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Pleistocene Glaciation in the Southern Lake District of Chile

  • Stephen C. Porter (a1)

Relative-age criteria permit deposits of successive Andean glacier advances in the southern Lake District of Chile to be divided into four mappable drift sheets, the oldest two of which overlie Tertiary bedrock along the eastern flank of the Cordillera de la Costa. Only the youngest drift (Llanquihue) is datable by radiocarbon. During the most extensive ice advance of the last glaciation the Lago Llanquihue glacier was about 95 km long and reached an estimated maximum thickness of between 1000 and 1300 m. Glacier equilibrium lines at that time lay about 1000 m below their present level and rose eastward with a gradient of about 5 m/km. Successive ice advances in the Lago Llanquihue basin, which resulted in construction of end moraines and associated outwash plains beyond the lake margin, culminated sometime before about 20,000 yr ago and between 20,000 and 19,000 yr ago. A later readvance, inferred from the sedimentary record of lake-level fluctuations in the basin, had begun by about 15,000 yr ago and culminated shortly after 13,000 yr ago. A comparable, but less-closely dated, record of ice advances is found northwest of Seno Reloncaví and on Isla Chiloé. Deglaciation following the latest advance is likely to have been rapid, for the major glacier lobes fronted on deep water bodies that would have promoted extensive calving.

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R.M. Burke , P.W. Birkeland 1979. Reevaluation of multiparameter relative dating techniques and their application to the glacial sequence along the eastern escarpment of the Sierra Nevada, California. Quaternary Research 11. 2151.

R.F. Flint , F. Fidalgo 1964. Glacial geology of the east flank of the Argentine Andes between latitude 39°10′ S and latitude 41°20′ S. Geological Society of America, Bulletin 75. 335352.

R.F. Flint , F. Fidalgo 1969. Glacial drift in the eastern Argentine Andes between latitude 41°10′ S and latitude 43°10′ S. Geological Society of America, Bulletin 80. 10431052.

C.J. Heusser 1960. Late Pleistocene environments of the Laguna de San Rafael area, Chile. Geographical Review 50. 555577.

C.J. Heusser 1972a. On the occurrence of Lycopodium fuegianum during late Pleistocene interstades in the Province of Osorno, Chile. Torrey Botanical Club Bulletin 99. 178184.

C.J. Heusser 1981. Palynology of the last interglacial-glacial cycle in midlatitudes of southern Chile. Quaternary Research 16. 293321.

C.J. Heusser , R.F. Flint 1977. Quaternary glaciations and environments of northern Isla Chiloé, Chile. Geology 5. 305308.

C.J. Heusser , S.S. Streeter 1980. A temperature and precipitation record of the past 16,000 years in southern Chile. Science 210. 13451347.

P.C. Ives , B. Levin , R.D. Robinson , M. Rubin 1964. U.S. Geological Survey radiocarbon dates VIII. Radiocarbon 6. 3776.

H. Kobayashi , T. Hirose , M. Sugino , N. Watanabe 1974. University of Tokyo radiocarbon measurements V. Radiocarbon 16. 381387.

C. Lorius , L. Merlivat , J. Jouzel , M. Pourchet 1979. A 30,000-yr isotope climatic record from Antarctic ice. Nature (London) 280. 644648.

J.H. Mercer 1972. Chilean glacial chronology 20,000 to 11,000 Carbon-14 years ago: Some global comparisons. Science 176. 11181120. Q. Robin 1977. Ice cores and climatic change. Philosophical Transactions of the Royal Society of London, Series B 280. 143168.

S.M. Totten 1969. Overridden recessional moraines of north-central Ohio. Geological Society of America, Bulletin 80. 19311946.

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Quaternary Research
  • ISSN: 0033-5894
  • EISSN: 1096-0287
  • URL: /core/journals/quaternary-research
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