Geologic Map of California: A Digital
Database
G. J. Saucedo
California Div. of Mines and Geology, San
Francisco, CA
A digital
version of the Geologic Map of California (Jennings, 1977)
was completed by the California Division of Mines and Geology in
cooperation with the U.S. Geological Survey. The map is a
digital
database, which was digitized from original scale (1:750,000) publication
plates using ALACARTE, a menu-driven interface developed
by the U.S. Geological Survey for ARC/INFO GIS software. It
is a faithful
digital
representation of the geologic units, faults, and
fold axes as shown on the published Geologic Map of California.
However, some information, such as the names of geologic features
as well as locations of volcanoes and cinder cones is not included.
Geologic mapping is the foundation for any comprehensive study
undertaken to evaluate earth science related societal and environmental
issues. This database will provide a uniform
digital
geologic
coverage for use in analytical applications and production of derivative
maps at a statewide scale. The database is available in ARC/
INFO and MapInfo formats.
AAPG Search and Discovery Article #90904©2001 AAPG Pacific Section Meeting, Universal City, California