... in unconnected sections, separate for fault zones, from the Río Salado and Río Yalbantuc. Both rivers are located in the vicinity of the town of Totolapa, approximately 20 km south of the town of San Cristobal de Las Casas and 66 km south of the town of Simojovel ( Fig. 1 ). Head with concave margin...

... to the exotic mineralogy of the volcanic ejecta from Latium, building on several published descriptions of these ejecta ( e.g ., Della Ventura et al . 1996 , 1999a , 1999b , Bellatreccia et al . 2002 ; for pyrochlore-group minerals, in particular, see De Casa et al . 1986 ). The pyrochlore...