The current Eagle Ford play in South Texas has regenerated exploration interest in the Maverick Basin area. The greater Maverick Basin is shown to consist of several sub-basins, each having a unique tectonic character. Three broad Cretaceous basins overlie narrow Jurassic basins that are part of a left-stepping rift system associated with a regional southeast-northwest shear zone. Two key elements in the interpretation of the northern and central basins are the qualitative and quantitative gravity/magnetic 2D structural models, made along seismic profiles and constrained by well data and surface geology. This new look at the Maverick area basement tectonics may not provide direct leads to current Cretaceous plays but it could well provide new concepts regarding the evolution and relationships of the various sub-basins and regional faulting. More importantly, it could stimulate new ideas about exploring for several potential new and deeper plays in the Jurassic and pre-Jurassic section.
A New Look at Maverick Basin Basement Tectonics
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