Preston Railroad Cut

• Austin Chalk Outcrop
• Cretaceous aged Shallow marine Fm.
• Bedrock of the Dallas Skyline
• Several Large oil plays in South and East Texas
• Important Fm for learning about fractured reservoirs

(A,B) The outline of the horst fault plane aligned on each side of the fault and extended (edtruded) from north side of cut to south side.

(C,D) Each side of fault plane filled with color.

(E) The planes align the faults on both sides of the cut indicating acceptable accuracy and the interpretation that two sides of horst are indeed one in the same.