In this paper is described the field trip which brought almost 50 participants of the WRI-10 to visit the Sulcis region in south-west Sardinia. This excursion led across a great range of geomorphological landscapes and a wide lapse of geological time. The first stop concerned the Riomurtas karst depression near Narcao, with interesting sinkhole collapse phenomena related to withdrawal of the water table by overexploitation of the karstic aquifer. Near Nuxis, a small carbonatic outcrop with interesting karstic microforms was the object of the second stop, whereas the third stop was at the Is Zuddas cave close to Santadi. The visit of this cave permitted the participants not only to admire striking aragonitic helictites, beautiful calcite concretions and various typical cave deposits, but also to see the results of a geo-environmental monitoring of this cave and its fragile environment.
Some examples of karst phenomena in the Sulcis region
FRAU, FRANCO
2001-01-01
Abstract
In this paper is described the field trip which brought almost 50 participants of the WRI-10 to visit the Sulcis region in south-west Sardinia. This excursion led across a great range of geomorphological landscapes and a wide lapse of geological time. The first stop concerned the Riomurtas karst depression near Narcao, with interesting sinkhole collapse phenomena related to withdrawal of the water table by overexploitation of the karstic aquifer. Near Nuxis, a small carbonatic outcrop with interesting karstic microforms was the object of the second stop, whereas the third stop was at the Is Zuddas cave close to Santadi. The visit of this cave permitted the participants not only to admire striking aragonitic helictites, beautiful calcite concretions and various typical cave deposits, but also to see the results of a geo-environmental monitoring of this cave and its fragile environment.
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