Peruvian Andes Proglacial Lakes Holocene Sediment Data Stansell, N.D.; Rodbell, D.; Abbott, M.B.; Mark, B.G. Stansell, N.D. Rodbell, D. Abbott, M.B. Mark, B.G. earth science/paleoclimate/paleolimnology (density,wet sediment,null,gram per cubic centimeter,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (mineral matter,sediment,null,gram per square centimeter per year,null,paleolimnology,null,null,N,total dry sediment bulk density minus organic matter and biogenic silica) earth science/paleoclimate/paleolimnology (iron,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (strontium,sediment,null,percent,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 (mineral matter,sediment,null,standard deviation unit,null,paleolimnology,null,null,N,flux z-scores) earth science/paleoclimate/paleolimnology (calcium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (zirconium,sediment,null,parts per million,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (potassium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (titanium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (volume magnetic susceptibility,sediment,null,dimensionless (SI system),null,paleolimnology,null,null,N,x10-6 units) earth science/paleoclimate/paleolimnology (age,null,null,calendar year before present,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (calcium,sediment,null,percent,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology earth science/paleoclimate/paleolimnology earth science/paleoclimate/paleolimnology earth science/paleoclimate/paleolimnology (Laguna Lutacocha>LATITUDE -10.55>LONGITUDE -76.7167) (Laguna Jahuacocha>LATITUDE -10.2333>LONGITUDE -76.9333) (Laguna Queshquecocha>LATITUDE -9.8>LONGITUDE -77.3) Sediment records from proglacial lakes between 9 and 10S in the western Cordillera of the Peruvian Andes document the waxing and waning of alpine glaciers since the end of the Lateglacial stage. These records from the southern tropical Andes provide supporting evidence that the early Holocene (between 12 and 8 ka) was relatively warm and dry, and the middle Holocene (between 8 and 4 ka) was marked by a shift to cooler, and possibly wetter conditions in certain regions, leading to glacial advances. Although there were multiple periods of brief ice advances that interrupted the overall trend, glaciers in multiple valleys generally retreated from ~4.0 ka through the Medieval Climate Anomaly (1.0-0.7 ka). This late Holocene pattern of ice retreat occurred during a period when lake level studies, and both lacustrine and speleothem stable isotopic records indicate wetter conditions relative to the middle Holocene, suggesting that higher temperatures contributed to the pattern of ice retreat. Following this period of glacial retreat, multiple proxy records suggest that the start of the Little Ice Age (~0.6-0.1 ka) was a colder and wetter time throughout much of the tropical Andes. There appear to be two primary synoptic-scale climatic controls on temperature and precipitation linked to insolation dynamics that drive changes in ice cover in the southern tropical Andes during the Holocene: 1) the strength of the South America Summer Monsoon, which is linked to Northern Hemisphere temperatures and the mean position of the Intertropical Convergence Zone over the Atlantic, and 2) sea surface temperature distributions in the tropical Pacific Ocean and its influence on atmospheric temperature, precipitation and circulation patterns. STUDY NOTES: Geochemical and Physical Properties data from 3 lakes in the Peruvian Andes NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Stansell, N.D. Investigator : Rodbell, D. Investigator : Abbott, M.B. Investigator : Mark, B.G. 2013-04-09 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/14202 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/jahuacocha2013phys.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/lutacocha2013clastic.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2013chem.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2013dens.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/lutacocha2013dens.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/jahuacocha2013chem.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/lutacocha2013chem.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2013clastic.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2013ms.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/lutacocha2013ms.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/jahuacocha2013phys.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/lutacocha2013clastic.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2013chem.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2013dens.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/lutacocha2013dens.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/jahuacocha2013chem.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/lutacocha2013chem.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2013clastic.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2013ms.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/lutacocha2013ms.txt English https://www.ncdc.noaa.gov/paleo/study/14202 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/jahuacocha2013phys.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/lutacocha2013clastic.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2013chem.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2013dens.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/lutacocha2013dens.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/jahuacocha2013chem.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/lutacocha2013chem.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2013clastic.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/queshquecocha2013ms.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/peru/lutacocha2013ms.txt Nathan D. Stansell, Donald T. Rodbell, Mark B. Abbott, and Bryan G. Mark. 2013. Proglacial lake sediment records of Holocene climate change in the western Cordillera of Peru. Quaternary Science Reviews, Vol. 70, 15 June 2013. DOI: 10.1016/j.quascirev.2013.03.003 START YEAR: 13031 cal yr BP * END YEAR: -60 cal yr BP -77.3 -10.55 -76.7167 -9.8