Inversion Structures and Habitat of Oil in Western Chubut and Santa Cruz, Argentina. The San Bernardo ("Bemardides") estructnred province is a polyphase deformed belt that transects the peri-Andean part of the Argentine Patagonia, where it Jays distinctly separated from the fold and thrust belt that fringes the western side of the South American plate. The structured zone encompasses a NNW-SSE trending band in excess of 600 Ian long and mostly less than 100 km wide. The area features faults and folds that involve a Precambrian to Middle Paleozoic basement, Upper Paleozoic to Jurassic sedimentay and volcanogenic wedges, and the Cretaceous non-marine fill of the intracratonic San Jorge Basin. The Cretaceous carapace is dominated by a structural style showing discontinuous, narrow and box-shaped folds associated to east and west verging reverse faults. Oil finds are restricted to the lowlying unbreached segment between the Senguerr and Deseado rivers, where seismic control suggest that the anticlinal structures developed because contractional reactivation of pre-existing normal and strike-slip faults. Highlights of the San Bernardo petroleum system can be outlined as follows


Article metrics loading...

Loading full text...

Full text loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error