Digital Database Description for USGS OF 00-376

Introduction

 

This Open-File report is a digital geologic map database. This pamphlet
serves to introduce and describe the digital data. There is no paper map
included in the Open-File report. The report does include, however,
PostScript and PDF plot files containing images of two geologic map
sheets with explanation, as well as text files describing the geology of
the area and digital database. For those interested in a paper plot of
information contained in the database or in obtaining the PostScript
plot files, please see the section entitled \"For Those Who Don\'t Use
Digital Geologic Map Databases\" below.

This digital map database, largely compiled from new mapping by the
authors, represents the general distribution of bedrock and surficial
deposits of the Roseburg 30 x 60 minute quadrangle along the
southeastern margin of the Oregon Coast Range and its tectonic boundary
with Mesozoic terranes of the Klamath Mountains. Together with the
geologic pamphlet, it provides current information on the geologic
structure and stratigraphy of the area covered. The database delineates
map units that are identified by general age and lithology following the
stratigraphic nomenclature of the U.S. Geological Survey. The scale of
the source maps is 1:24,000, but the Quaternary contacts and structural
data have been much simplified for the 100,000-scale map and database.
The spatial resolution (scale) of the database is 1:100,000 or smaller.
The content and character of the database, as well as three methods of
obtaining the database, are described below.

**For those who don\'t use digital geologic map databases** 

For those interested in the geology of the Roseburg, Oregon 30 x 60
minute quadrangle who do not use an ARC/INFO compatible Geographic
Information System (GIS), we have provided two sets of plot files
containing images of much of the information in the database. There is a
set of images in PostScript format and another in Adobe Acrobat PDF
format (see the sections "PostScript plot files" and "PDF plot files"
below).

Those interested who have computer capability can access the plot file
packages in any of the three ways described below (see the section
\"Obtaining the digital database and plot file packages\"). However, it
should be noted the plot file packages do require gzip and tar utilities
to access the plot files. Therefore additional software, available free
on the Internet, may be required to use the plot files (see section
\"Tar files\").

Those without computer capability can obtain plots of the map files
through USGS plot-on-demand service for digital geologic maps (see
section \"Obtaining plots from USGS Open-File Services\") or from an
outside vendor (see section \"Obtaining plots from an outside vendor\").

**Digital Open-File contents**

This Open-File report consists of three digital packages. The first is
the **PostScript Plotfile Package**, which consists of PostScript plot
files of a geologic map with explanation (Sheets 1-2), as well as a PDF
version of the geology pamphlet and this digital database description or
readme file. The second is the **PDF Plotfile Package**, and contains
the same plotfiles as the first package, but in Portable Document Format
(PDF). The third is **the Digital Database Package**, and contains the
geologic map database, and the supporting data, including base maps, map
explanation, geologic description pamphlet with references, a database
description pamphlet, and metadata.

**PostScript plot file package**

This package contains the images described here in PostScript format
(see below for more information on PostScript plot files):

rb_sh1.ps A PostScript plottable file containing an image of the
geologic map and base maps of the Roseburg 30 x 60 minute quadrangle at
a scale of 1:100,000 (Sheet 1).

rb_sh2.eps A PostScript plottable file containing an image of the cross
sections, description of map units, references, source of mapping of
Roseburg 30 x 60 minute quadrangle at a scale of 1:100,000 (Sheet 2).

rb_geol.pdf A PDF file of a report containing detailed unit descriptions
and geological information, sources of data, and references cited, and
database description.

rb_readme.pdf This file as a PDF file.

PDF plotfile package

This package contains the images described here in PDF format (see below
for more information on PDF plot files):

rb_sh1.pdf A PDF containing an image of the geologic map and base map of
the Roseburg 30 x 60 minute quadrangle at a scale of 1:100,000,
correlation of map units and list of map units (Sheet 1).

rb_sh2.pdf A PDF containing an image of the cross sections, description
of map units, references, source of mapping of Roseburg 30 x 60 minute
quadrangle at a scale of 1:100,000 (Sheet 2).

rb_geol.pdf A PDF of a report containing detailed unit descriptions and
geological interpretation, plus figures tables, sources of data, and
references cited.

rb_readme.pdf This file as a PDF file.

