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Rates of Deglaciation during the Last Glaciation and Holocene in the Cordillera Vilcanota-Quelccaya Ice Cap Region, Southeastern Perú

Published online by Cambridge University Press:  20 January 2017

Bryan G. Mark ,
Geoffrey O. Seltzer ,
Donald T. Rodbell  and
Adam Y. Goodman
Bryan G. Mark
Affiliation:
Syracuse University, Department of Earth Sciences, Syracuse, New York, 13244
Geoffrey O. Seltzer
Affiliation:
Syracuse University, Department of Earth Sciences, Syracuse, New York, 13244
Donald T. Rodbell
Affiliation:
Union College, Department of Geology, Schenectady, New York, 12308
Adam Y. Goodman
Affiliation:
Viridian Environmental, P.O. Box 25303, Houston, Texas, 77265
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Abstract

Moraine chronology is combined with digital topography to model deglacial rates of paleoglacier volumes in both the Huancané Valley on the west side of the Quelccaya Ice Cap and the Upismayo Valley on the northwest side of the Cordillera Vilcanota. The fastest rates of deglaciation (39×10−5 to 114×10−5 km3 yr−1 and 112×10−5 to 247×10−5 km3 yr−1 for each valley, respectively) were calculated for the most recent paleoglaciers, corresponding to the last few centuries. These results are consistent with observations in the Venezuelan Andes showing high rates of deglaciation since the Little Ice Age. These rates also fall within the range of 20th century rates of deglaciation measured on the Quelccaya Ice Cap (29×10−5 to 220×10−5 km3 yr−1, Brecher and Thompson, 1993; Thompson, 2000). These results imply that rates of deglaciation may fluctuate significantly over time and that high rates of deglaciation may not be exclusive to the late 20th century. Equilibrium line altitude (ELA) depressions for the ice volumes of the last glaciation modeled here were computed as 230 m for the Quelccaya Ice Cap and 170 m for the Cordillera Vilcanota. Maximum ELA depressions are lower than previously published: <500 m for the Cordillera Vilcanota and <400 m for the Quelccaya Ice Cap. These lower values could imply a topographic control over paleoglacier extent.

Keywords

deglaciationglacial geomorphologydigital elevation modelELA depressiontropical glaciersAndeslast glaciationHoloceneLittle Ice Age
Type
Research Article
Information
Quaternary Research , Volume 57 , Issue 3 , May 2012 , pp. 287 - 298
Copyright
University of Washington

