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Le vore di Barbarano: note descrittive e speleogenesi

2003; University of Salento; Volume: 26; Linguagem: Inglês

10.1285/i15910725v26supp145

Leonardo Beccarisi, Gianni Cacciatore, Leonardo Chiriacò, Marco Delle Rose, Francesco Giuri, Vittorio Marras, Gianfranco Quarta, Fernando Resta, Paolo Solombrino,

Geological and Geophysical Studies Worldwide

It Le di sono due delle piu ampie cavita carsiche, a prevalente sviluppo verticale, del Salento. Esse risultano morfologicamente piu complesse di altre cavita analoghe, quali le di Spedicaturo e le Grotte della Poesia. Le osservazioni speleologiche, geomorfologiche, stratigrafiche, idrogeologiche e biologiche, permettono di individuare i meccanismi speleogenetici all'origine delle vore.Sono state cosi individuate le fasi evolutive dalla formazione delle protogrotte sino alle aperture degli accessi. En In the Salento peninsula several karst systems of mainly vertical cave are present. These caves are locally called and can be described like collapse dolines (with the depth usually higher than the base diameter) or solution chimney due to developments of drain system in closed depressions. The Vore di Barbarano (Vora Piccola and Vora Grande) are two of the biggest vertical caves of the Salento peninsula, about 35 and 25 m deep. Although they show some similarities with other dolines of the Salento, they are morphologically more complex, being formed by two superimposed chambers. The entries are sub-elliptical, irregular due to rockfalls and anthropic activity of quarry. The spelaelogical, geomorphological, stratigraphic, hydrogeological and biological observations carried out in the studied area may give us information about the spelaegenetic mechanism causing karst systems evolution. This survey suggests a evolutionary hypothesis which may be described through the following steps: identification of the basal karst level; formation of the early caves; evolution of the bottom chambers towards the tension dome shape; formation of the upper chambers caused by vault collapses of the lower chambers; evolution of the upper chambers; opening of the sinkholes.