Digital database and metadata package

The database and metadata package includes geologic map database files
for the the Roseburg 30 x 60 minute quadrangle. The digital maps, or
coverages, along with their associated INFO directory have been
converted to uncompressed ARC/INFO export files. ARC export files
promote ease of data handling, and are usable by some Geographic
Information Systems in addition to ARC/INFO (see below for a discussion
of working with export files). Raster data are stored in ARC grid format
rather than export format to reduce file size. The ARC export files and
associated ARC/INFO coverages, grids, and directories, as well as the
additional digital material included in the database, are described
below:

**ARC/INFO Resultant Description of Coverage**

**export file Coverage**

\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\--
\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\--
\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\--

# Roseburg quadrangle

rb_geo.e00 rb_geo/ Faults, depositional contacts, and rock units in the
quadrangle

rb_stx.e00 rb_stx/ Geologic attitudes as points include pttype, strike,
dip fields,

dip values as annotation, fold axis as arcs

rb_well.e00 rb_well/ Wells as points

rb_xsec.e00 rb_xsec/ Lines of cross sections for Roseburg geology map

**ARC/INFO Description of Grid**

**Grids**

\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\--
\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\--

rb_grid Roseburg color geology grid merged with grid of

topographic base

The database package also includes the following files:

 ASCII text files, including metadata, PostScript plot files, PDF files
of the two pamphlets, Encapsulated PostScript files from Adobe
Illustrator 8 used as map collars, ARC Macro Language files for plotting
maps, custom ARC lineset and a ARC Macro Language file for conversion of
ARC export files into ARC coverages:

 rb_geol.pdf A PDF plot file of a report containing detailed unit
descriptions and geological

information, sources of data, and references cited

rb_readme.pdf This file as a PDF file.

rb_meta.txt A metadata file in ASCII text format

import.aml ASCII text file in ARC Macro Language to convert ARC export
files to ARC coverages in

ARC/INFO

rb_sh1o.eps Encapsulated PostScript Adobe Illustrator 8 file (map
collar) for the Roseburg

quadrangle

rb_sh2.eps Encapsulated PostScript Adobe Illustrator 8 file for Roseburg
quadrangle (Sheet 2)

roseburg.aml Plot AML generates uncompressed PostScript of Roseburg
quadrangle at 600 dpi (Sheet 1)

geol61.lin Custom ARC lineset

johanna.txt Custom ARC textset 

landu Parameter file in roseburg.aml to uncompress and rotate PostScript
file 90 degrees

uncom Parameter file in roseburg.aml to uncompress PostScript file

fnt038 Arc/Info font used with markerset

fnt039 Arc/Info font used with markerset

sp5101_utm10.prj Arc/Info projection file for Roseburg dataset

rbgeo2bs.rmp Arc/Info grid remap table for colors (Roseburg)

info Arc/Info directory

log Arc/Info log file

alc1.shd Arc/Info shadeset (custom)

geologyk.mrk Arc/Info markerset (custom)

oilgas.mrk Arc/Info markerset (non-custom)

geol61b.lut Arc/Info line look up table (internal) exported as
geol61b.lut.e00

droid.lut Arc/Info marker look up table (internal) exported as
droid.lut.e00

fmarkers.lut Arc/Info look up table for fold and fault markers
(internal) exported as fmarkers.lut.e00

rbpoly.lut Arc/Info look up table (internal) exported as rbpoly.lut.e00

 The following supporting directory is not included in the database
package, but is produced in the process of reconverting the export files
into ARC coverages:

info/ INFO directory containing files supporting the databases.

**Tar files**

The three data packages described above are stored in tar (UNIX tape
archive) files. A tar utility is required to extract the database from
the tar file. This utility is included in most UNIX systems, and can be
obtained free of charge over the Internet from Internet Literacy\'s
Common Internet File Formats Webpage
(*http://www.matisse.net/files/formats.html*). Both tar files have been
compressed, and may be uncompressed with **gzip**, which is available
free of charge over the Internet via links from the USGS Public Domain
Software page
(*http://edcwww.cr.usgs.gov/doc/edchome/ndcdb/public.html*). For
software that enables the user to uncompress and extract the database
files on a Windows or Macintosh computer, go to the U.S. Geological
Central Region server (http://greenwood.cr.usgs.gov/maps/software.html)
or WinZip (http://www.winzip.com). When the tar file is uncompressed and
the data is extracted from the tar file, a directory is produced that
contains the data in the package as described above. The specifics of
the tar files are listed below:

