noaa-lake-21951 Peruvian Andes Proglacial Lakes 15,000 Year Sediment Data Stansell, N.D.; Licciardi, J.M.; Rodbell, D.; Mark, B.G. Peruvian Andes Proglacial Lakes 15,000 Year Sediment Data 2017-04-18 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/21951 Investigator N.D. Stansell Investigator J.M. Licciardi Investigator D. Rodbell Investigator B.G. Mark 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 physical properties earth science paleoclimate paleolimnology geochemistry geoscientificInformation 16325 cal yr BP -65 cal yr BP Complete -9.8167 -9.8 -77.3 -77.3 4260 4290 Continent South America Peru Laguna Queshquecocha>LATITUDE -9.8>LONGITUDE -77.3 Continent South America Peru Upper Laguna Queshquecocha>LATITUDE -9.8167>LONGITUDE -77.3 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 Nathan D. Stansell, Joseph M. Licciardi, Donald T. Rodbell, Bryan G. Mark 2017 Geophysical Research Letters 10.1002/2016GL072408 http://onlinelibrary.wiley.com/doi/10.1002/2016GL072408/full

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.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2017xrf.txt Formatted Text Data File; Laguna Queshquecocha XRF Elemental Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2017dens.txt Formatted Text Data File; Laguna Queshquecocha Bulk Density and Clastic Flux Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2017gff.txt Formatted Text Data File; Upper Laguna Queshquecocha Glacial Flour Flux Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11