A seismic reflection study of small offset faults related to the Rough Creek fault zone in western Kentucky

In November, 2004 a high resolution seismic reflection survey was collected in western Kentucky. The survey was designed to image and provide improved resolution of shallow structures. Data for three north-south trending seismic profiles were collected to determine the extent and nature of any small offset faults observed in the area.; The results of the seismic reflection study identified seven faults on each of the three seismic lines. The faults are all high-angle with both reverse and normal senses of movement. The gradient measurements between the faults show that the gradients are shallow being on average 0.028 feet/foot. Two-dimensional modeling strongly suggests that displacements on the faults interpreted from the collected data are 5 feet or less. Therefore the faults interpreted on the seismic reflection records most likely display small offsets of 5 feet or less.