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(Article of periodic en Anglais - 1997)

Document title

High bedrock incision rates in the Atenguillo River valley, Jalisco, western Mexico

Authors(s) and Affiliation(s)

RIGHTER K. (1) ;
(1) Dep. Geology and Geophysics, Univ. California, Berkeley, ETATS-UNIS

Abstract

Lava flows from 3 basaltic shield volcanoes preserve Pliocene-Pleistocene river levels in the Atenguillo River basin. K-Ar dates of these basalt flows, together with present and palaeoriver levels, allow calculation of bedrock incision rates at 3 points along the length of the Atenguillo River: Volcan La Laja, Volcan La Cienega, Volcan El Vigia. The high incision rates, as well as 2 distinct knickpoints along the profile of this river are related to a base level change at the northern end of the basin. The dynamics of this river basin are controlled by the ongoing process of continental fragmentation associated with the opening of the Gulf of California

Source

Article of periodic

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

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

Millesime : 1997, vol. 22, no4 [pp. 337-343]

Bibliographic references : 25 ref.

Collation : Illustration ;

Language

Anglais

Localisation

Bureau de recherches géologiques et minières - Orléans

INIST-CNRS, Cote INIST : 17355

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 1997.
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