TY - GEN
T1 - Oxygen isotopes in hydrothermal sinters as an indicator of Quaternary lakewater compositions in the Kenya Rift Valley
AU - Darling, W. G.
AU - Spiro, B.
PY - 2007
Y1 - 2007
N2 - Siliceous sinter deposits deriving from hydrothermal activity during the Quaternary are found at various elevations on dormant volcanic centres in the northern Kenya Rift Valley, East Africa. These sinters have been dated by U-series methods, giving ages from 7 ka to over 500 ka BP (Sturchio et al, 1993). Given various assumptions, the δ 18O-SiO 2 compositions of the sinters can be converted back to δ 18O- H 2O values to compare with lakewater compositions inferred from stromatolites. The data suggest that sinters can assist in constraining palaeo-hydrological reconstructions for the late Quaternary in the East African Rift Valley region, particularly during the cooler episodes. Whether sinters can be used in this way further back in the geological record is still under debate.
AB - Siliceous sinter deposits deriving from hydrothermal activity during the Quaternary are found at various elevations on dormant volcanic centres in the northern Kenya Rift Valley, East Africa. These sinters have been dated by U-series methods, giving ages from 7 ka to over 500 ka BP (Sturchio et al, 1993). Given various assumptions, the δ 18O-SiO 2 compositions of the sinters can be converted back to δ 18O- H 2O values to compare with lakewater compositions inferred from stromatolites. The data suggest that sinters can assist in constraining palaeo-hydrological reconstructions for the late Quaternary in the East African Rift Valley region, particularly during the cooler episodes. Whether sinters can be used in this way further back in the geological record is still under debate.
UR - https://www.scopus.com/pages/publications/84858019305
M3 - Conference contribution
AN - SCOPUS:84858019305
SN - 9780415451383
T3 - Water-Rock Interaction - Proceedings of the 12th International Symposium on Water-Rock Interaction, WRI-12
SP - 1475
EP - 1479
BT - Water-Rock Interaction - Proceedings of the 12th International Symposium on Water-Rock Interaction, WRI-12
T2 - 12th International Symposium on Water-Rock Interaction, WRI-12
Y2 - 31 July 2007 through 4 August 2007
ER -