Relations between thermal, photographic, and topographic linears and mapped and measured structures in a Precambrian terrane in Colorado

Comparison of orientation of faults, foliations, and joints, observed during geologic mapping in Colorado, with thermal, photographic, and topographic linears shows that topographic linears are statistically useful indicators of mappable faults and fractures, photographic linears are less useful, and thermal linears, believed to represent zones of moisture concentration, are parallel to faults, foliations, and, a statistically minor, but more open joint set.