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(Article of periodic en Anglais - 2011)

Document title

The role of aridification in constraining the elevation range of Holocene solifluction processes and associated landforms in the periglacial belt of the Sierra Nevada (southern Spain)

Authors(s) and Affiliation(s)

OLIVA M. (1 2) ; SCHULTE L. (4) ; GÓMEZ ORTIZ A. (2 3) ;
(1) Inst. of Geography and Territorial Planning, Univ., Lisbon, PORTUGAL
(2) Landscape Research and Mediterranean Mountain Palaeoenvironments Research Group, Univ., Barcelona, ESPAGNE
(3) Dep. for Physical and Regional Geography and Landscape Research Lab., Univ., Barcelona, ESPAGNE
(4) Fluvalps Research Group, Dep. for Physical and Regional Geography, Univ., Barcelona, ESPAGNE

Abstract

The AA. studied 2 types of sedimentary records that reveal a synchronous timing for slope instability in this high semi-arid massif; solifluction landforms and mountain lake sediments. Lithological and sedimentological properties of both records have recorded numerous cycles of different magnitude of slope processes. Although present-day climate conditions do not promote active solifluction processes in the Sierra Nevada, colder and wetter periods during the Holocene triggered solifluction and transported coarse-grained sediments into the lakes. By contrast, warm phases favoured soil formation and vegetation cover diminishing the grain size of the particles reaching the lakes. Lake sediments record an aridification trend in the massif intensifying since 4.2 ka BP that has conditioned solifluction activity to shift gradually to higher elevations

Source

Article of periodic

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

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

Millesime : 2011, vol. 36, no10 [pp. 1279-1291]

Bibliographic references : 46 ref.

Collation : 9 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2116

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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