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Solimões River (Amazon basin), sediment profiles

Amazonas, Brazil

Rivers and surface water

Type
River or surface water

Andean catchment: metasedimentary and felsic to intermediate igneous rocks. 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

ValueRangenMineral or matrixSource
0.175 ± 0.028 ‰0.135 / 0.202 ‰5suspended sediment (depth profile)
Mean and standard deviation recalculated from 5 analyses, +0.135 to +0.202 (AM05-06 (14 m) +0.135; AM06-10 (22 m) +0.185; AM06-11 (15 m) +0.202; AM06-13 (5 m) +0.196; AM06-15 (25 m) +0.159). Published mean +0.175 ‰. Published mean suspension - bedload offset for this river: +0.054 ‰.
Aarons et al. (2023), Titanium transport and isotopic fractionation in the Critical Zone,…
0.122 ± 0.012 ‰0.114 / 0.136 ‰3bedload
Mean and standard deviation recalculated from 3 analyses, +0.114 to +0.136 (AM06-02 +0.136; AM06-03 +0.116; AM06-05 +0.114). Published mean +0.122 ‰. Published mean suspension - bedload offset for this river: +0.054 ‰.
Aarons et al. (2023), Titanium transport and isotopic fractionation in the Critical Zone,…

Deposits of the same type

Cite this page

IsoFind Atlas (2026). Solimões River (Amazon basin), sediment profiles, isotope signatures. https://www.isofind.tech/isotopes/en/sites/rio-solimoes-amazonie-sediments-en-profil/ (accessed 2026-10-21).

@misc{isofind2026solimoesriveramazonbasinsedim,
  title = {Solimões River (Amazon basin), sediment profiles, isotope signatures},
  author = {{IsoFind Atlas}},
  year = {2026},
  url = {https://www.isofind.tech/isotopes/en/sites/rio-solimoes-amazonie-sediments-en-profil/},
  note = {Accessed 2026-10-21}
}

Updated : 2026-10-21