**Name of Size of Directory Data package**

**compressed compressed produced when contained**

**tar file tar file extracted from**

**(uncompressed) tar file**

\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\--
\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\--
\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\--
\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\--

rbofrps.tar.gz 38.8 MB (395 MB) rbofrps/ PostScript Plotfile Package

rbofrpdf.tar.gz 15 MB (15.9 MB) rbofrpdf/ Portable Document Format
Package

rbofr.tar.gz 27.7 MB (71.5 MB) rbofr/ Digital Database Package

**PostScript plot files**

For those interested in the geology of the Roseburg, Oregon 30 x 60
minute quadrangle who don\'t use an ARC/INFO compatible GIS system we
have included a separate data package with three PostScript plot files.
The first two each contain a color plot of the geologic map database at
1:100,000 scale (Sheet 1 and 2, rb_sh1.ps, rb_sh2.eps). Because this
release is primarily a digital database, the plot files (and plots
derived therefrom) have not been edited to conform to U.S. Geological
Survey standards. Small units have not been labeled with leaders and in
some instances map features or annotation overlap. Sample plots by the
authors have proven to be quite legible and useful, however. In
addition, two PDF files, one containing the geologic description and
discussion, and the second containing the database description (this
file) is provided.

The PostScript image of the geologic maps are 50 by 35 inches (Sheet 1),
and 35 by 32 inches (Sheet 2), so they require a large plotter to
produce paper copies at the intended scale. Both map sheets are rotated
90 degrees for plotting on 36 inch wide paper. Both pamphlets are black
and white 8.5 by 11 inch multipage format.

The PostScript plot files for these maps were produced by the PostScript
command using the uncompressed option in ARC/INFO version 7.2.1 for
Unix. The PDF files for the pamphlets were produced in Microsoft Word
using the Export as PDF File. The nine figures for the geology pamphlet
were produced in Adobe Illustrator and saved as version 8 Encapsulated
PostScript files, as well as the map template (rb_sh1o.eps), which
contains a color plot of the map key and map collar, (it was used as
Placed EPS in the PostScript file from ARC/INFO) and Sheet 2
(rb_sh2.eps), which is the Description of Map Units, cross-sections,
index map, sources of mapping and other graphics.

The final ARC/INFO PostScript file (rb_sh1.ps) contains an Encapsulated
PostScript file generated by Adobe Illustrator verion 8 (rb_sh1o.eps)
and placed into the ARC/INFO graphic metafile by an ARC plotting AML
(roseburg.aml). This EPS file includes the marginal graphics and
explanation of the map. The final version of Sheet 2 is from Adobe
Illustrator 8 directly saved as EPS and not taken into ARC/INFO
(rb_sh2.eps).

The roseplot.aml uses the coverages and grids to produce a printable
PostScript file of sheet 1 of the Roseburg files. The import.aml imports
all the export (.e00) files into ARC/INFO.

PDF plot files

We have also included a second digital package containing PDF versions
of the PostScript map sheets and pamphlet described above. Adobe Acrobat
PDF (Portable Document Format) files are similar to PostScript plot
files in that they contain all the information needed to produce a paper
copy of a map or pamphlet and they are platform independent. Their
principal advantage is that they require less memory to store and are
therefore quicker to download from the Internet. In addition, PDF files
allow for printing of portions of a map image on a printer smaller than
that required to print the entire map without the purchase of expensive
additional software. All PDF files in this report have been created from
PostScript plot files using Adobe Acrobat Distiller. In test plots we
have found that paper maps created with PDF files contain almost all the
detail of maps created with PostScript plot files. We would, however,
recommend that those users with the capability to print the large
PostScript plot files use them in preference to the PDF files.

To use PDF files, the user must get and install a copy of Adobe Acrobat
Reader. This software is available free from the Adobe website
(***http://www.adobe.com***). Please follow the instructions given at
the website to download and install this software. Once installed, the
Acrobat Reader software contains an on-line manual and tutorial.

There are two ways to use Acrobat Reader in conjunction with the
Internet. One is to use the PDF reader plug-in with your Internet
browser. This allows for interactive viewing of PDF file images within
your browser. This is a very handy way to quickly look at PDF files
without downloading them to your hard disk. The second way is to
download the PDF file to your local hard disk, and then view the file
with Acrobat Reader. We strongly recommend that large map images be
handled by downloading to your hard disk, because viewing them within an
Internet browser tends to be very slow.

