Geologic map of the Rifle Falls quadrangle, Garfield County, Colorado

Online link https://geo-nsdi.er.usgs.gov/metadata/map-mf/2341/metadata.faq.html
Description New 1:24,000-scale geologic map of the Rifle Falls 7.5' quadrangle, in support of the USGS Western Colorado I-70 Corridor Cooperative Geologic Mapping Project, provides new interpretations of the stratigraphy, structure, and geologic hazards in the area o
Originators Scott, Robert B.; Shroba, Ralph R.; and Egger, Anne E.
Publication U.S. Geological Survey Miscellaneous Field Studies Map MF-2341

Related topics

States or counties

Overview of attributes

The data are supplied in ARC/INFO export format.
DATABASE FILES - ARC/INFO
The database of the map consists of four coverages (root name = riflef), including corresponding INFO files:
riflefpoly coverage:  Contains all contact lines and labelpoints for each polygon. In the coverage's riflefpoly.aat INFO file the CODE item provides a numeric code that specifies the geologic identity and positional quality of each contact line (e.g., fault, approximately located), and the P1 and P2 items are relic cartographic parameters from the GSMCAD compilation program. The riflefpoly.aat CODE values are defined below. In the riflefpoly.pat INFO file the CODE and P2 items are relic cartographic parameters from the GSMCAD program, the P1 item provides a numeric code that specifies the polygon's map unit identity, the TEXT item indicates the map unit label for each polygon, and the SYMBOL item defines the polygon color as chosen from the color524.shd shadeset (included in bundled file archive). The P1 item defines the category of polygon as listed below and in the riflefunit.lut INFO file. The riflefpoly.pat P1 and TEXT items are listed below.
riflefline coverage:  Contains faults, fold axes, and other non-contact lines.  Faults that are contacts also appear in the riflefpoly coverage. In the riflefline.aat INFO file the CODE item provides a numeric code that specifies the geologic identity and positional quality for each type of line, the P1 and P2 items are relic cartographic parameters from the GSMCAD program, and the TEXT item describes the geologic identity, positional quality, and, in some cases, additional aspects of each line. The riflefline.aat CODE and TEXT items are listed below.
riflefpoint coverage:  Contains points recording site-specific observations and measurements, such as strike and dip of bedding. In the riflefpoint.pat INFO file the CODE item provides a numeric code that specifies the type of point observation, the P1 and P2 items indicate the associated strike azimuth (or trend) and dip (or plunge), respectively, and the TEXT item describes the type of point observation. (In the case of bedding attiudes the P1 strike azimuths are always 90 deg. counterclockwise from the associated dip directions.)  The riflefpoint.pat CODE and TEXT items are listed below.
riflefdec coverage: Contains points used for cartographically decorating lines, such as "ball-and-bar" fault symbols, as well as a repeat of points in the riflefpoint coverage recording site-specific observations and measurements.  Such point data provide additional qualitative information mainly for line features representing faults and folds, such as sense of fault displacement or fold type.  In the INFO file riflefdec.pat the CODE item defines a numeric code for each type of point decoration and the P1 and P2 items indicate the orientation (or strike azimuth) and, where appropriate, dip (or plunge) value associated with each point symbol. The riflefdec.pat CODE items are listed below.
Auxiliary files:
color524.shd:  This shadeset file defines the rgb values of colors assigned to polygons in the riflefpoly coverage (see SYMBOL item).
riflef24k.pdf:  A file for viewing and printing a graphics version of the map and accessory elements using Adobe Acrobat viewing software (version 4.0).  Accessory map elements displayed in this graphics file are: (1) geologic cross section A-A', (2) geologic cross section B-B', (3) geologic cross section C-C', (4) correlation of map units diagram, (5) list of map unit symbols and names, and (6) explanation of map symbols.
