La Formación Paraná (Mioceno medio): estratigrafía, distribución regional y unidades equivalentes

• Autores: Florencio Gilberto Aceñolaza
• Localización: Serie correlación geológica, ISSN-e 1666-9479, ISSN 1514-4186, Vol. 14, Nº. 1, 2000
• Idioma: español
• Títulos paralelos:
  • The Paraná Formation (Middle Miocene): stratigraphy and regional distribution
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• Dialnet Métricas: 8 Citas
• Resumen

  • A regional-stratigraphical analysis for the Paraná Formation (Middle Miocene) is presented. This is based on historical data in the type localitiy and some other new sections done on several localities of Argentina. The Paraná Formation was deposited during an important transgression over the pampean and patagonian regions, close to the end of the Lower to Middle Miocene. The transgression covered most of central to eastern Argentina, reaching as far as the Andean and Patagonian border. Lime-stones, sandy to argillaceous facies with abundant fossils (molluscs, echinoids, trace fossils, foraminifera, conchostraca, fish and others marine vertebrates etc.) were developed, along the Uruguayan border to the westwards Entre Rios province, in Argentina. In several localities (El Cerro and Paraná city, Molino Doll, etc) the limestone levels do have reef barrier type structure. Some others do present sandy barriers (Cristamine quarry). The fauna and sedimentological characters have been interpreted to be representative of temperate to warm waters and show correlation with outocrops in Patagonia .