Geología preliminar de la secuencia volcanosedimentaria y serpentinitas asociadas del Júrasico (?) del área de Cuicatlán-Concepción Pápalo, Oaxaca

Abstract

The area comprised between Cuicatlán and Concepción Pápalo, Oaxaca, belongs to the Tehuantepec-Tehuacán or Cuicateco paleobasin. It is constituted by unmetamorphosed sedimentary rocks of Cenozoic age and Mesozoic rocks which include metamorphosed volcanic flows, metapyroclastics andinterbedded metasediments. A large block of serpentinites is tectonically emplaced into the Mesozoic sequence which is defined by flow planes.

Related to the Late Cretaceous compressive tectonics, the whole area experimented a general deformation, where the resulting structures verge eastward. The region lies on the western limb of a broad anticline, the former having an attitude of N10°E/34°W. Download full text.