To print a smaller portion of a PDF map image using Acrobat Reader, it
is necessary to cut out the portion desired using Acrobat Reader and the
standard cut and paste tools for your platform, and then to paste the
portion of the image into a file generated by another software program
that can handle images. Most word processors (such as Microsoft Word)
will suffice. The new file can then be printed. Image conversion in the
cut and paste process, as well as changes in the scale of the map image,
may result in loss of image quality. However, test plots have proven
adequate.

**Digital database format**

The databases in this report were compiled in ARC/INFO, a commercial
Geographic Information System (Environmental Systems Research Institute,
Redlands, California), with version 3.0 of the menu interface ALACARTE
(Fitzgibbon and Wentworth, 1991, Fitzgibbon, 1991, Wentworth and
Fitzgibbon, 1991). The files are in either GRID (ARC/INFO raster data)
format or COVERAGE (ARC/INFO vector data) format. Coverages are stored
in uncompressed ARC export format (ARC/INFO version 7.2.1 for Unix).
ARC/INFO export files (files with the .e00 extension) can be converted
into ARC/INFO coverages in ARC/INFO (see below) and can be read by some
other Geographic Information Systems, such as MapInfo via ArcLink and
ESRI\'s ArcView (version 1.0 for Windows 3.1 to 3.11 is available for
free from ESRI\'s web site: http://www.esri.com). The digital
compilation was done in version 7.2.1 of ARC/INFO for Unix.

**Obtaining the Digital Database and Plotfile Packages**

 The digital data can be obtained in any of three ways:

a\. From the Western Region Geologic Information Web Page.

b\. Anonymous ftp over the Internet

c\. Sending a CD with request

 **To obtain tar files of database or plot file packages from the USGS
web pages:**

> The U.S. Geological Survey now supports a set of graphical pages on
> the World Wide Web. Digital publications (including this one) can be
> accessed via these pages. The location of the main Web page for the
> entire USGS is http://www.usgs.gov

The Web server for digital publications from the Western Region is
http://geopubs.wr.usgs.gov

Go to http://geopubs.wr.usgs.gov/open-file/of00-376 to access this
publication. Besides providing easy access to the entire digital
database, the Western Region Web page also affords easy access to the
PostScript plot files for those who do not use digital databases (see
below).

**To obtain tar files of database or plot file packages by ftp:**

> The files in these reports are stored on the U.S. Geological Survey
> Western Region FTP server. The Internet ftp address of this server is
> ftp://geopubs.wr.usgs.gov
>
> The user should log in with the user name anonymous and then input
> their e-mail address as the password. This will give the user access
> to all the publications available via ftp from this server.
>
> The files in this report are stored in the subdirectory**:
> pub/open-file/of00-376**

To obtain tar files of database or plot file packages on CD:

Database files, PostScript plot files, and related files can be obtained
by sending a CD with request and return address to:

Roseburg, Oregon 30 x 60 minute Geologic Map Plotfiles

c/o Database Coordinator

> U.S. Geological Survey
>
> 345 Middlefield Road, M/S 975
>
> Menlo Park, CA 94025

**Do not omit any part of this address!**

NOTE: Be sure to include with your request the exact names, as listed
above, of the tar files you require. An Open-File Report number is not
sufficient, unless you are requesting both the database package and plot
file package for the report. The compressed tar file will be returned on
the CD.

**Obtaining plots from a commercial vendor**

Those interested in the geologic maps of the Roseburg, Oregon 30 x 60
minute quadrangle, but who use neither a computer nor the Internet, can
still obtain the information. We will provide the PostScript plot files
on CD (details below) for use by commercial vendors who can make
large-format plots. Send a blank CD with request and return address to: 

Roseburg, Oregon 30 x 60 minute Geologic Map Plotfiles

c/o Database Coordinator

U.S. Geological Survey

345 Middlefield Road, M/S 975

Menlo Park, CA 94025

 **Do not omit any part of this address!** The compressed tar file will
be returned on the CD.

Make sure your vendor is capable of reading these CDs and PostScript
plot files. Important information regarding CD file format is included
in the sections \"Database Release Format\", \"Tar Files\", and
\"PostScript Plot Files\" above, so be certain to provide a copy of this
document to your vendor. 