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References

Ames, A A documentation of glacier tongue variations and lake developments in the Cordillera Blanca, Peru. Zeitschrift fur Gletscherkunde und Glazialgeologie 34, (1998). 1–36.Google Scholar
Baker, P.A, Rigsby, C.A, Seltzer, G.O, Fritz, S.C, Lowenstein, T.K, Bacher, N.P, and Veliz, C Wet conditions of the South American Altiplano during the last glacial maximum. Nature 409, (2001). 698–700.Google Scholar
Brecher, H, and Thompson, L.G Measurement of the retreat of Qori Kalis glacier in the tropical Andes of Perú by terrestrial photogrammetry. Photogrammetric Engineering & Remote Sensing 59, (1993). 1017–1022.Google Scholar
Chen, J, and Ohmura, A Estimation of alpine glacier water resources and their change since the 1870s. Hydrology in Mountainous Regions. (1990). p. 127–135.Google Scholar
Clapperton, C.M Quaternary glaciations in the Cordillera Blanca, Perú and the Cordillera Real, Bolivia. Revista CIAF (Bogota) 6, (1981). 93–111.Google Scholar
Dornbusch, U Current Large-Scale Climatic Conditions in South Perú and Their Influence on Snowline Altitudes. (1998). Freie Universität, Berlin.Google Scholar
Goodman, A.Y, Rodbell, D.T, Seltzer, G.O, and Mark, B.G Subdivision of glacial deposits in south-eastern Perú based on pedogenic development and radiometric ages. Quaternary Research 56, (2001). 31–50.Google Scholar
Hastenrath, S, and Kutzbach, J Late Pleistocene climate and water budget of the South American Altiplano. Quaternary Research 24, (1985). 249–256.Google Scholar
Hidrandina, S.A Glacier Inventory of Perú. (1988). Consejo Nacional de Ciencia y Technologı́a, Perú.Google Scholar
Kaser, G, and Georges, C Changes in the equilibrium-line altitude in the tropical Cordillera Blanca, Perú, 1930–50, and their spatial variations. Annals of Glaciology 24, (1997). 344–349.CrossRefGoogle Scholar
Klein, A.G, Seltzer, G.O, and Isacks, B.L Modern and Last Local Glacial Maximum snowlines in the Central Andes of Perú, Bolivia, and Northern Chile. Quaternary Research Reviews 18, (1999). 3–84.Google Scholar
Meierding, T.C Late Pleistocene glacial equilibrium-line altitudes in the Colorado Front Range: A comparison of methods. Quaternary Research 18, (1982). 289–310.CrossRefGoogle Scholar
Mercer, J.H Cenozoic glaciation in the southern hemisphere. Annual Reviews in Earth and Planetary Science 11, (1983). 99–132.Google Scholar
Mercer, J. H. (1984). Late Cainozoic paleoclimates of the southern Hemisphere south of the equator.. In Late Cenozoic Paleoclimates of the Southern Hemisphere, Vogel, J. C., Ed., pp. 45–58. Balkema, Rotterdam.Google Scholar
Mercer, J.H, and Palacios, O.M Radiocarbon dating of the last glaciation in Perú. Geology 5, (1977). 600–604.Google Scholar
Petersen, U, Sassarini, L, and Plenge, R Glaciar Yanasinga (Central Perú): 24 years of measurements. Journal of Glaciology 8, (1969). 487–489.Google Scholar
Ribstein, P, Tirian, E, Francou, B, and Savaria, R Tropical climate and glacier hydrology: A case study in Bolivia. Journal of Hydrology 165, (1995). 221–234.CrossRefGoogle Scholar
Rodbell, D.T Late Pleistocene equilibrium-line reconstructions in the northern Peruvian Andes. Boreas 21, (1992). 43–52.Google Scholar
Rodbell, D.T, and Seltzer, G.O Rapid ice margin fluctuations during the Younger Dryas in the Tropical Andes. Quaternary Research 54, (2000). 328–338.CrossRefGoogle Scholar
Rull, V Palaeoecology of pleniglacial sediments from the Venezuelan Andes; Palynological record of El Caballo Stadial, sedimentation rates, and glacial retreat. Review of Paleobotany and Palynology 99, (1998). 95–114.CrossRefGoogle Scholar
Seltzer, G.O Recent glacial history and paleoclimate of the Perúvian-Bolivian Andes. Quaternary Science Reviews 9, (1990). 137–152.Google Scholar
Seltzer, G.O Late Quaternary glaciation of the Cordillera Real, Bolivia. Journal of Quaternary Science 7, (1992). 87–98.CrossRefGoogle Scholar
Seltzer, G.O, Rodbell, D, and Burns, S Isotopic evidence for late Quaternary climatic change in tropical South America. Geology 28, (2000). 35–38.Google Scholar
Stuiver, M, and Reimer, P.J Extended 14-C data base and revised CALIB 3.0 14-C age calibration program. Radiocarbon 35, (1993). 215–230.Google Scholar
Stuiver, M, Reimer, P.J, Bard, E, Beck, J.W, Burr, G.S, Hughen, K.A, Kromer, B, McCormac, G, Van der Plicht, J, and Spurk, M INTCAL98 radiocarbon age calibration, 24,000-0 cal B.P. Radiocarbon 40, (1998). 1041–1083.CrossRefGoogle Scholar
Thompson, L.G Glaciology of the Perúvian Quelccaya ice cap. Boletin de la Sociedad Geologica del Perú 63, (1979). 149–158.Google Scholar
Thompson, L.G Ice core evidence for climate change in the Tropics: Implications for our future. Quaternary Science Reviews 19, (2000). 19–35.Google Scholar
Thompson, L.G, Mosley-Thompson, E, Bolzan, J.F, and Koci, B.R A 1500-yr record of tropical precipitation in ice cores from the Quelccaya Ice Cap, Perú. Science 226, (1985). 50–53.Google Scholar
Thompson, L.G, Mosley-Thompson, E, Dansgaard, W, and Grootes, P.M The Little Ice Age as recorded in the stratigraphy of the tropical Quelccaya Ice Cap. Science 234, (1986). 361–364.Google Scholar
Thompson, L.G, Mosley-Thompson, E, and Henderson, K.A Ice-core paleoclimate records in tropical South America since the Last Glacial Maximum. Journal of Quaternary Science 15, (2000). 377–394.Google Scholar
Mapping Systems General Reference. (1995). Trimble Navigation Limited, Sunnyvale.Google Scholar
Wirrmann, D, and Mourguiart, P Late Quaternary Spatio-temporal limnological variations in the Altiplano of Bolivia and Perú. Quaternary Research 43, (1995). 344–354.Google Scholar
Wright, H.E Jr. Coring tips. Journal of Paleolimnology 6, (1991). 37–49.Google Scholar