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Trench log of the south wall of Trench 00A. Trench log of the south wall of Trench 00A.

Location of trench site and other points along the Hayward Fault. Currently known extent of 1868 surface rupture shown as green highlight band; dashed where subsurface extent of rupture is inferred. Starts indicate localities discussed in Open-File report 99-318: Timing of Paleoearthquakes on the Hayward Fault . Creeping trance extends at least 68 km from P, Point Pinole, to AC, Agua Caliente Creek. Trenching sites: MV, Mira Vista (Hayward Fault Paleoearthquake Group, 1997); MT, Montclair (Lienkamper et al., 1995); MH, Masonic Home (Lienkamper and Borchardt, 1996); TP, Tule Pond (Williams et. al., 1993); Other localities: RM, Rocky Mound key triangulation point of Yu and Segall, (1996); CR,, near Calaveras Reservoir, the branching point of Northern Calaveras fault from fast-creeping Southern Calaveras fault. (Working Group on Northern California Earthquake Potential, 1996.)