http://www.cnr.it/ontology/cnr/individuo/prodotto/ID292617

The role of condensation in the evolution of dissolutional forms in gypsum caves: Study case in the karst of Sorbas (SE Spain) (Articolo in rivista)

Type

Prodotto della ricerca (Classe)
Articolo in rivista (Classe)

Label

The role of condensation in the evolution of dissolutional forms in gypsum caves: Study case in the karst of Sorbas (SE Spain) (Articolo in rivista) (literal)

Anno

2014-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1016/j.geomorph.2014.07.006 (literal)

Alternative label

Fernando Gázquez, José-María Calaforra, Paolo Forti, Jo DeWaele, Laura Sanna (2014)
The role of condensation in the evolution of dissolutional forms in gypsum caves: Study case in the karst of Sorbas (SE Spain)
in Geomorphology (Amst.); Elsevier B.V., Amsterdam (Belgio)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Fernando Gázquez, José-María Calaforra, Paolo Forti, Jo DeWaele, Laura Sanna (literal)

Pagina inizio

100 (literal)

Pagina fine

111 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://www.scopus.com/inward/record.url?eid=2-s2.0-84904525560&partnerID=q2rCbXpz (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

229 (literal)

Rivista

Geomorphology (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

12 (literal)

Note

Scopu (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

Department of Earth Sciences, Cambridge University, United Kingdom; Water Resources and Environmental Geology Research Group, Dept. of Hydrogeology and Analytical Chemistry, University of Almería, Spain; Italian Institute of Speleology, Department of Biological, Geological and Environmental Sciences, University of Bologna, Italy; Institute of Biometeorology, National Research Council - CNR-IBIMET, Sassari, Italy (literal)

Titolo

The role of condensation in the evolution of dissolutional forms in gypsum caves: Study case in the karst of Sorbas (SE Spain) (literal)

Abstract

This work reports the results of geomorphological observations carried out in the coastal Fico Cave and surrounding areas (Baunei, Central East Sardinia) in the Gulf of Orosei. The research has been performed both inside and outside the cave. A tidal notch, generally believed to be of Tyrrhenian age, is barely visible at 8.5 m above present sea level (apsl), some metres below the main entrance of the cave. Old cave passages, now partially opened by cliff retreat and parallel to the coastline, are clearly visible at around 14 m apsl and correspond to the main level of Fico Cave. They are covered with cryoclastic éboulis ordonnées deposits that probably shielded most of this coastal strip from littoral erosion. Two more tidal notches are located higher, at 22 and 50 m apsl. Fico Cave itself is composed of at least 6 well distinguished more or less horizontal levels at around 10 m below present sea level (bpsl), and 14, 22, 40, 50, and 63 m apsl, respectively. Apart from the lowest level, all passages develop along main fractures more or less parallel to the coastline and never extend landward for more than 150 metres. They are mostly carved in a relatively porous coarse-grained bioclastic limestone (Mt. Bardia Formation) and all end blindly, diminishing their dimensions progressively landward. All passages only contain clay deposits, lacking fluvial or marine sediments or typical fluvial erosion morphologies (i.e. scallops). Only one small conduit directly open to the sea between 2 and 8 m apsl hosts a sequence of beach sediments containing fossils compatible with a Tyrrhenian age. The -10 m branch is an active cave passage with a small stream transporting granitic sands and limestone pebbles toward the sea, showing widespread occurrence of scallops. All evidences suggest Fico Cave to be formed in the coastal mixing zone along major discontinuities during several Quaternary interglacial periods, when sea level was high and relatively stable for enough time to develop large dissolutional voids. Mean uplift rates and the position of the levels allows to estimate the formation of this cave to have occurred between 1 Ma and 325 ka. The small active branch instead has formed much later, probably during MIS 7 (225 ka), and seems to be a casual interception of this old flank margin cave. (literal)

Editore