Taphonomy and mineralization of carbonated wood from the Purbeckian facies l'Usine, Cherves-Richemont (Charente). Lower Cretaceous deposits Charentes region, in southwestern France, correspond to continental brackish environments, locally rich evaporitic formations (Manès 1850; Pouech et al. 2006, 2014, 2015; Schnyder 2012; Vullo 2014; Moreau 2017b). Three fossiliferous localities have been pre...