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(Article of periodic en Anglais - 2013)

Document title

Formation of phreatic caves in an eogenetic karst aquifer by CO2 enrichment at lower water tables and subsequent flooding by sea level rise

Authors(s) and Affiliation(s)

GULLEY J.D. (1) ; MARTIN J.B. (2) ; MOORE P.J. (2) ; MURPHY J. (3) ;
(1) Dept. of Geological and Mining Engineering and Sciences, Houghton, ETATS-UNIS
(2) Dept. of Geological Sciences, Univ. of Florida, Gainesville, ETATS-UNIS
(3) Dept. of Natural Sciences, Santa Fe College, Gainesville, ETATS-UNIS

Abstract

Analyzing morphological data and water chemistry from caves in the Suwannee River Basin in north-central Florida and water chemistry from wells in the central Florida carbonate platform indicates that phreatic caves within the Suwannee River Basin most likely formed at lower water tables during lower sea levels. Consideration of the hydrological and geochemical constraints posed by the upper Floridan aquifer leads to the conclusion that cave formation was most likely driven by dissolution of vadose CO2 gas into the groundwater. Phreatic caves in the Suwannee River Basin are thus relict and have no causal relationship with modern surficial drainage systems. Dissolution at water tables, potentially driven by vadose CO2 gas, offers an underappreciated mechanism to form cavernous porosity in eogenetic carbonate rocks

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, no11 [pp. 1210-1224]

Bibliographic references : 2 p.

Collation : 12 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.3358

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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