title: Beryllium-10 dating of the duration and retreat of the last pinedale glacial sequence.
abstract: Accurate terrestrial glacial chronologies are needed for comparison with the marine record to establish the dynamics of global climate change during transitions from glacial to interglacial regimes. Cosmogenic beryllium-10 measurements in the Wind River Range indicate that the last glacial maximum (marine oxygen isotope stage 2) was achieved there by 21,700 +/- 700 beryllium-10 years and lasted 5900 years. Ages of a sequence of recessional moraines and striated bedrock surfaces show that the initial deglaciation was rapid and that the entire glacial system retreated 33 kilometers to the cirque basin by 12,100 +/- 500 beryllium-10 years.
authors.forename: J C
authors.initials: JC
authors.lastname: Gosse
authors.forename: J
authors.initials: J
authors.lastname: Klein
authors.forename: B
authors.initials: B
authors.lastname: Lawn
authors.forename: R
authors.initials: R
authors.lastname: Middleton
authors.forename: E B
authors.initials: EB
authors.lastname: Evenson