Obtaining plots from USGS Open-File Services

U.S. Geological Survey is providing a plot-on-demand service for map
files, such as those described in this report, through Open-File
Services. In order to obtain plots, contact Open-File Services at:

**USGS Information Services**

> **Box 25286**
>
> **Denver Federal Center**
>
> **Denver, CO 80225-0046**
>
> **(303) 202-4200**
>
> **1-800-USA-MAPS**
>
> **FAX: (303) 202-4695**
>
> **e-mail:** <infoservices@usgs.gov>

Be sure to include with your request the Open-File Report number and the
exact names, as listed in the Database Contents section above, of the
plot files you require. An Open-File Report number and its letter alone
may not be sufficient, unless you are requesting plots of all the plot
files for that report.

 **Converting ARC export files**

ARC export files are converted to ARC coverages using the ARC command
IMPORT with the option COVER. To ease conversion and maintain naming
conventions, we have included an ASCII text file in ARC Macro Language
that will convert all of the export files in the database into coverages
and create the associated INFO directory. From the ARC command line
type: **Arc: &run import.aml**

ARC export files can also be read by some other Geographic Information
Systems. Please consult your GIS documentation to see if you can use ARC
export files and the procedure to import them.

 **Digital compilation**

Negative separates (culture, topology, drainage, and open water) of USGS
topographic bases and geologic mylar tracings were scanned at 600 and
400 dpi, respectively, and saved as 1-bit TIFF bi-level compression type
1 (uncompressed) with rows per strip = 12000 on an IDEAL rasterizing
scanner, then images were converted to ESRI ARC/INFO grids. The
topgraphic base map separates remain as grids, and are merged at the
last step with the colored geology polygrids. The raster geology grids
were converted to vector coverages with ARC/INFO\'s gridline routine.
Alacarte and some custom menus and amls were used to project, transform,
edit, tag and build, lines, polygons, and points in each map. A digital
layout or map collar was made with Adobe Illustrator 8 and saved to EPS.
The plot aml (roseburg.aml) runs in ARC/INFO and uses the coverages,
grids, and EPS to make uncompressed and rotated PostScript files. All
maps are in UTM projection, zone 10, units meters, 1:100,000 scale. The
digital pamphlets were exported from Microsoft Word as PDF or edited in
Acrobat.

**Annotation**

Within the structural coverage is an annotation showing dip amount
associated with each attitude. This annotation layer is called by the
plot aml used by ARC/INFO, using a custom ARC textset, johanna.txt. The
plot aml converts all coverages into a PostScript file. Annotation is
also used to label some of the geology polygons. Smaller polygons, in
which the label would not fit, can be identified on plots by the color
of the polygon.

**Base maps**

The U.S. Geological Survey is the source of the base maps. The bases
used are 1:100,000 scale topographic maps, which have a 50-foot contour
intervals (1979). One base map layer for each of the four separates
(culture, topology, drainage, and open water) was prepared from
negatives. Topographic base separates for the Roseburg 30 x 60 minute
quadrangle were scanned on an IDEAL rasterizing scanner at 600 dpi as
1-bit TIFF images. Scanned TIFF images of the bases were registered and
rectified in ARC/INFO and then made into grids. The images were clipped
using ARC/INFO grid to conform to the area of the geologic coverages and
merged with the geology grid to give an apparent transparent color image
of both combined. These base map-geology layers are digital images but
no information other than location is attached to the lines. The
base-geology maps are provided for reference only.

 **Spatial resolution**

Uses of this digital geologic map should not violate the spatial
resolution of the data. Although the digital form of the data removes
the constraint imposed by the scale of a paper map, the detail and
accuracy inherent in map scale are also present in the digital data. The
fact that this database was edited at a scale of 1:100,000 means that
higher resolution information is not present in the dataset. Plotting at
scales larger than 1:100,000 will not yield greater real detail,
although it may reveal fine-scale irregularities below the intended
resolution of the database. Similarly, where this database is used in
combination with other data of higher resolution, the resolution of the
combined output will be limited by the lower resolution of these data.

 **Database specifics**

The map databases consist of ARC coverages and supporting INFO files,
which are stored in a UTM (Universal Transverse Mercator) projection
(Table 1). Digital tics define a 30 x 60 minute grid of latitude and
longitude in the coverages corresponding with quadrangle corners.

