Spatial digital database for the geologic map of the east part
of the Pullman 1°x2° quadrangle, Idaho
The paper geologic map of the east part of the Pullman 1 x 2
-degree quadrangle, Idaho (Rember and Bennett, 1979) was scanned
and initially attributed by Optronics Speciality Corp. Inc.
(Northride, CA) and remitted to the U.S. Geological Survey for
furter attribution and publication of the geospatial digital
files. The resulting digital geologic map GIS can be queried in
many ways to produce a variety of geological maps.
This GIS dataset consists of one major Arc/Info dataset: a line
and polygon file (pull250k) that contains geologic contacts and
structures (lines) and geologic map rock units (polygons).
Rember, William C. (compiler), Bennett, Earl H. (compiler), and Kayser, Helen Z. (digital compiler), 2001, Spatial digital database for the geologic map of the east part of the Pullman 1°x2° quadrangle, Idaho: U.S. Geological Survey Open-File Report 01-262, U.S. Geological Survey, Menlo Park, CA.
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 12.74271184007
Ordinates (y-coordinates) are specified to the nearest 12.74271184007
Planar coordinates are specified in Meters
The horizontal datum used is North American Datum of 1927.
The ellipsoid used is Clarke 1866.
The semi-major axis of the ellipsoid used is 6378206.4.
The flattening of the ellipsoid used is 1/294.98.
The 'Digital geologic map of the east part of the Pullman 1 x 2-
degree quadrangle, Idaho ...' contains a detailed description of
each attribute code. The database includes a geologic linework
arc attribute table, pull250k.aat, that relates to the pull250k
.con (contact look-up table), pull250k.st2 (structure look-up
table), and pull250k.ref (source reference look-up table) files;
a rock unit polygon attribute table, pull250k.pat, that relates
to the pull250k.ru (rock unit look-up table) and pull250k.ref
(source reference look-up table) files.
Optronics Specialty Corp., Inc. scanned the Rember and Bennett
(1979) geologic map and provided minimally attributed ArcInfo
interchange-format files to the USGS;
Helen Z. Kayser (contractor) attached and attributed an interim
geologic map data model; and
Michael Zientek (USGS) and Pamela D. Derkey (USGS) visually
compared the hard copy plots with the source documents.
This dataset was developed to provide a geologic map GIS of the
east part of the Pullman 1:250,000 quadrangle for use in future
spatial analysis by a variety of users. These data can be
printed in a variety of ways to display various geological
features or used for digital analysis and modeling. This
database is not meant to be used or displayed at any scale
larger than 1:250,000 (e.g. 1:100,000 or 1:24,000).
The published paper geologic map was scanned by Optronics
Speciality Corp., Inc.
(process 2 of 3)
The digital files were attributed by Helen Z. Kayser (contractor)
at the USGS Spokane Field Office using an iterim geologic map
data model. The data were checked for position by comparing
plots of the digital data to the source.
Date: 21-May-2001 (process 3 of 3)
Creation of original metadata record
Person who carried out this activity:
How consistent are the relationships among the observations, including topology?
Polygon and chain-node topology present. Polygons intersecting
the neatline area closed along the border. Segments making up
the outer and inner boundaries of a polygon tie end to end to
completely enclose the area. Line segments are a set of
sequentially numbered coordinate pairs. No duplicate features
exist nor do duplicate points in a data string. Intersecting
lines are separated into individual line segments at the point
of intersection. All nodes are represented by a single
coordinate pair which indicates the beginning or end of a line
This digital database is not meant to be used or displayed at
any scale larger than 1:250,000 (e.g., 1:100,000, 1:24,000).
Any hardcopies utilizing these data sets shall clearly
indicate their source. If the user has modified the data in
any way, they are obligated to describe the types of
modifications they have performed on the hardcopy map. User
specifically agrees not to misrepresent these data sets, nor
to imply that changes they made were approved by the U.S.
The U.S. Geological Survey (USGS) provides these geographic
data "as is". The USGS makes no guarantee or warranty
concerning the accuracy of information contained in the
geographic data. The USGS further make no warranties, either
expressed or implied as to any other matter whatsoever,
including, without limitation, the condition of the product,
or its fitness for any particular purpose. The burden for
determined fitness for use lies lies entirely with the user.
Although these data have been processed successfully on
computers at the USGS, no warranty, expressed or implied, is
made by the USGS regarding the use of these data on any other
system, nor does the fact of distribution constite or imply
any such warranty.
In no event shall the USGS have any liability whatsoever for
payment of any consequential, incidental, indirect, special,
or tort damages of any kind, including, but not limited to,
any loss of profits arising out of the delivery, installation,
operation, or support by the USGS.
This digital geologic map database of the east part of the
Pullman 1 x 2-degree quadrangle is not meant to be used or
displayed at any scale larger than 1:250,000 (e.g., 1:100,000