2-D Resistivity Imaging Investigation of Long Point, Katy-Hockley, Tomball and Pearland Active Growth Faults, Houston, Texas
By Mustafa Saribudak
Environmental Geophysics Associates (EGA), Austin, Texas 78757
Active growth faults cutting the land surface in the Gulf Coast area may represent a serious geo-hazard. Alt-hough the average movement of these faults is only a few inches (several centimeters) per decade, the poten-tial exists for structural damage to highways, industrial buildings, residential houses and railroads that cross these features.
The author have conducted 2D resistivity imaging surveys at five sites along four known fault systems around great Houston area. These locations included: two separate sites over the Long Point Fault (Moorehead at Westview, and NW section of east Beltway 8 and I-10 intersections) in the southwest Hou-ston; the Katy-Hockley and Tomball faults in the Cyprus Area part, and the Pearland fault in southeast Hou-ston.
Results of 2D resistivity surveys on four faults in the Houston area have identified resistivity anomalies that can be used to locate the faults, determine the extent of near-surface deformation, and provide significant ge-ological information that might be required to mitigate the active faulting in the great Houston and along the Gulf Coast areas.