** Table 1 -** *Map Projection*

The maps are stored in UTM projection

PROJECTION UTM

UNITS METERS -on the ground

ZONE 10 -UTM zone

PARAMETERS

END

The content of the geologic database can be described in terms of the
lines, points, and the areas that compose the map. Descriptions of the
database fields use the terms explained in Table 2.

** Table 2** *- Field Definition Terms*

ITEM NAME name of the database field (item)

WIDTH maximum number of digits or characters stored

OUTPUT output width

TYPE B-binary integer, F-binary floating point number,

I-ASCII integer, C-ASCII character string 

N. DEC. number of decimal places maintained for floating point numbers

 

Lines

The lines (arcs) are recorded as strings of vectors and are described in
the arc attribute table (Table 3). They define the boundaries of the map
units, folds, faults, and the map boundaries. These distinctions,
including the geologic identities of the unit boundaries, are recorded
in the LTYPE field according to the line types listed in Table 4.

Table 3 - *Content of the Arc Attribute Tables*  

ITEM NAME WIDTH OUTPUT TYPE N.DEC Description

 FNODE# 4 5 B starting node of arc (from node)

 TNODE# 4 5 B ending node of arc (to node)

 LPOLY# 4 5 B polygon to the left of the arc

 RPOLY# 4 5 B polygon to the right of the arc

 LENGTH 4 12 F 3 length of arc in meters

 \<coverage\># 4 5 B unique internal control number

 \<coverage\>-ID 4 5 B unique identification number

 LTYPE 35 35 C line type (see Table 4)

 SEL 1 1 I user-defined field used to save a selected set

SYMB 3 3 I user defined field used to save symbol

assignments (such as color)

Table 4 - *Line Types Recorded in the LTYPE Field (listed by coverage
name. LTYPE ending with \"m\" or \"\_\" is for a cartographic plotting
purposes to cause a symbol to plot at a specific location on that
line).*

rb_geo

atten. fault, certain

atten. fault, concealed

atten. fault, inferred

atten. fault, inferred, queried

contact, certain

contact, concealed

contact, concealed, queried

contact, inferred

contact, inferred, queried

dike

fault inferred

fault, approx. located

fault, certain

fault, certainm

fault, concealed

fault, concealed, queried

detachment fault, certain

detachment fault, inferred

detachment fault, inferred, queried

fault, inferred

fault, inferred, queried

map boundary, certain

normal fault, certain

normal fault, certainm

normal fault, concealed

normal fault, concealedm

normal fault, inferred

normal fault, inferred, queried

normal fault, inferred, queriedm

normal fault, inferredm

s.s. fault, l.l., certain

s.s. fault, r.l., certain

s.s. fault, r.l., concealed

scratch boundary, certain

shear zone, certain

thrust fault, certain

thrust fault, concealed

thrust fault, concealed, queried

thrust fault, inferred

thrust fault, inferred, queried

thrust fault, inferred, queried\_

water boundary, certain

rb_stx

f.a., anticline, certain

f.a., anticline, certainm

f.a., anticline, concealed

f.a., anticline, concealed, queried

f.a., anticline, concealedm

f.a., anticline, inferred

f.a., anticline, inferred, queried

f.a., anticline, inferredm

f.a., anticline, plunge

f.a., o.t. anticline, certain

f.a., o.t. anticline, certainm

f.a., o.t. syncline, certain

f.a., o.t. syncline, certainm

f.a., o.t. syncline, inferred

f.a., syncline, certain

f.a., syncline, certainm

f.a., syncline, concealed

f.a., syncline, concealedm

f.a., syncline, inferred

f.a., syncline, inferred, queried

f.a., syncline, inferredm

f.a., syncline, plunge

rb_xsec

cross-section line

rb_well

This coverage does not have an arc attribute table

**Areas**

Map units (polygons) are described in the polygon attribute table (Table
5). The identities of the map units from compilation sources are
recorded in the PTYPE field by map label (Table 6). Note that ARC/INFO
coverages cannot contain both point and polygon information, so only
coverages with polygon information will have a polygon attribute table,
and these coverages will not have a point attribute table. More complete
descriptions of the various rock units can be found in the geologic
pamphlet of this report or Sheet 2.

