Geologic Map of the Lake Mathews 7.5' Quadrangle, Riverside County, California

Online link https://geo-nsdi.er.usgs.gov/metadata/open-file/01-479/metadata.faq.html
Description This data set maps and describes the geology of the Lake Mathews 7.5' quadrangle, Riverside County, California. Created using Environmental Systems Research Institute's ARC/INFO software, the data base consists of the following items: (1) a map coverage
Originators Morton, Douglas M. and Weber, F. Harold, Jr.
Publication U.S. Geological Survey Open-File Report 01-479

Related topics

States or counties

Overview of attributes

Version 1.0 of the Lake Mathews 7.5' quadrangle comprises three ARC/INFO coverages, of which two contain geologic data, and one contains cartographic features:  lkm_geo (geology), lkm_str (structural data), and lkm_ano (annotation and leaders).
Geologic data represented by line entities and the polygons they delineate are contained in the coverage LKM_GEO.  For display purposes, the annotation coverage contains one annotation subclass:  anno.geo contains unit labels.
Geological point data includes site-specific information describing the types and the orientation of bedding, foliation, and lineations.  Annotation is respective dip and plunge values associated with individual point data.
>LKM_GEO.PAT:
>
>COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
>    1  AREA                   8    18     F      5
>    9  PERIMETER              8    18     F      5
>   17  LKM_GEO#               4     5     B      -
>   21  LKM_GEO-ID             4     5     B      -
>   25  LABL                  35    35     C      -
>   60  PLABL                 35    35     C      -
>   95  SHD                    3     3     I      -
>   98  SHDFIL                 3     3     I      -
>  101  NAME                 200   200     C      -
>
>LKM_GEO.AAT:
>
>COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
>    1  FNODE#                 4     5     B      -
>    5  TNODE#                 4     5     B      -
>    9  LPOLY#                 4     5     B      -
>   13  RPOLY#                 4     5     B      -
>   17  LENGTH                 8    18     F      5
>   25  LKM_GEO#               4     5     B      -
>   29  LKM_GEO-ID             4     5     B      -
>   33  LTYPE                 60    60     C      -
>   93  L-SYMB                 3     3     I      -

http://pubs.usgs.gov/of/2001/0479/pdf/README.pdf

lkm_geo.pat

Geologic units (LABL) and their corresponding names (NAME) identified in the Lake Mathews 7.5' quadrangle

Label Definition
LABL geologic map unit label, in plain text
PLABL Geological map unit label used to generate plot labels with relevant stratigraphic symbols. The geologic units with LABL designating Mesozoic (Mz) have a keystroke substitute character, }, that calls their corresponding symbols from the Geoage Font Group. Geologic map unit labels will plot on derivative map plots with appropriate stratigraphic symbols if PLABL is used as the source for unit labels.
SHD polygon color (as integer value) from shadeset alc1.shd
SHDFIL polygon fill pattern (as integer value) from shadeset geology2.shd
NAME Geologic name of map unit (see list under LABL attribute)

lkm_geo.aat

Geologic features such as contacts and faults that bound rock-unit polygons

Label Definition
LTYPE Description of types of lines on the geologic map (contact, fault).
L-SYMB stores appropriate line symbol value from the lineset geoscamp2.lin

lkm_str.pat

Geological point data includes site-specific information describing the types and the orientation of bedding, foliation, and lineations. One annotation subclass is included in the geologic points coverage, LKM_STR which displays the respective dip and plunge values associated with individual point data.

Label Definition
PTTYPE describes type of point data (bedding, horizontal bedding, foliation)
P-SYMB Coded integer value that relates point to cartographic point symbol in markerset geoscamp2.mrk
STRIKE Azimuthal strike of planar feature
DIP Dip of planar feature

lkm_ano.aat

Annotation leaders

Label Definition
L-SYMB Coded integer value (1) that relates arcs to cartographic line symbol in lineset geoscamp2.lin