1. Geoscience Data Catalog

Digital geologic map of Arizona: a digital database derived from the 1983 printing of the Wilson, Moore, and Cooper 1:500,000-scale map

Online link https://geo-nsdi.er.usgs.gov/metadata/open-file/00-409/metadata.faq.html
Description The Geologic Map of Arizona was compiled at a scale of 1:500,000 by Eldred D. Wilson, Richard T. Moore and John R. Cooper, in 1969 and reprinted in 1977, 1981, and 1983. Comparison of an acetate copy of the 1983 map with existing paper copies of earlier m
Originators Hirschberg, Douglas M. and Pitts, G. Stephen
Publication U.S. Geological Survey Open-File Report 00-409

Related topics

Bedrock geologic units, Geologic maps, Geologic structure, Geology, Geospatial datasets, GeoscientificInformation

States or counties

Arizona

Overview of attributes

The Geologic Map of Upper Clayhole Valley and Vicinity, Mohave County,
Northwestern Arizona includes four geospatial datasets as ARC/INFO
coverages: cv_poly (geology), cv_fold (folds, basalt flow lines),
cv_dip (point data including strike and dip, collapse features,
sinkholes, and volcanic vents), and cv_anno (annotation and geologic
unit labels).  Geospatial entities in ARC/INFO coverages have the
following software-defined attributes: <cover>.pat contains AREA,
PERIMETER, COVER#, and COVER-ID; <cover>.aat contains FNODE#, TNODE#,
LPOLY#, RPOLY#, LENGTH, COVER#, and COVER-ID.  User-defined attributes
are described in detail below.
(1) The coverage cv_poly includes the following feature attribute tables:
(a) a polygon feature attribute table (cv_poly.pat) that describes the
geospatial distribution of surficial units represented in the Postscript
(.eps) and Portable Document Format (.pdf) plotfiles of the map.  (b) an
arc feature attribute table (cv_poly.aat) that describes the contacts and
linear features that bound rock-unit polygons.  For display purposes, the
cv_poly coverage includes an annotation class which contains line types and
arcmarker symbols derived from the coded items LTYPE and PTTYPE respectively.
(2) The coverage cv_fold includes an arc feature attribute table
(cv_fold.aat) that describes linear features (folds and basalt flow lines).
For display purposes, the cv_fold coverage includes an annotation class which
contains line types and arcmarker symbols derived from the coded items LTYPE
and PTTYPE respectively.  Arrowheads indicating plunging folds are drawn
based on values in the coded item PLUNGE.
(3) The coverage cv_dip includes the following: (a) a point feature attribute
table (cv_dip.pat) that describes the position of point data including strike
and dips, collapse features, sinkholes, and volcanic vents.  Symbols are
derived from the item PTTYPE, dip angle in degrees is derived from item DIP,
and strike angle in degrees is in item STRIKE.  (b) cv_dip also contains
annotation for dip values.
(4) The coverage cv_anno, containing subclass anno.unit, is used to
annotate geologic unit labels and fault offsets.  The unit labels are
derived from the coded item PTYPE in the coverage cv_poly.

http://pubs.usgs.gov/mf/2003/2418/cvgeo.pdf

CV_POLY.PAT

Polygon attribute table of coverage

Label Definition
PTYPE Geologic map unit label. Plain text is substituted for conventional geologic age symbols (TR for Triassic) shown on map.

CV_POLY.AAT

Arc attribute table of coverage

Label Definition
LTYPE Type of geologic or geographic feature denoted by a line in the database.
PTTYPE arc marker point type

CV_FOLD.AAT

Arc attribute table of coverage

Label Definition
LTYPE Type of geologic or geographic feature denoted by a line in the database.
PTTYPE Arc marker point type

CV_DIP.PAT

Point attribute table of coverage

Label Definition
PTTYPE The type of planar feature which was observed and the orientation of which was measured at this location.
DIP The inclination of planar structures measured in degrees down from horizontal.
STRIKE The orientation of a horizontal line in an inclined planar structure measured in degrees clockwise from north.