Ground Fracturing at the Southern End of Summit Ridge Caused by October 17, 1989 Loma Prieta, California, Earthquake Sequence: Maps of Summit Ridge Shear Zones, en Echelon Tension Cracks, Complex and Compound Fractures, and Small Faults that Formed Coactively with the Earthquake Sequence
Sumaryanto Y. Martosudarmo · Arvid M. Johnson · Robert W. Fleming
Jan 1997 · U.S. Geological Survey