noaa-lake-18495 Laguna Yanacocha, Peru 13,000 Year Sediment Geochemical Data Stansell, N.D.; Rodbell, D.; Licciardi, J.M.; Sedlak, C.M.; Schweinsberg, A.D.; Huss, E.G.; Delgado, G.M.; Zimmerman, S.R.H.; Finkel, R.C. Laguna Yanacocha, Peru 13,000 Year Sediment Geochemical Data 2015-08-01 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/18495 Investigator N.D. Stansell Investigator D. Rodbell Investigator J.M. Licciardi Investigator C.M. Sedlak Investigator A.D. Schweinsberg Investigator E.G. Huss Investigator G.M. Delgado Investigator S.R.H. Zimmerman Investigator R.C. Finkel earth science paleoclimate paleolimnology depth,null,null,centimeter,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology aluminum,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology zinc,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology strontium,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology sulfur,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology titanium,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology iron,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology principal component,null,null,dimensionless,null,paleolimnology,null,null,N,PC axis #1 earth science paleoclimate paleolimnology age,null,null,calendar year before present,null,paleolimnology,null,null,N,polynomial age model earth science paleoclimate paleolimnology silicon,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology calcium,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology potassium,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology age,null,null,calendar year before present,null,paleolimnology,null,null,N,linear age model earth science paleoclimate paleolimnology manganese,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology rubidium,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology zirconium,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology geochemistry geoscientificInformation 13672 cal yr BP -61 cal yr BP Complete -10.5598 -10.5598 -75.9303 -75.9303 4360 4360 Continent South America Peru Laguna Yanacocha>LATITUDE -10.5598>LONGITUDE -75.9303 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

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Boulder CO 80305-3328 USA online ASCII Nathan D. Stansell, Donald T. Rodbell, Joseph M. Licciardi, Christopher M. Sedlak, Avriel D. Schweinsberg, Elizabeth G. Huss, Grace M. Delgado, Susan H. Zimmerman, and Robert C. Finkel 2015 Geology 43 8 747-750 10.1130/G36735.1 http://geology.gsapubs.org/content/43/8/747.abstract

Discerning the timing and pattern of late Quaternary glacier variability in the tropical Andes is important for our understanding of global climate change. Terrestrial cosmogenic nuclide (TCN) ages (48) on moraines and radiocarbon-dated clastic sediment records from a moraine-dammed lake at Nevado Huaguruncho, Peru, document the waxing and waning of alpine glaciers in the Eastern Cordillera during the past ~15 k.y. The integrated moraine and lake records indicate that ice advanced at 14.1 +/- 0.4 ka, during the first half of the Antarctic Cold Reversal, and began retreating by 13.7 +/- 0.4 ka. Ice retreated and paraglacial sedimentation declined until ca. 12 ka, when proxy indicators of glacigenic sediment increased sharply, heralding an ice advance that culminated in multiple moraine positions from 11.6 +/- 0.2 ka to 10.3 +/- 0.2 ka. Proxy indicators of glacigenic sediment input suggest oscillating ice extents from ca. 10 to 4 ka, and somewhat more extensive ice cover from 4 to 2 ka, followed by ice retreat. The lack of TCN ages from these intervals suggests that glaciers were less extensive than during the late Holocene. A final Holocene advance occurred during the Little Ice Age (LIA, ca. 0.4 to 0.2 ka) under colder and wetter conditions as documented in regional proxy archives. The pattern of glacier variability at Huaguruncho during the Late Glacial and Holocene is similar to the pattern of tropical Atlantic sea-surface temperatures, and provides evidence that prior to the LIA, ice extent in the eastern tropical Andes was decoupled from temperatures in the high-latitude North Atlantic. STUDY NOTES: Laguna Yanacocha, Peru elemental geochemistry measured by ITRAX and Innov-X handheld scanning X-Ray Fluorescence (XRF), plus sediment physical properties and geochemical data (dry bulk density, organic matter, clastic flux) for the past 13,000 years.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/yanacocha2015xrf-itrax.txt Data File; Laguna Yanacocha ITRAX XRF Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/yanacocha2015xrf-innov.txt Data File; Laguna Yanacocha Innov-X XRF Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/yanacocha2015sed.txt Data File; Laguna Yanacocha Sediment Geochemical Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11