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(Article of periodic en Anglais - 2010)

Document title

Catastrophic rock avalanche 3600 years BP from El Capitan, Yosemite Valley, California

Authors(s) and Affiliation(s)

STOCK G.M. (1) ; UHRHAMMER R.A. (2) ;
(1) Yosemite National Park Service, Resources Management and Science, El Portal, ETATS-UNIS
(2) Berkeley Seismological Lab., Univ. of California, Berkeley, ETATS-UNIS

Abstract

The morphology and age of a rock avalanche deposit beneath El Capitan in Yosemite Valley indicates a massive prehistoric failure of a large expanse of the southeast face. The coincidence of ages, combined with the fact that the most recent (AD 1872) Owens Valley fault rupture triggered numerous large rock falls in Yosemite Valley, suggest that a large magnitude earthquake (≥M7.0) centered in the south-eastern Sierra Nevada may have triggered the rock avalanche. If correct, the extreme hazard posed by rock avalanches in Yosemite Valley remains present and depends on local earthquake recurrence intervals

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2010, vol. 35, no8 [pp. 941-951]

Bibliographic references : 65 ref.

Collation : 8 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1982

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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