 

**Table 5** *- Content of the Polygon Attribute Tables*

 

ITEM NAME WIDTH OUTPUT TYPE N.DEC Description

AREA 4 12 F 3 area of polygon in square meters

 PERIMETER 4 12 F 3 length of perimeter in meters

 \<coverage\># 4 5 B unique internal control number

 \<coverage\>-ID 4 5 B unique identification number

 PTYPE 35 35 C unit label (Table 6)

SEL 1 1 I user defined field used to save a selected set

SYMB 3 3 I user defined field used to save symbol

assignments (such as color)

**Table 6** *- Map Units*

(See Sheet 2 for descriptions of units)

Qf

Qcl

Qls

Qft

Qoft

Td

Tbcu

Tbcl

Tbf

Taf

Tsf

Tvs

Tc

Tis

Tib

Tia

Tes

Teb

Tebm

Tee

Ttbs

Ttbm

Tth

Tths

Ttts

Tttm

Tcv

Tw

Twrc

Twc

Twr

Twrm

Twbc

Twst

Tm

Tmsl

Tmsm

Tmss

Tmm

Tmms

Tmcs

Tbsc

Tbr

Tbrm

Trbs

Trs

Trc

Tsrt

Tsru

Tsr

Tidb

KJda

KJdm

KJdd

KJd2

Kdc

KJr

KJrc

KJms

KJhf

KJag

KJi

KJgd

KJhd

KJdi

KJdt

m

Jrv

Jri

Jrvs

Jris

Jrs

amp

bs

cht

di

dio

gs

gs-di

kn

ls

mv

sp

sp+gs

water

Points

Data gathered at a single locality (points) are described in the point
attribute table (Table 7). The identities of the points from compilation
sources are recorded in the PTTYPE field by map label (Table 8). Map
units are described more fully in the geology pamphlet, and on Sheet 2.
Note that ARC/INFO coverages cannot contain both point and polygon
information, so only coverages with point information will have a point
attribute table, and these coverages will not have a polygon attribute
table.

**Table 7** *-- Content of the Point Attribute Tables* 

Geologic Attitudes

ITEM NAME WIDTH OUTPUT TYPE N.DEC

AREA 4 12 F 3

PERIMETER 4 12 F 3

\<cover\># 4 5 B

\<cover\>-ID 4 5 B

PTTYPE 35 35 C

DIP 3 3 I

STRIKE 3 3 I

SEL 1 1 I

SYMB 3 3 I

**Well data points**

ITEM NAME WIDTH OUTPUT TYPE N.DEC

AREA 4 3 F

PERIMETER 4 3 F

WELL_UTM# 4 5 B

WELL_UTM-ID 4 5 B

NUMB 3 3 I

WELLNUMB 3 3 I

LONG1 10 10 N 5

LAT1 10 10 N 5

WELLDEPTH 5 5 I

WELLNAME 35 35 C

QUAD1 15 15 C

**Table 8** --Point Types Recorded in the PTTYPE Field (listed by
coverage name)

**rb_stx**

\_l_lineation_i\_

air photo attitude

anticline

bedding

bedding w/tops

crumpled bedding

crumpled foliation

fault dip

fault plane

fault, ss, ll

fault, ss, rl

flat bedding

flow_2dir

flow_dir

fold axis

fold_axis

foliation

foliation and bedding

igneous foliation

inclined cleavage

joint

joint unmineralized

\_l_slick_i_r\_

lava_tube

lineation

ot bedding

ot bedding w/tops

slick

small syncline

vert bedding

vert bedding w/tops

vert foliation

vert foliation and bedding

vert joint

vertical bedding

vertical fault plane

zfold

**rb_well**

No PTTYPE Item in database, all points are well locations.

Acknowledgments

We wish to thank the digital reviewer, Scott Graham, for the digital
review of this Open File Report 00-376. 

References Cited

Fitzgibbon, T.T., 1991, ALACARTE installation and system manual (version
1.0): U.S. Geological Survey Open-File Report 91-587B.

Fitzgibbon, T.T., and Wentworth, C.M., 1991, ALACARTE user interface -
AML code and demonstration maps (version 1.0): U.S. Geological Survey
Open-File Report 91-587A.

Wentworth, C.M., and Fitzgibbon, T.T., 1991, ALACARTE user manual
(version 1.0): U.S. Geological Survey Open-File Report 91-587C.