IANIGLA   20881
INSTITUTO ARGENTINO DE NIVOLOGIA, GLACIOLOGIA Y CIENCIAS AMBIENTALES
Unidad Ejecutora - UE
artículos
Título:
Triassic age of the continental Pular Formation, Sierra de Almeida, Antofagasta, northern Chile
Autor/es:
NIEMEYER, H., ZAVATTIERI, A.M., BALLENT, S., ZAMUNER, A, GALLEGO, O.
Revista:
REVISTA GEOLóGICA DE CHILE
Editorial:
Servicio Nacional de Geología y Minería, Chile
Referencias:
Lugar: Santiago; Año: 2008 vol. 35 p. 147 - 147
ISSN:
0716-0208
Resumen:
ABSTRACT. In this contribution, we present a reassessment of the Pular Formation age (Sierra de Almeida, Antofagasta) that in previous papers was attributed to either the Late Paleozoic or Triassic. At Quebrada del Medio, the Pular formation includes a 379-meter-thick stratigraphic section formed from base to top by conglomerates, sandstones, black bituminous shales and limestones, tuffaceous sandstones and a poorly welded ignimbrite that accumulated in fl uvial and lacustrine environments. A multidisciplinary study of the fl ora and fauna was undertaken. The existence of diagnostic Gondwana microfl ora and macrofl ora allows attributing a Middle Triassic to early Late Triassic age to the Pular Formation. microfl ora and macrofl ora allows attributing a Middle Triassic to early Late Triassic age to the Pular Formation. environments. A multidisciplinary study of the fl ora and fauna was undertaken. The existence of diagnostic Gondwana microfl ora and macrofl ora allows attributing a Middle Triassic to early Late Triassic age to the Pular Formation. microfl ora and macrofl ora allows attributing a Middle Triassic to early Late Triassic age to the Pular Formation. that in previous papers was attributed to either the Late Paleozoic or Triassic. At Quebrada del Medio, the Pular formation includes a 379-meter-thick stratigraphic section formed from base to top by conglomerates, sandstones, black bituminous shales and limestones, tuffaceous sandstones and a poorly welded ignimbrite that accumulated in fl uvial and lacustrine environments. A multidisciplinary study of the fl ora and fauna was undertaken. The existence of diagnostic Gondwana microfl ora and macrofl ora allows attributing a Middle Triassic to early Late Triassic age to the Pular Formation. microfl ora and macrofl ora allows attributing a Middle Triassic to early Late Triassic age to the Pular Formation. environments. A multidisciplinary study of the fl ora and fauna was undertaken. The existence of diagnostic Gondwana microfl ora and macrofl ora allows attributing a Middle Triassic to early Late Triassic age to the Pular Formation. microfl ora and macrofl ora allows attributing a Middle Triassic to early Late Triassic age to the Pular Formation. In this contribution, we present a reassessment of the Pular Formation age (Sierra de Almeida, Antofagasta) that in previous papers was attributed to either the Late Paleozoic or Triassic. At Quebrada del Medio, the Pular formation includes a 379-meter-thick stratigraphic section formed from base to top by conglomerates, sandstones, black bituminous shales and limestones, tuffaceous sandstones and a poorly welded ignimbrite that accumulated in fl uvial and lacustrine environments. A multidisciplinary study of the fl ora and fauna was undertaken. The existence of diagnostic Gondwana microfl ora and macrofl ora allows attributing a Middle Triassic to early Late Triassic age to the Pular Formation. microfl ora and macrofl ora allows attributing a Middle Triassic to early Late Triassic age to the Pular Formation. environments. A multidisciplinary study of the fl ora and fauna was undertaken. The existence of diagnostic Gondwana microfl ora and macrofl ora allows attributing a Middle Triassic to early Late Triassic age to the Pular Formation. microfl ora and macrofl ora allows attributing a Middle Triassic to early Late Triassic age to the Pular Formation. fl uvial and lacustrine environments. A multidisciplinary study of the fl ora and fauna was undertaken. The existence of diagnostic Gondwana microfl ora and macrofl ora allows attributing a Middle Triassic to early Late Triassic age to the Pular Formation. microfl ora and macrofl ora allows attributing a Middle Triassic to early Late Triassic age to the Pular Formation. fl ora and fauna was undertaken. The existence of diagnostic Gondwana microfl ora and macrofl ora allows attributing a Middle Triassic to early Late Triassic age to the Pular Formation.fl ora and macrofl ora allows attributing a Middle Triassic to early Late Triassic age to the Pular Formation.