Digital Geologic Map of the Butler Peak 7.5' Quadrangle, San Bernardino County, California

Version 1.0 of the Digital Geologic Map of the Butler Peak 7.5'quadrangle consists of three Arc/Info coverages:
1) btlrpk_geo - geology
Geologic units are delineated by geologic line entities and described by polygons which are attributed with the following set of attribute items in btlrpk_geo.pat. For display purposes, the geology coverage contains one annotation subclass: anno.geo contains unit labels.

BTLRPK_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  BTLRPK_GEO#            4     5     B      -
   21  BTLRPK_GEO-ID          4     5     B      -
   25  TAG                   25    25     C      -
   50  LABL                  35    35     C      -
   85  PLABL                 35    35     C      -
  120  SHD                    3     3     I      -
  123  SHDFIL                 3     3     I      -
  126  SHDPS                  3     3     I      -
  129  NAME                 200   200     C      -

TAG enables identification of polygons, within a unit, of which the geology is sufficiently distinct from that of the overall unit. The default designation is the unit label with the suffix A. Polygons representing unique properties other than the default can be identified with suffixes B, C...etc. All polygons in the Butler Peak quadrangle are designated by the suffix A.
LABL geologic map unit label, in plain text
PLABL coded geologic map unit label used to generate plot labels with relevant stratigraphic symbols. The geologic units with LABL Cbk, Cc, Cw, Cz (Cambrian); Mzu (Mesozoic); PPbs (Pensylvanian); Prcc, Prgsq etc. (Proterozoic); Trf, Trfl, Trlm (Triassic) appear as _bk, _c, _w, _z; }u; &bs; <cc, <gsq etc.; ^f, ^fl, ^lm respectively in the item PLABL. The replacement characters call their corresponding symbols from the Stratagem Font Group. Geologic map unit labels will plot on derivative map plots with appropriate stratigraphic symbols if PLABL is used as the source of unit labels. The Stratagem Font Group is accessed through geofont.txt. However, the Stratagem Font Group is unavailable for general release at this time.
SHD allows assignment of polygon colors from shadesets other than those used in this dataset
SHDFIL polygon fill pattern from shadeset geology2.shd (included in the data package)
SHDPS polygon color from shadeset scamp2.shd (included in the data package)
NAME geologic name of each unit
Geologic lines, which include features such as faults, and contacts are attributed with the following set of feature attribute items contained in btlrpk_geo.aat. (A complete description of each line type is available in the data table, lines.rel.)

BTLRPK_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  BTLRPK_GEO #           4     5     B      -
   29  BTLRPK_GEO -ID         4     5     B      -
   33  L-SYMB                 3     3     I      -
   36  L-TAG                 25    25     C      -

L-SYMB stores appropriate line symbol value from the lineset geoscamp2.lin (included in the data package)

L-TAG line attribute which consists of a character and numerical value, e.g. C17, allows the user to relate the line entity to its corresponding definition in lines.rel

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

BTLRPK_PTS.PAT:

COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
    1  AREA                   8    18     F      5
    9  PERIMETER              8    18     F      5
   17  BTLRPK_PTS#            4     5     B      -
   21  BTLRPK_PTS-ID          4     5     B      -
   25  P-DIP                  3     3     I      -
   28  P-STRIKE               3     3     I      -
   31  P-SYMB                 3     3     I      -
   34  P-TAG                 25    25     C      -
   59  P-UNIQUE             200   200     C      -
  259  P-AGECON              50    50     C      -
  309  P-SOURCE             200   200     C      -
  509  P-AGE                100   100     C      -
  609  P-PLUNGE               3     3     I      -
  612  P-DIPDIR               3     3     I      -

P-DIP the dip of planar features
P-STRIKE the azimuth strike of planar features
P-SYMB stores the point-type value from the markerset geoscamp2.mrk (included in the data package)
P-TAG point attribute which consists of a character(s) and numerical value, e.g. FN42, allows the user to relate the point entity to its corresponding definition in the data table, points.rel
P-UNIQUE allows for the description of attributes uniquely associated with a particular point datum location
P-AGECON indicates the confidence with which a geologic age is assigned to a point feature
P-SOURCE allows identification of sources other than the U.S. Geological Survey authors of this map product from which data were compiled
P-AGE indicates the geologic age assigned to the feature, where determined
P-PLUNGE lineation plunge value
P-DIPDIR azimuthal direction of dip
To date, there is no other way to indicate to the user the cardinal direction of dip using the traditional convention (traditional geologic notation allows a quadrant designation following the dip value).
3) btlrpk_ldr - annotation leaders
Annotation leaders point to unit labels that are placed outside the perimeter of a particular geologic polygon. These cartographic line entities are attributed with only a single attribute, L-SYMB, and all have the same value, 1.

BTLRPK_LDR.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  BTLRPK_LDR#            4     5     B      -
   29  BTLRPK_LDR-ID          4     5     B      -
   33  L-SYMB                 3     3     I      -