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Western Iceland rivers

Iceland, Islande

Rivers and surface water

Type
River or surface water

Rivers on basalt (basalt -0.35 ‰); island mean +0.63 ± 0.38 ‰ (n = 20). No glaciated catchment exceeds +0.8 ‰, against four out of seven non-glaciated ones; bedrock age plays no role. Borgarfjörður and Sog (Þingvallavatn) catchments; Rayleigh trend. Indicative coordinates (centre of the region), no position per river in the paper.

δ30Si in ‰ (per mil) Values of the same system

Standard : NBS 28

ValueRangenMineral or matrixSource
1.46 ± 0.04 ‰1filtered river water (dissolved silicon), Sog
Sog (IS 01): 0.3 Ma bedrock, 439 km² catchment, 0 % glaciated. 10 kDa ultrafiltrate: +1.51 ‰.
Georg et al. (2007), Silicon isotope variations accompanying basalt weathering in Iceland…
0.66 ± 0.04 ‰1filtered river water (dissolved silicon), Hvítá (Suðurland)
Hvítá (Suðurland) (IS 02): 0.7 Ma bedrock, 1987 km² catchment, 21 % glaciated. Two measuring sessions.
Georg et al. (2007), Silicon isotope variations accompanying basalt weathering in Iceland…
0.21 ± 0.04 ‰1filtered river water (dissolved silicon), Hvítá (Borgarfjörður)
Hvítá (Borgarfjörður) (IS 04): 1.2 Ma bedrock, 970 km² catchment, 9 % glaciated.
Georg et al. (2007), Silicon isotope variations accompanying basalt weathering in Iceland…
1.1 ± 0.04 ‰1filtered river water (dissolved silicon), Norðurá
Norðurá (IS 05): 5.9 Ma bedrock, 391 km² catchment, 0 % glaciated.
Georg et al. (2007), Silicon isotope variations accompanying basalt weathering in Iceland…

Deposits of the same type

Cite this page

IsoFind Atlas (2026). Western Iceland rivers, isotope signatures. https://www.isofind.tech/isotopes/en/sites/rivieres-de-l-ouest-de-l-islande/ (accessed 2026-10-13).

@misc{isofind2026westernicelandriversisotopesi,
  title = {Western Iceland rivers, isotope signatures},
  author = {{IsoFind Atlas}},
  year = {2026},
  url = {https://www.isofind.tech/isotopes/en/sites/rivieres-de-l-ouest-de-l-islande/},
  note = {Accessed 2026-10-13}
}

Updated : 2026-10-13