Bear Lake, Utah-Idaho 19,000 Year Pollen Data Doner, L.A. Doner, L.A. earth science/paleoclimate/paleolimnology (Bear Lake Utah/Idaho>LATITUDE 42>LONGITUDE -111.3333) Pollen analysis of sediments from core BL96-2 at Bear Lake (42°N, 111°20'W), located on the Utah-Idaho border in America's western cordillera, provides a record of regional vegetation changes from full glacial to the late Holocene. The reconstructed vegetation records are mostly independent of Bear Lake's hydrologic state and are therefore useful for identifying times when climate forcing contributed to lake changes. The Bear Lake pollen results indicate that significant changes in the Bear Lake vegetation occurred during the intervals 15,300-13,900, 12,000-10,000, 7500-6700, 6700-5300, 3800-3600, and 2200-1300 cal yr B.P. These intervals coincide with regional shifts in vegetation and climate, documented in pollen, isotope and biogeographicrecords in the Basin and Range region, suggesting that large-scale climatewas the primary forcing factor for these intervals of change. Maximum aridity and warmth is indicated from 12,000 to 7500 cal yr B.P., followed by intervals of generally more mesic and cool conditions, especially after 7500 cal yr B.P. STUDY NOTES: Pollen data from sediment core 96-2, Bear Lake, Utah-Idaho (USA). NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Doner, L.A. 2009-03-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/8653 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/utah/bearlake/bearlake2009pollen.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/utah/bearlake/bearlake2009pollen.txt English https://www.ncdc.noaa.gov/paleo/study/8653 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/utah/bearlake/bearlake2009pollen.txt Doner, L. 2009. A 19,000-year vegetation and climate record for Bear Lake, Utah and Idaho. Geological Society of America Special Paper, 450, 217-227. START YEAR: 18950 cal yr BP * END YEAR: 0 cal yr BP -111.3333 42 -111.3333 42