• Main Authors: Gideon M. Henderson A, Brenda L. Hall B, Andrew Smith A, Laura F. Robinson A
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 2005
• Subjects: Uranium isotopes; Dry Valleys; Antarctica; Weathering; Lake chemistry; Bonney; Vanda; Antarc*
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.500.2652; http://www.whoi.edu/cms/files/Henderson_2006_Chemgeol_21691.pdf

Control on (234U / 238U) in lake wa partially decayed. In older lakes, (234U / 238U) is significantly higher than that in the inputs due to addition of recoil 234U from Radioactive 234U is formed from the decay of long-lived 238U via two short-lived intermediate isotopes. imited by decay of Chemical Geology 226 (200 * Corresponding author.sediments underlying the lake. The size of the deviation from secular equilibrium can only be explained, however, if recoil from a large area of sediment is considered. This is reasonable for the two lakes with particularly high (234U / 238U) (Bonney, Vanda) which are both relicts of much larger lakes present during the last glacial period. On the basis of this study, the addition of recoil 234U to lake water is expected to be a general feature, and to cause a noticeable increase in (234U /238U) for lakes with a U residence time of