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Pleistocene Glaciation in the Atacama Desert, Northern Chile

  • S. E. Hollingworth (a1) and J. E. Guest (a1)
Abstract

Morainic deposits associated with boulder spreads and outwash sands in the High Andes of the Atacama Desert are described and provide evidence of a Pleistocene glaciation. Widespread, locally folded gravel sheets of a similar age may provide a datum for correlating movements resulting in the uplift of the Andes.

Résumé

Des dépôts morainiques associés à des roches dispersées et des sables fluviatiles dans les Hautes Andes du désert d’Atacama sont décrits et témoignent en faveur d’une glaciation pléistocène. Des couches de gravier, très étendues et localement plissées, d’un âge similaire peuvent donner une date pour des mouvements corrélatifs résultant d’une montée des Andes.

Zusammenfassung

Es werden Moränenablagerungen im Verein mit Blockfeldern und Sandauswaschungen in den Hochanden der Atacama-Wüste beschrieben, die eine pleistozäne Vergletscherung beweisen. Weitverbreitete, lokal gefaltete Schotterdecken ähnlichen Alters mögen einen Schlüssel für die Korrelation von Bewegungsvorgängen bei der Anden-Hebung liefern.

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Copyright
References
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Brüggen, J. 1950. Fundamentos de la geología de Chile. Santiago de Chile, Instituto Geográfico Militar.
Hollingworth, S. E. 1964. Dating the uplift of the Andes of northern Chile. Nature, Vol. 201, No. 4914, p. 1720.
Lliboutry, L., and others. 1958. Les glaciers du desert chilien, [par] I.. Lliboutry, O. Gonzalez et J. Simken. Union Géodésique et Géophysique Internationale. Association Internationale d’Hydrologie Scientifique. Assemblée générale de Toronto, 3–14. sept. 1957. Tom. 4, p. 291300.
Rutland, R. W. R., and others. 1965. Isotopic ages and Andean uplift, by R. W. R. Rutland, J. E. Guest and R. L. Grasty. Nature, Vol. 208, No. 5011. p. 69778.
Tricart, J. 1965. Observations on the Quaternary firn line in Peru. Journal of Glaciology, Vol. 5, No. 42, p. 85763.
Wilson, J. Garcia, W. 1962. Geología de Ion Quadrangulos de Pachia y Palca. Peru. Comisión Carta Geologtca Nacional, Vol. 2, No. 4.
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Journal of Glaciology
  • ISSN: 0022-1430
  • EISSN: 1727-5652
  • URL: /core/journals/journal-of-glaciology
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