noaa-lake-8650 Bear Lake, Utah-Idaho 250,000 Year Proxy Data Kaufman, D.S.; Reheis, M.C.; Simmons, K.R.; Bright, J.; Dean, W.E.; Rosenbaum, J.G.; Moser, K.A.; Anderson, R.S.; Colman, S.M.; Heil, C.W.; Jiménez-Moreno, G. Bear Lake, Utah-Idaho 250,000 Year Proxy Data 2009-03-01 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/8650 Investigator D.S. Kaufman Investigator M.C. Reheis Investigator K.R. Simmons Investigator J. Bright Investigator W.E. Dean Investigator J.G. Rosenbaum Investigator K.A. Moser Investigator R.S. Anderson Investigator S.M. Colman Investigator C.W. Heil Investigator G. Jiménez-Moreno earth science paleoclimate paleolimnology quartz,sediment,null,weight percent,null,paleolimnology,null,x-ray diffraction,N,null earth science paleoclimate paleolimnology calcite,sediment,null,weight percent,null,paleolimnology,null,x-ray diffraction,N,null earth science paleoclimate paleolimnology delta 18O,sediment,null,per mil VPDB,null,paleolimnology,null,isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology delta 18O,ostracod,null,per mil VPDB,null,paleolimnology,null,isotope ratio mass spectrometry,N,Cytherissa lacustris earth science paleoclimate paleolimnology identified ostracod,null,null,count per gram,null,paleolimnology,null,null,N,Candona sp. 3 earth science paleoclimate paleolimnology identified ostracod,null,null,count per gram,null,paleolimnology,null,null,N,Candona sp. 4 earth science paleoclimate paleolimnology identified ostracod,null,null,count per gram,null,paleolimnology,null,null,N,Candona sp. 7 earth science paleoclimate paleolimnology Simpson diversity index,null,null,dimensionless,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Achnanthes saccula earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Fragilaria brevistriata rhombic earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Fragilaria brevistriata oval earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Fragilaria construens var venter earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Fragilaria leptostauron earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Fragilaria ulna earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Nitzschia fonticola earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Stephanodiscus niagarae earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,centric diatoms earth science paleoclimate paleolimnology delta 18O,ostracod,null,per mil VPDB,null,paleolimnology,null,isotope ratio mass spectrometry,N,Candona sp. earth science paleoclimate paleolimnology total species,null,null,count,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cocconeis placentula earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cymbella mesiana earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Fragilaria brevistriata total earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula cryptocephala earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cyclotella glabriuscula earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,pennate diatoms earth science paleoclimate paleolimnology identified ostracod,null,null,count per gram,null,paleolimnology,null,null,C,Limnocythere sp. juvenile earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Fragilaria pinnata earth science paleoclimate paleolimnology calcium carbonate,sediment,null,weight percent,null,paleolimnology,null,carbon coulometry,N,null earth science paleoclimate paleolimnology 87Sr/86Sr,soluble acetic acid,null,dimensionless,null,paleolimnology,null,thermal ionization mass spectrometry,N,null earth science paleoclimate paleolimnology weight,sediment,null,gram,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Amphora ovalis earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Caloneis sp. BL1 earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cocconeis placentula var. lineata earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Diatoma tenue var. elongatum earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Epithemia frickei earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Fragilaria pinnata var accuminata earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula capitata var lueneburgensis earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula cryptotenella earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Surirella angusta earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cyclotella meneghiniana earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cyclotella ocellata earth science paleoclimate paleolimnology sample identification,null,null,null,null,paleolimnology,null,null,C,null earth science paleoclimate paleolimnology identified ostracod,null,null,count per gram,null,paleolimnology,null,null,C,Cytherissa lacustris juvenile earth science paleoclimate paleolimnology notes,null,null,null,null,paleolimnology,null,null,C,null earth science paleoclimate paleolimnology depth,null,null,meter,null,paleolimnology,null,x-ray diffraction,N,null earth science paleoclimate paleolimnology delta 13C,sediment,null,per mil VPDB,null,paleolimnology,null,isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology total diatoms,null,null,count,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Achnanthes lanceolata earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Amphora inariensis earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula oblonga earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Nitzschia sp. unid earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Aulacoseira granulata earth science paleoclimate paleolimnology plagioclase feldspar series,sediment,null,weight percent,null,paleolimnology,null,x-ray diffraction,N,null earth science paleoclimate paleolimnology aragonite,sediment,null,weight percent,null,paleolimnology,null,x-ray diffraction,N,null earth science paleoclimate paleolimnology delta 13C,ostracod,null,per mil VPDB,null,paleolimnology,null,isotope ratio mass spectrometry,N,Candona sp. earth science paleoclimate paleolimnology identified ostracod,null,null,count per gram,null,paleolimnology,null,null,N,Cytherissa lacustris earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Amphora pediculus earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Fragilaria brevistriata earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Fragilaria constricta earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Fragilaria construens earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Fragilaria tenera earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula tuscula earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Rhopalodia gibba earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Aulacoseira islandica earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cyclotella bodanica earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Stephanodiscus medius earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Stephanodiscus minutulus earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Stephanodiscus sp. BL1 earth science paleoclimate paleolimnology dolomite,sediment,null,weight percent,null,paleolimnology,null,x-ray diffraction,N,null earth science paleoclimate paleolimnology identified ostracod,null,null,count per gram,null,paleolimnology,null,null,N,Candona sp. 1 earth science paleoclimate paleolimnology identified ostracod,null,null,count per gram,null,paleolimnology,null,null,N,unspecified ostracod earth science paleoclimate paleolimnology total ostracods,null,null,count per gram,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Achnanthes curtissima earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Fragilaria biceps earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Fragilaria virescens earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Pinnularia viridis earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cyclotella michiganiana earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cyclotella rossii earth science paleoclimate paleolimnology organic carbon,sediment,null,weight percent,null,paleolimnology,null,carbon coulometry,N,null earth science paleoclimate paleolimnology identified ostracod,null,null,count per gram,null,paleolimnology,null,null,N,Candona sp. 2 earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Caloneis schumanniana earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Epithemia adnata earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula pupula earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cyclotella planktonica earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Stephanodiscus neoastraea earth science paleoclimate paleolimnology total planktic diatoms,null,null,percent,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology delta 13C,ostracod,null,per mil VPDB,null,paleolimnology,null,isotope ratio mass spectrometry,N,Cytherissa lacustris earth science paleoclimate paleolimnology 87Sr/86Sr,insoluble acetic acid,null,dimensionless,null,paleolimnology,null,thermal ionization mass spectrometry,N,null earth science paleoclimate paleolimnology identified ostracod,null,null,count per gram,null,paleolimnology,null,null,N,Candona sp. 5 earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Diploneis elliptica earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula rhynchocephala earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cyclotella sp. earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Stephanodiscus sp. unid earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Stephanodiscus hantzschii earth science paleoclimate paleolimnology geochemistry geoscientificInformation 249950 cal yr BP 0 cal yr BP Complete 42 42 -111.3333 -111.3333 1805 1805 Continent North America United States Of America Utah Bear Lake Utah/Idaho>LATITUDE 42>LONGITUDE -111.3333 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

