Análisis sedimentológico y estratigráfico secuencial de las formaciones Vaca Muerta y Quintuco en el área de Chos Malal, Cuenca Neuquina
Kietzmann, Diego A. Ambrosio, Alfredo L. Suriano, Julieta Alonso, Susana Vennari, Verónica V. Aguirre-Urreta, María Beatriz Depine, Gabriela Repol, David
Análisis sedimentológico y estratigráfico secuencial de las formaciones Vaca Muerta y Quintuco en el área de Chos Malal, Cuenca Neuquina - 20 p.
Sedimentologic and sequence stratigraphic analysis of the Vaca Muerta and Quintuco Formations in Chos Malal area, Neuquén Basin The Vaca Muerta-Quintuco system (early Tithonian – early Valanginian) is a broad shallowingupward sedimentary cycle consisting of dark bituminous shales, marls, limestones, and sandstones, cropping out in the Neuquén Basin, west-central Argentina. This paper analyzes three sections in Chos Malal area, northern Neuquén province. Detailed facies analysis allows to differentiate six facies associations, representing basinal to middle ramp facies of a homoclinal carbonate ramp system (Vaca Muerta Formation), and basinal to shoreface facies of a mixed carbonate/siliciclastic shelf system (Quintuco Formation), prograding westward from the eastern margin of the basin. Two sequence hierarchies are recognized, including five composite depositional sequences and thirteen high-frequency sequences. These results are useful as analogs in nearby areas, since the shelf breaks mapped by Mitchum and Uliana ends perpendicular to the area of study.
CD I116 64 0015469
Análisis sedimentológico y estratigráfico secuencial de las formaciones Vaca Muerta y Quintuco en el área de Chos Malal, Cuenca Neuquina - 20 p.
Sedimentologic and sequence stratigraphic analysis of the Vaca Muerta and Quintuco Formations in Chos Malal area, Neuquén Basin The Vaca Muerta-Quintuco system (early Tithonian – early Valanginian) is a broad shallowingupward sedimentary cycle consisting of dark bituminous shales, marls, limestones, and sandstones, cropping out in the Neuquén Basin, west-central Argentina. This paper analyzes three sections in Chos Malal area, northern Neuquén province. Detailed facies analysis allows to differentiate six facies associations, representing basinal to middle ramp facies of a homoclinal carbonate ramp system (Vaca Muerta Formation), and basinal to shoreface facies of a mixed carbonate/siliciclastic shelf system (Quintuco Formation), prograding westward from the eastern margin of the basin. Two sequence hierarchies are recognized, including five composite depositional sequences and thirteen high-frequency sequences. These results are useful as analogs in nearby areas, since the shelf breaks mapped by Mitchum and Uliana ends perpendicular to the area of study.
CD I116 64 0015469
