IGB

Connexion

(Article of periodic en Anglais - 2013)

Document title

Origin of double-tower raft cones in hypogenic caves

Authors(s) and Affiliation(s)

GÁSQUEZ F. (1) ; CALAFORRA J.-M. (1) ;
(1) Water Resources and Environmental Research Group - Dept. of Hydrogeology and Analytical Chemistry, Univ. of Almería, La Cañada de San Urbano, ESPAGNE

Abstract

The AA. describe a variety of raft cones that were discovered in the Paradise Chamber of the Sima de la Higuera Cave (Murcia, south-eastern Spain) based on their morphological and morphometric characteristics. These speleothems, dubbed "double-tower cones", have a notch in the middle and look like 2 cones, one superimposed over the other. The genetic mechanism that gave rise to the double-tower cones must include an intermediate stage of rapid calcite raft precipitation, caused by a drop in the water table and by changes in cave ventilation leading to greater carbon dioxide (CO2) degassing and evaporation over the surface of the thermal lake where these speleothems formed. Calcite rafts were deposited in Paradise Chamber, completely covering many of the cones. Later, conditions for slower calcite raft precipitation were restored and some of the cones continued to grow at the same points

Source

Article of periodic

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

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

Millesime : 2013, vol. 38, no14 [pp. 1655-1661]

Bibliographic references : 23 ref.

Collation : 5 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3399

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
Refdoc record number (ud4) : 28424331 : Permanent link - XML version
Powered by Pxxo