riflefexpl.pdf:  A detailed text description of geologic map units and a brief discussion of deposits, structure, and geologic history of the map area.
rifleftext coverage: Contains text points that define the position, rotation, and size of text to appear on the face of the map.  Also includes arcs that draw leaders from the text to the appropriate polygons.  This coverage is for cartographic purposes and does not include data critical to the database information.  The P1 item defines rotation of the text, the P2 item the size of text, and the TEXT item the actual text.
Gsmrelate INFO file:  Contains the information that relates the riflefcode.lut and riflefunit.lut to the pat and aat INFO files of the coverages.
riflefunit.lut INFO file:  Contains the first two columns of the table below that lists the number (P1 item) assigned to each category of polygon and the corresponding text symbol used in the map explanation and on the face of the map.
riflefcode.lut INFO file:  Contains a text definition of the meaning of the number stored in the CODE item of every entity in all the coverages.
riflefcolor.lu INFO file:  Assigns a color from shadeset 524 for each category of polygon according to the P1 item.
Gsmdraw.aml and gsmdraw.mnu files are included to constitute an ARC/INFO macro language program that will extract information from the riflef coverages to produce a graphics (.gra) file depicting the riflef geologic map.  The graphics file can be viewed on screen or plotted with appropriate equipment.
The aml program calls shadeset 524.shd, font font003, and lineset alcwrg.lin, so these are also included in the archive file.  Other files can be substituted, but special geologic characters may not plot properly with a different font.
Database root name: riflef
>P1  | GEOLOGIC MAP UNIT LABELS
>100 | af
>124 | Qac
>126 | Qfy
>127 | Qlo/Qfo
>131 | Qlo/Qp
>134 | QTg
>136 | Qc
>138 | Qsw
>141 | Qfp
>142 | Qls
>154 | Qd
>155 | Qg
>167 | Qlo/Qg
>169 | Qcm
>171 | shear zone
>180 | Qlo
>184 | Qtu
>413 | Kicc
>432 | Kmu
>437 | Kmn
>444 | Kml
>458 | Kd
>466 | Jm
>469 | Jeg
>472 | Je
>486 | @c
>498 | @Ps
>550 | &ee
>564 | Ml
>566 | Dc
>567 | Ddc
>569 | Ddb
>582 | P&ml
>584 | Pms
>612 | &b
>684 | Water
>685 | O\u
>686 | &ev
>687 | &evl
>689 | Dp
>Note: @ = Triassic; & = Pennsylvanian; \ = Cambrian
DEFINITION OF CODES IN THE DATABASE COVERAGES (CODES AND TEXT LISTED IN THE .AAT AND .PAT FILES)
>CODE |   FEATURE
>001  | contact; certain
>003  | contact; inferred
>008  | landslide; scarp; contact
>009  | landslide on fault; contact certain
>010  | fault; contact; certain
>011  | fault; contact; concealed
>014  | fault; contact; inferred
>032  | fault; strike slip; concealed
>034  | fault contact; strike slip; inferred
>040  | thrust fault contact; certain
>041  | thrust fault; concealed
>044  | thrust fault contact; approximate location
>070  | fold axis; anticline; certain
>071  | fold axis; anticline; concealed
>074  | fold axis; syncline; certain
>075  | fold axis; syncline; concealed
>078  | line of section
>088  | intrusive dike; contact; certain
>089  |  'intrusive dike; contact; concealed
>093  | water boundary, certain
>097  | scratch boundary
>099  | map boundary
>201  | bedding attitude symbol
>203  | fault dip symbol
>204  | anticline symbol
>205  | syncline symbol
>206  | adit symbol
>207  | ball & bar symbol
>209  | left lateral symbol
>219  | over turned bed symbol
>242  | Question mark symbol to indicate uncertainty in a reach of a linear feature
>268  | diamond arrow symbol
>300  | Plots the symbol number read from P2
>362  | Flat bedding symbol
>500  | Unit labels text & tag
>501  | Hidden unit tags
>502  | Ordinary text
>503  | Ordinary text
>700  | Splined text

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