Radiocarbon dates of plant materials from packrat middens in caves below the elevation of the last high stand of Pleistocene Lake Lahontan, in conjunction with radiocarbon dates of ancient archaeological materials, provide evidence that the last high stand terminated before 12,070 yr B.P. This new information suggests that the last major fluctuation in the level of Lake Lahontan was approximately synchronous with those of Lakes Bonneville and Russell, and that these three lakes probably responded contemporaneously to the same regional paleoclimatic changes. ?? 1986.
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A revised chronology for the last Pleistocene Lake cycle in the central Lahontan Basin