Lake-size variations in the Lahontan and Bonneville basins between 13,000 and 9000 14C yr B.P.
Abstract Recessions of Lakes Lahontan and Bonneville that commenced ∼13,500 14 C yr B.P. were interrupted at ⪖11,500 14 C yr B.P. in the Lahontan basin and ∼12,200 14 C yr B.P. in the Bonneville basin by relatively large perturbations in lake level that persisted for ∼ 2000 years. Minor glacial readvances in the Sierra Nevada and White Mountains of California-Nevada occurred during the latter half of this interval (between 11,000 and 9700 14 C yr B.P.). The hydrologic response of Lakes Lahontan and Bonneville and the mountain glacial advances were concurrent with the Allerod/Younger Dryas climatic intervals recorded in vegetational and glacial records of western and central Europe.