Abstract | The Barnett Shale and overlying units adjacent to the Muenster Arch in Cooke County, Texas, are significantly deformed. Well log and dipmeter data indicate that a west-directed reverse fault system folded and faulted the Barnett Shale and possibly Marble Falls units, and brought in rock of unknown origin. Observations indicate an additional, south-directed faulting event led to offset between wells. These features are likely related to the Late Mississippian through Late Pennsylvanian reactivation of the basement-cored faults of the Muenster Arch. |