Changes

==Facial variations in Vaca Muerta Formation in the margin of the Neuquén basin==

==Facial variations in Vaca Muerta Formation in the margin of the Neuquén basin==

[[File:4.png|400px|thumbnail|{{figure number|4}}Cuts estratigráfico leveled to the ceiling of the Group Low Mendoza, where there are observed the interpreted sequences and its facial changes inside the complex progradante.<ref>Borbolla M. C., C. Cruz, J. Villar, N. Annizzotto, P. Benites, D. Cattaneo, 2014, Formación Vaca Muerta: variación lateral de facies y su implicancia en los cambios de espesor hacia el borde de cuenca. Perspectivas exploratorias en shale oil e la plataforma de Catriel,  Cuenca Neuquina,Argentina. Simposio de Recursos No Convencionales: ampliando el horizonte energético, pp. 321-329</ref>]]

[[File:4.png|400px|thumbnail|{{figure number|4}}Stratigraphic cuts leveled to the ceiling of the Group Low Mendoza, where there are observed the interpreted sequences and its facial changes inside the complex progradante.<ref>Borbolla M. C., C. Cruz, J. Villar, N. Annizzotto, P. Benites, D. Cattaneo, 2014, Formación Vaca Muerta: variación lateral de facies y su implicancia en los cambios de espesor hacia el borde de cuenca. Perspectivas exploratorias en shale oil e la plataforma de Catriel,  Cuenca Neuquina,Argentina. Simposio de Recursos No Convencionales: ampliando el horizonte energético, pp. 321-329</ref>]]

The basal transgressive sequence in this sector of the basin retains the characteristics of sourcerock constant across large areas.<ref>Veiga, R. D., & I. A. Orchuela, 1989, Identificación de niveles generadores de hidrocarburos a partir de técnicas de perfilaje en la formación Vaca Muerta. I Congreso Nacional de Exploración de Hidrocarburos, p. 1061-1093. Mar del Plata, Argentina.</ref>

The basal transgressive sequence in this sector of the basin retains the characteristics of sourcerock constant across large areas.<ref>Veiga, R. D., & I. A. Orchuela, 1989, Identificación de niveles generadores de hidrocarburos a partir de técnicas de perfilaje en la formación Vaca Muerta. I Congreso Nacional de Exploración de Hidrocarburos, p. 1061-1093. Mar del Plata, Argentina.</ref>

The Lowstand System Tract (LST) is not present, the Transgressive System Tract (TST) is very small and corresponds to the regional flood event. The section is dominated by high sea deposits prograding (Highstand System Tracts) where three subsequenceares individualized: A, B and C.

The Lowstand System Tract (LST) is not present, the Transgressive System Tract (TST) is very small and corresponds to the regional flood event. The section is dominated by high sea deposits prograding (Highstand System Tracts) where three subsequences are individualized: A, B and C.

=== Basal transgressive section ===

=== Basal transgressive section ===

The relationship onlap on Tordillo Formation is observed over long distances as a result of the gentle slope of the substrate, recognizing princpalmente in the West to the side of Santiagueñohemigraben.

The relationship onlap on Tordillo Formation is observed over long distances as a result of the gentle slope of the substrate, recognizing princpalmente in the West to the side of Santiagueñohemigraben.

The very gradual decline in the power of this section of the VacaMuerta Formation is affected eastward by increased thickness of about 15 meters, which is linked to the preservation of the precuyanodepocentre east of a high Trend in the area of Loma Chica and Punta Rosada, generated by [[tectonic inversion]] possible pre-Jurassic Cycle (Arregui et al. 2005).

The very gradual decline in the power of this section of the Vaca Muerta Formation is affected eastward by increased thickness of about 15 meters, which is linked to the preservation of the precuyanodepocentre east of a high Trend in the area of Loma Chica and Punta Rosada, generated by [[tectonic inversion]] possible pre-Jurassic Cycle (Arregui et al. 2005).

=== Progradating upper section ===

=== Progradating upper section ===