Late-Glacial history of lago Argentino, Argentina, and age of the Puerto Bandera moraines

Auteurs :
STRELIN, J.A.
MALAGNINO, E.C.

Description :
Detailed geomorphologic studies in the western area of Lago Argentino, including stratigraphic profiles at Bahía del Quemado in the northern branch (Brazo Norte), indicate that the Puerto Bandera moraines were deposited by 3 pulses of ice. The timing of the 3 glacier advances was established by radiocarbon dating. After the third substade, the ice tongues retreated into the interior branches of Lago Argentino and have remained there since. Evidence found at Bahía del Quemado, together with data provided by other AA., attests to a significant climatic change by the middle Holocene, which is believed occurred during the Herminita advance.


Type de document :
Article de périodique

Source :
Quaternary research, issn : 0033-5894, 2000, vol. 54, n°. 3, p. 339-347, Collation : Illustration, Références bibliographiques : 33 ref.

Date :
2000

Editeur :
Pays édition : Etats-Unis, San Diego, CA, Elsevier