Jenny Lake, Wyoming 14,500 Year Sediment Geochemical Data Larsen, D.J.; Finkenbinder, M.S.; Abbott, M.B.; Ofstun, A.R. Larsen, D.J. Finkenbinder, M.S. Abbott, M.B. Ofstun, A.R. earth science/paleoclimate/paleolimnology (mineral matter,sediment,null,percent,null,paleolimnology,null,null,N,calculated as the residue of sediment after subtracting organic matter and biogenic silica components using: Clastic% = 100 _x0004_ x (1 - (TOM + BSi))) earth science/paleoclimate/paleolimnology (density,sediment,null,gram per cubic centimeter,null,paleolimnology,null,null,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 (organic matter,sediment,null,percent,null,paleolimnology,null,loss on ignition,N,550 degrees C for 4 hours) earth science/paleoclimate/paleolimnology (biogenic silica,sediment,null,percent,null,paleolimnology,null,spectrophotometry,N,null) earth science/paleoclimate/paleolimnology (carbon/nitrogen,sediment,null,dimensionless,null,paleolimnology,null,elemental analysis,N,total organic carbon/total nitrogen) earth science/paleoclimate/paleolimnology (organic carbon,sediment,null,gram per square centimeter per kiloyear,null,paleolimnology,null,elemental analysis,N,null) earth science/paleoclimate/paleolimnology (mineral matter,sediment,null,gram per square centimeter per kiloyear,null,paleolimnology,null,null,N,calculated as the residue of sediment after subtracting organic matter and biogenic silica components using: Clastic% = 100 _x0004_ x (1 - (TOM + BSi))) earth science/paleoclimate/paleolimnology (age,null,null,calendar year before present,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (organic carbon,sediment,null,percent,null,paleolimnology,null,elemental analysis,N,null) earth science/paleoclimate/paleolimnology (delta 15N,sediment,null,per mil AIR,null,paleolimnology,null,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/paleolimnology (organic matter,sediment,null,gram per square centimeter per kiloyear,null,paleolimnology,null,loss on ignition,N,550 degrees C for 4 hours) earth science/paleoclimate/paleolimnology (biogenic silica,sediment,null,gram per square centimeter per kiloyear,null,paleolimnology,null,spectrophotometry,N,null) earth science/paleoclimate/paleolimnology earth science/paleoclimate/paleolimnology earth science/paleoclimate/paleolimnology (Jenny Lake Wyoming>LATITUDE 43.75054>LONGITUDE -110.73428) Sediments contained in lake basins positioned along the eastern front of the Teton Mountain Range preserve a continuous and datable record of deglaciation and postglacial environmental conditions. Here, we develop a multiproxy glacier and paleoenvironmental record using a combination of seismic reflection data and multiple sediment cores recovered from Jenny Lake and other nearby lakes. Age control of Teton lake sediments is established primarily through radiocarbon dating and supported by the presence of two prominent rhyolitic tephra deposits that are geochemically correlated to the widespread Mazama (~7.6 ka) and Glacier Peak (~13.6 ka) tephra layers. Multiple glacier and climate indicators, including sediment accumulation rate, bulk density, clastic sediment concentration and flux, organic matter (concentration, flux, d13C, d15N, and C/N ratios), and biogenic silica, track changes in environmental conditions and landscape development. Sediment accumulation at Jenny Lake began centuries prior to 13.8 ka and cores from three lakes demonstrate that Teton glacier extents were greatly reduced by this time. Persistent ice retreat in Cascade Canyon was slowed by an interval of small glacier activity between ~13.5 and 11.5 ka, prior to the end of glacial lacustrine sedimentation ~11.5 ka. The transition to non-glacial sediments marks the onset of Holocene conditions at Jenny Lake and reflects a shift toward warmer summers, increased vegetation cover, and landscape stability in the Tetons. We discuss the Teton lake sediment records within the context of other regional studies in an effort to construct a comprehensive overview of deglaciation and postglacial environmental conditions at Grand Teton National Park. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Larsen, D.J. Investigator : Finkenbinder, M.S. Investigator : Abbott, M.B. Investigator : Ofstun, A.R. 2016-05-10 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/20128 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/wyoming/jenny2016.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/wyoming/jenny2016.txt English https://www.ncdc.noaa.gov/paleo/study/20128 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/wyoming/jenny2016.txt Darren J. Larsen, Matthew S. Finkenbinder, Mark B. Abbott, Adam R. Ofstun2016Deglaciation and postglacial environmental changes in the Teton Mountain Range recorded at Jenny Lake, Grand Teton National Park, WYQuaternary Science Reviews13862-7510.1016/j.quascirev.2016.02.024http://www.sciencedirect.com/science/article/pii/S0277379116300567 START YEAR: 14552 cal yr BP * END YEAR: 69 cal yr BP -110.73428 43.75054 -110.73428 43.75054