Blue Lake, Utah 45KYr Stable Isotope and Geochemical Data Benson, L.V.; Lund, S.P.; Smoot, J.P.; Rhode, D.E.; Spencer, R.J.; Verosub, K.L.; Louderback, L.A.; Johnson, C.A.; Rye, R.O.; Negrini, R. Benson, L.V. Lund, S.P. Smoot, J.P. Rhode, D.E. Spencer, R.J. Verosub, K.L. Louderback, L.A. Johnson, C.A. Rye, R.O. Negrini, R. hydrology earth science/paleoclimate/paleolimnology (inorganic carbon,sediment,null,percent,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (delta 13C,calcium carbonate,null,per mil PDB,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (depth,null,null,centimeter,null,paleolimnology,null,null,N,depth below top of drive A) earth science/paleoclimate/paleolimnology (calcite,sediment,null,percent,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (dolomite,sediment,null,percent,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (aragonite,sediment,null,percent,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (sample identification,null,null,null,null,paleolimnology,null,null,C,null) earth science/paleoclimate/paleolimnology (depth,null,null,centimeter,null,paleolimnology,null,null,N,depth within a single core drive) earth science/paleoclimate/paleolimnology (depth,null,null,centimeter,null,paleolimnology,null,null,N,absolute depth below the marsh surface) earth science/paleoclimate/paleolimnology (calcite,sediment,null,degree,null,paleolimnology,null,null,N,2 theta) earth science/paleoclimate/paleolimnology (age,null,null,calendar kiloyear before present,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (delta 18O,calcium carbonate,null,per mil VSMOW,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology earth science/paleoclimate/paleolimnology earth science/paleoclimate/paleolimnology (Blue Lake BL04-04>LATITUDE 40.499967>LONGITUDE -114.036142) A sediment core taken from the western edge of the Bonneville Basin has provided high-resolution proxy records of relative lake-size change for the period 45.1-10.5 calendar ka (hereafter ka). Age control was provided by a paleomagnetic secular variation (PSV)-based age model for Blue Lake core BL04-4. Continuous records of d18O and total inorganic carbon (TIC) generally match an earlier lake-level envelope based on outcrops and geomorphic features, but with differences in the timing of some hydrologic events/states. The Stansbury Oscillation was found to consist of two oscillations centered on 25 and 24 ka. Lake Bonneville appears to have reached its geomorphic highstand and began spilling at 18.5 ka. The fall from the highstand to the Provo level occurred at 17.0 ka and the lake intermittently overflowed at the Provo level until 15.2 ka, at which time the lake fell again, bottoming out at ~14.7 ka. The lake also fell briefly below the Provo level at ~15.9 ka. Carbonate and d18O data indicate that between 14.7 and 13.1 ka the lake slowly rose to the Gilbert shoreline and remained at about that elevation until 11.6 ka, when it fell again. Chemical and sedimentological data indicate that a marsh formed in the Blue Lake area at 10.5 ka. Relatively dry periods in the BL04-4 records are associated with Heinrich events H1-H4, suggesting that either the warming that closely followed a Heinrich event increased the evaporation rate in the Bonneville Basin and (or) that the core of the polar jet stream (PJS) shifted north of the Bonneville Basin in response to massive losses of ice from the Laurentide Ice Sheet (LIS) during the Heinrich event. The second Stansbury Oscillation occurred during Heinrich event H2, and the Gilbert wet event occurred during the Younger Dryas cold interval. Several relatively wet events in BL04-4 occur during Dansgaard-Oeschger (DO) warm events. The growth of the Bear River glacier between 32 and 17 ka paralleled changes in the values of proxy indicators of Bonneville Basin wetness and terminal moraines on the western side of the Wasatch Mountains have ages ranging from 16.9 to 15.2 ka. This suggests a near synchroneity of change in the hydrologic and cryologic balances occurring in the Bonneville drainage system and that glacial extent was linked to lake size. STUDY NOTES: Stable isotope (d18O and d13C) and geochemical (TIC, aragonite, calcite, dolomite) data from sediment core BL04-4, collected in Blue Lake, Utah. Data coverage extends from 5KYrBP to 45 KYrBP. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Benson, L.V. Investigator : Lund, S.P. Investigator : Smoot, J.P. Investigator : Rhode, D.E. Investigator : Spencer, R.J. Investigator : Verosub, K.L. Investigator : Louderback, L.A. Investigator : Johnson, C.A. Investigator : Rye, R.O. Investigator : Negrini, R. 2014-03-03 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/17015 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/utah/blue2011.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/utah/blue2011.txt English https://www.ncdc.noaa.gov/paleo/study/17015 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/utah/blue2011.txt L.V. Benson, S.P. Lund, J.P. Smoot, D.E. Rhode, R.J. Spencer, K.L. Verosub, L.A. Louderback, C.A. Johnson, R.O. Rye, R.M. Negrini2011The rise and fall of Lake Bonneville between 45 and 10.5 kaQuaternary International2351-257-6910.1016/j.quaint.2010.12.014http://www.sciencedirect.com/science/article/pii/S1040618210004829 START YEAR: 45130 cal yr BP * END YEAR: 5950 cal yr BP -114.036142 40.499967 -114.036142 40.499967