Figure 5: Estimated fracture strike and crack density in the Phosphoria derived using seismic AVO at the 43-33 well location, plus interpretation. The fracture strike distribution is far more complex than was originally anticipated; its interpretation appears to be geologically reasonable with most fracture orientations paralleling the major geologic features: the anticline (140 degrees) and the fault (90 degrees). The high values of crack density on the lower right side of the figure are due to edge effects.