-beida-el-gaar/ (accessed 2026-10-21).
@misc{isofind2026wadinatrunlakesumrishaelbeida,
title = {Wadi Natrun lakes (Um Risha, El Beida, El Gaar), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/lacs-du-wadi-natrun-um-risha-el-beida-el-gaar/},
note = {Accessed 2026-10-21}
}Updated : 2026-10-21