Evidence of paleoseismicity in a flowstone of the Observatoire cave (Monaco)

Eric Gilli (1)

1 ESPACE - Études des Structures, des Processus d’Adaptation et des Changements de l’Espace

Monaco is a medium seismicity zone. The Cave of Observatoire, a well decorated show cave, is a good place for paleoseismicity studies. On the floor of the cave it is possible to observe a great number of collapsed sodastraws. The breakages are attributed to the 1887 ligurian earthquake. A bore hole in a flowstone shows several levels of collapses that may indicate ancient earthquakes.

Mots clés: karst; cave; earthquake; speleothems; tectonics

Domaines: Sciences de la Terre

Eric Gilli. Evidence of paleoseismicity in a flowstone of the Observatoire cave (Monaco). Geodinamica Acta, 1999, 12 (3-4), pp.159-16. ⟨hal-00748013⟩