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(Article of periodic en Anglais - 1999)

Document title

The Alemania rockfall dam : a record of a mid-holocene earthquake and catastrophic flood in northwestern Argentina

Authors(s) and Affiliation(s)

WAYNE W.J. ;

Abstract

A prehistoric rockfall, probably caused by an earthquake, blocked Río de las Conchas 2 km upstream from Alemanía (Salta Province, Argentina) in the southern part of the Cordillera Oriental. The rockfall created a dam that formed a lake at least 16 km long. Shells of Biomphalaria, preserved in the lake sediments and, dated by radiocarbon, established the time of this event to be about 5500-6000 years ago. When the natural dam failed, probably either by piping or overtopping, the lake drained catastrophically, eroding a trench through the chaotic mass of sandstone rubble

Source

Article of periodic

published at : Geomorphology / ISSN 0169-555X

Editor : Elsevier, Amsterdam - PAYS-BAS (1987)

Millesime : 1999, vol. 27, no3-4 [pp. 295-306]

Bibliographic references : 27 ref.

Collation : Illustration ;

Language

Anglais

INIST-CNRS, Cote INIST : 21151

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 1999.
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