325 Broadway, E/NE31

Boulder CO 80305-3328 USA online ASCII Kaufman, D.S., Bright, J., Dean, W.E., Rosenbaum, J.G., Moser, K.A., Anderson, R.S., Colman, S.M., Heil, C.W., Jiménez-Moreno, G., Reheis, M.C., Simmons, K.R. 2009. A quarter-million years of paleoenvironmental change at Bear Lake, Utah and Idaho. Geological Society of America Special Paper, 450, 311-351.

A continuous, 120-m-long core (BL00-1) from Bear Lake, Utah and Idaho, contains evidence of hydrologic and environmental change over the last two glacial-interglacial cycles. The core was taken at 41.95°N, 111.31°W, near the depocenter of the 60-m-deep, spring-fed, alkaline lake, where carbonate-bearing sediment has accumulated continuously. Chronological control is poor but indicates an average sedimentation rate of 0.54 mm yrŋ1. Analyses have been completed at multi-centennial to millennial scales, including (in order of decreasing temporal resolution) sediment magnetic properties, oxygen and carbon isotopes on bulk-sediment carbonate, organic- and inorganic carbon contents, palynology; mineralogy (X-ray diffraction), strontium isotopes on bulk carbonate, ostracode taxonomy, oxygen and carbon isotopes on ostracodes, and diatom assemblages. Massive silty clay and marl constitute most of the core, with variablecarbonate content (average = 31 ą 19%) and oxygen-isotopic values (d18O ranging from -18 per mil to -5 per mil in bulk carbonate). These variations, as well as fluctuations of biological indicators, reflect changes in the water and sediment discharged from the glaciated headwaters of the dominant tributary, Bear River, and the processes thatinfluenced sediment delivery to the core site, including lake-level changes. Although its influence has varied, Bear River has remained a tributary to Bear Lake during most of the last quarter-million years. The lake disconnected from the river and, except for a few brief excursions, retracted into a topographically closed basin during global interglaciations (during parts of marine isotope stages 7, 5, and 1). These intervalscontain up to 80% endogenic aragonite with high d18O values (average = -5.8 ą 1.7 per mil), indicative of strongly evaporitic conditions. Interglacial intervals also are dominated by small, benthic/tychoplanktic fragilarioid species indicative of reduced habitat availabilityassociated with low lake levels, and they contain increased high-desert shrub and Juniperus pollen and decreased forest and forest-woodland pollen. The 87Sr/86Sr values (>0.7100) also increase, and the ratio of quartz to dolomite decreases, as expected in the absence of Bear River inflow. The changing paleoenvironments inferred from BL00-1 generally are consistent with other regional and global records of glacial-interglacialfluctuations; the diversity of paleoenvironmental conditions inferred fromBL00-1 also reflects the influence of catchment-scale processes. STUDY NOTES: Appendices A-D from Kaufman et al. 2009, containing mineralogy, isotope, ostracode, and diatom data from Bear Lake core BL00-1.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/utah/bearlake/bearlake2009bl00-1.xls GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/utah/bearlake/bearlake2009bl00-1.txt USA/NOAA DIF Version 9.8.4 2019-03-27 2019-03-27