El jurásico del dorso de los Chihuidos, contribución a su conocimiento
Micucci, Eduardo Bande, Alejandro Starck, Daniel Veiga, Ricardo
El jurásico del dorso de los Chihuidos, contribución a su conocimiento - 2018 - 23 p. ; 437-460
The Chihuidos High is a regional NE-SW-oriented structure located in the central sector of the Neuquén Basin. Although its topographic relief is not impressive (around 600 m), covers a wide area of more than 2400 km2 with a major axis longer than 80 km. Traditionally was interpreted as an inverted half-graben during the Cretaceous and Cenozoic. The recent acquisition of new seismic data and its detailed analysis integrated with the previous information, allows us to visualize a more richer and complex history. Part of the structure was a "paleohigh" in early and middle Jurassic times, controlling deposition of Precuyo and Cuyo Groups. The orientation of the early-middle Jurassic paleohigh was similar to the recent Chihuidos High and was probably a transpressional regional structure. Lateral thickness variation of the Auquilco Formation would be controlled by its depositional environment with no tectonic control. Tordillo Formation thickness change laterally controlled by paleotopography. The Vaca Muerta - Quintuco system thickness is reduced towards the Chihuidos High, suggesting tectonic activity or the presence of a paleohigh during the late Jurassic - early Cretaceous
Cuenca Neuquina
068.82 553.28 C62 2018 0015658
El jurásico del dorso de los Chihuidos, contribución a su conocimiento - 2018 - 23 p. ; 437-460
The Chihuidos High is a regional NE-SW-oriented structure located in the central sector of the Neuquén Basin. Although its topographic relief is not impressive (around 600 m), covers a wide area of more than 2400 km2 with a major axis longer than 80 km. Traditionally was interpreted as an inverted half-graben during the Cretaceous and Cenozoic. The recent acquisition of new seismic data and its detailed analysis integrated with the previous information, allows us to visualize a more richer and complex history. Part of the structure was a "paleohigh" in early and middle Jurassic times, controlling deposition of Precuyo and Cuyo Groups. The orientation of the early-middle Jurassic paleohigh was similar to the recent Chihuidos High and was probably a transpressional regional structure. Lateral thickness variation of the Auquilco Formation would be controlled by its depositional environment with no tectonic control. Tordillo Formation thickness change laterally controlled by paleotopography. The Vaca Muerta - Quintuco system thickness is reduced towards the Chihuidos High, suggesting tectonic activity or the presence of a paleohigh during the late Jurassic - early Cretaceous
Cuenca Neuquina
068.82 553.28 C62 2018 0015658
