Mise en évidence d'alternances saisonnières dans la structure interne des stalagmites. Intérêt pour la reconstitution des paléoenvironnements continentaux

摘要: Petrographic analysis of the internal structure several stalogmites shows alternation two types laminae having different crystalline fabrics. Changes in calcite precipitation conditions cause this alternation, which depends on seasonal variations. This hypothesis, resulting from petrographic observations, is confirmed by enumeration alternations modern and Holocene stalagmites known growth duration