Actividad Tectónica Y Evolución Sedimentaria De Los Depósitos Tithoniano/Valanginiano Temprano, Porción Oriental De La Cuenca Neuquina – Argentina

The aim is to emphasize the use of 3-D seismic (more 2000 Km2), well-logs, cores, bioestratigraphic data to improve pre-existing regional geological models. It permits to explain different traps, provide new opportunities for exploration programs and development planning. The Vaca Muerta, Quintuco and Loma Montosa Formations (Tithonian / Early Valanginian) are transgressive-prograding depositional sequences of deep marine shales and slope to shelf carbonates and clastics deposits, in the Neuquen Basin. This interval has a preserved thickness from 375 to 1100 m and the most important hydrocarbon fields are located in Loma La Lata and Río Neuquén. However, the reservoir conditions are still a main risk factor. In the study area, the stratigraphical record shows that global eustatic sea-level changes rule the influence on sedimentation, modified by the local effects of tectonics episodes (Huincul High). Therefore, tectonism also controls the thickness of the main systems tracts, the areal distribution and the initial profile of the carbonate platform. The influence of this tectonic events is more pronuonced southward. In addition, the tidal-influenced environments appears to have been the strong control in the carbonate platform.