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      -

A complete description of the polygon, line, and point data coding schemes is available in U.S. Geological Survey Open-File Reports 97-859, OFR 97-860, and OFR 97-861 (full source citations follow): Matti, J.C., Miller, F.K., Powell, R.E., Kennedy, S.A., Bunyapanasarn, T.P., Koukladas, Catherine, Hauser, R.M., and Cossette, P.M., 1997b, Geologic-point attributes for digital geologic-map databases produced by the Southern California Areal Mapping Project (SCAMP), Version 1.0: U.S.Geological Survey Open-File Report 97-859 Matti, J.C., Miller, F.K., Powell, R.E., Kennedy, S.A., and Cossette, P.M., 1997c, Geologic-polygon attributes for digital geologic-map databases produced by the Southern California Areal Mapping Project (SCAMP), Version 1.0: U.S.Geological Survey Open-File Report 97-860 Matti, J.C., Powell, R.E., Miller, F.K., Kennedy, S.A., Ruppert, K.R., Morton, G.L., and Cossette, P.M., 1997a, Geologic-line attributes for digital geologic-map databases produced by the Southern California Areal Mapping Project (SCAMP), Version 1.0: U.S.Geological Survey Open-File Report 97-861