Hallazgo de sedimentitas sinorogénicas neógenas en los alrededores de Chos Malal, Cuenca Neuquina, Argentina

• Autores: Martín Cervera, Héctor Leanza
• Localización: Revista del Museo Argentino de Ciencias Naturales, ISSN-e 1853-0400, ISSN 1514-5158, Vol. 11, Nº. 1, 2009, págs. 15-22
• Idioma: español
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• Resumen

  • Finding of Neogene synorogenic sedimentites around Chos Malal, Neuquén Basin, Argentina.The Chos Malal Formation nov. is proposed to group a 140,50 m thick neogene succession of epiclasticsedimentites including sandstones, silstones and mudstones with tuffaceous input, which were previously ascribedto the Early Cretaceous Rayoso Formation. They were accumulated during the formation of a syncline elongatedin a NNW-SSE direction, being deposited in angular unconformity on the Rincon Member of the Rayoso Formation,and covered in the same way by the Middle Miocene-Early Pliocene Rincón Bayo Formation. According to itsstratigraphic position and correlations with near geographically situated units, they are ascribed to the MiddleMiocene.