16 wells drilled to test the 3 to 6 million acres of sedimentary rocks that are concealed and virtually unexplored beneath mountain-front thrusts. One recent test is a major gas discovery, another a development oil well. These wells have also helped define the structural geometry. The geologic success of these wells has encouraged leasing and seismic acquisition on every other mountain-front thrust in the Rockies.--Modified journal abstract.

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