Digital database of recently active traces of the Hayward Fault, California

The purpose of this map is to show the location of and evidence for recent
movement on active fault traces within the Hayward Fault Zone, California. The
mapped traces represent the integration of the following three different types
of data: (1) geomorphic expression, (2) creep (aseismic fault slip),and (3)
trench exposures. This publication is a major revision of an earlier map
(Lienkaemper, 1992), which both brings up to date the evidence for faulting and
makes it available formatted both as a digital database for use within a
geographic information system (GIS) and for broader public access interactively
using widely available viewing software. The pamphlet describes in detail the
types of scientific observations used to make the map, gives references
pertaining to the fault and the evidence of faulting, and provides guidance for
use of and limitations of the map.

[Summary provided by the USGS.]