Peruvian Andes Proglacial Lakes 15,000 Year Sediment Data Stansell, N.D.; Licciardi, J.M.; Rodbell, D.; Mark, B.G. Stansell, N.D. Licciardi, J.M. Rodbell, D. Mark, B.G. earth science/paleoclimate/paleolimnology (mineral matter,sediment,range lower bound,gram per square centimeter per year,null,paleolimnology,null,null,N,maximum possible age) earth science/paleoclimate/paleolimnology (age,null,range lower bound,calendar year before present,null,paleolimnology,null,null,N,Maximum possible age) earth science/paleoclimate/paleolimnology (mineral matter,sediment,range upper bound,gram per square centimeter per year,null,paleolimnology,null,null,N,minimum possible age) earth science/paleoclimate/paleolimnology (zirconium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (depth,null,null,centimeter,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (age,null,range lower bound,calendar year before present,null,paleolimnology,null,null,N,Stansell BACON max ages) earth science/paleoclimate/paleolimnology (mineral matter,sediment,null,gram per square centimeter per year,null,paleolimnology,null,null,N,Glacial Flour Flux at maximum possible age) earth science/paleoclimate/paleolimnology (density,sediment,null,gram per cubic centimeter,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (mineral matter,sediment,null,percent,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (age,null,range upper bound,calendar year before present,null,paleolimnology,null,null,N,Stansell BACON min ages) earth science/paleoclimate/paleolimnology (age,null,range upper bound,calendar year before present,null,paleolimnology,null,null,N,Minimum possible age) earth science/paleoclimate/paleolimnology (strontium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (principal component,null,null,dimensionless,null,paleolimnology,null,null,N,first PC of XRF data) earth science/paleoclimate/paleolimnology (mineral matter,sediment,null,gram per square centimeter per year,null,paleolimnology,null,null,N,Glacial Flour Flux at minimum possible age) earth science/paleoclimate/paleolimnology (silicon,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology earth science/paleoclimate/paleolimnology (Laguna Queshquecocha>LATITUDE -9.8>LONGITUDE -77.3) (Upper Laguna Queshquecocha>LATITUDE -9.8167>LONGITUDE -77.3) Evaluating the timing and style of past glacier fluctuations in the tropical Andes is important for our scientific understanding of global environmental change. Terrestrial cosmogenic nuclide (TCN) ages on moraine boulders combined with 14C-dated clastic sediment records from alpine lakes document glacial variability in the Cordillera Blanca of Peru during the last ca. 16 ka. Late Glacial ice extents culminated at the start of the Antarctic Cold Reversal (ACR) and began retracting prior to the Younger Dryas (YD). Multiple moraine crests dating to the early Holocene mark brief readvances or stillstands that punctuated overall retreat of the Queshque valley glacier terminus during this interval. Glaciers were less extensive during the middle Holocene before readvancing during the latest Holocene. These records suggest that tropical Atlantic and Pacific ocean-atmospheric processes exerted temporally variable forcing of Late Glacial and Holocene glacial changes in the Peruvian Andes. STUDY NOTES: Sediment geochemical and physical properties data from 2 proglacial lakes in the Queshque valley, Peruvian Andes. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Stansell, N.D. Investigator : Licciardi, J.M. Investigator : Rodbell, D. Investigator : Mark, B.G. 2017-04-18 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/21951 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2017xrf.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2017dens.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2017gff.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2017xrf.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2017dens.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2017gff.txt English https://www.ncdc.noaa.gov/paleo/study/21951 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2017xrf.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2017dens.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2017gff.txt Nathan D. Stansell, Joseph M. Licciardi, Donald T. Rodbell, Bryan G. Mark2017Tropical ocean-atmospheric forcing of Late Glacial and Holocene glacier fluctuations in the Cordillera Blanca, PeruGeophysical Research Letters10.1002/2016GL072408http://onlinelibrary.wiley.com/doi/10.1002/2016GL072408/full START YEAR: 16325 cal yr BP * END YEAR: -65 cal yr BP -77.3 -9.8167 -77.3 -9.8