Madeira River (Amazon basin), sediment profiles
Madeira basin, Brazil
Rivers and surface water
- Type
- River or surface water
Catchment of Palaeozoic and Mesozoic metasedimentary rocks and organic-rich shales. Depth profiles from the field campaigns of Bouchez et al. (2011) and Dellinger et al. (2014). Aarons et al. (2023): suspended sediment heavier than bedload, which concentrates dense Fe-Ti oxides and zircon; delta49Ti correlated with Al/Zr, with no clear link to depth or modal grain size.
δ49Ti in ‰ (per mil) Values of the same system
Standard : OL-Ti
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.203 ± 0.01 ‰ | 0.194 / 0.217 ‰ | 6 | suspended sediment (depth profile) Mean and standard deviation recalculated from 6 analyses, +0.194 to +0.217 (AM05-15 (23 m) +0.194; AM05-18 (8 m) +0.205; AM05-19 (3 m) +0.217; AM06-37 (10 m) +0.195; AM06-39 (11 m) +0.196; AM06-43 (0 m) +0.212). Published mean +0.203 ‰. Published mean suspension - bedload offset for this river: +0.056 ‰. | Aarons et al. (2023), Titanium transport and isotopic fractionation in the Critical Zone,… |
| 0.147 ± 0.064 ‰ | 0.101 / 0.192 ‰ | 2 | bedload Mean and standard deviation recalculated from 2 analyses, +0.101 to +0.192 (AM05-24 +0.192; AM06-44 +0.101). Published mean +0.147 ‰. Published mean suspension - bedload offset for this river: +0.056 ‰. | Aarons et al. (2023), Titanium transport and isotopic fractionation in the Critical Zone,… |
Deposits of the same type
- Canal Rosso, middle reach (CR2) Bolivia
- Canal Rosso, downstream (CR3) Bolivia
- Lake Uru-Uru (LUU) Bolivia
- Vinto River, station V1 Bolivia
- Oruro urban canal (URB) Bolivia
- Paria River (PAR), geochemical background Bolivia
- Cala-Cala River (CC), geochemical background Bolivia
- Cobica River at the bridge (CO-1) Spain
Cite this page
IsoFind Atlas (2026). Madeira River (Amazon basin), sediment profiles, isotope signatures. https://www.isofind.tech/isotopes/en/sites/rio-madeira-amazonie-sediments-en-profil/ (accessed 2026-10-21).
@misc{isofind2026madeirariveramazonbasinsedime,
title = {Madeira River (Amazon basin), sediment profiles, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/rio-madeira-amazonie-sediments-en-profil/},
note = {Accessed 2026-10-21}
}Updated : 2026-10-21