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This dataset includes tables with physical information and isotopic data that are used to calculate uranium-series ages (230Th/U method) and initial 234U/238U activity ratios on a suite of mastodon bones from the Cerutti Mastodon site near San Diego, CA area.
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Chloropyron maritimum subsp. maritimum population counts at Sweetwater Marsh National Wildlife Refuge, California, and tide and weather data from San Diego, California, are used to explain interannual variation in Chloropyron counts and to predict past population counts.


    map background search result map search result map U-series isotope data used to date a 130,000-year-old archaeological site in southern California, U.S.A. Chloropyron maritimum subsp. maritimum population counts, tide, and weather data for Sweetwater Marsh National Wildlife Refuge U-series isotope data used to date a 130,000-year-old archaeological site in southern California, U.S.A. Chloropyron maritimum subsp. maritimum population counts, tide, and weather data for Sweetwater Marsh National Wildlife Refuge