Grotte pétrifiante de Trôo
39 rue Auguste-Arnault, 41800 Trôo
- Loir-et-Cher
- Centre-Val de Loire
It is the most old(former) tourist site of the village of Trôo. Already opened to the public at the beginning of the XXth century, this small young, devoted to the long work of hard water, is interesting at tourist level, of course, but also from the point of view geological. It is possible to discover stalactites to it, the vestiges of the old(former) chapel Saint Gabriel, his petrified basin and all splendid work of the water on the tufa (local calcareous rock) in 300 years. The cave possesses water resources not insignificant; this water, resulting(coming) from diverse sources(springs) precise origins of which they do not know that and who(which) passes of the centre of the Mound which is extremely loaded in limestone. The valley of the Loir(Dormouse) was, 90 million years ago, a huge inland sea, where from the cavities which were dug(accentuated) throughout its bed. Why petrifying? The water, in charge of carbon dioxide, dissolves the limestone of the rocks which(where) it crosses and, by arriving at the contact of air, more warmly, of cavities, it puts down(deposits) the transported calcite. This one piles up in stalactites in the places where the water gets loose from the ceiling or in stalagmites in the places where drops of water fall on the ground.
Etiquetas
Musée, salle d'exposition
Jean-Luc ECLERCY-DETERPIGNY
