Basement-Involved Strike-Slip Faulting

Oblique view of top surface of scaled clay model of basement-involved strike-slip faulting. The clay was deformed as a fault system propagated upward from a rigid basement block into the clay. The pink passive markers on the top surface of the clay exhibit left-lateral offset. The fault zone consists of network of R1 Reidel shears oblique to the trend of the master fault linked by faults subparallel to the trend of the master fault. Note the development of small highs and lows in the fault zone, even though the basement fault is perfectly planar. The experimental models were run at Mobil Technology Company by Martha Withjack, Roy W. Schlische, and Gloria Eisenstadt.