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METADATA - SHAPE FILES
PROCESS DESCRIPTION:
Geological features were digitized in MicroStation/J, exported as DXF
and imported to ArcInfo 8.2. User-defined attributes were added to
complete the tables as described below.
ARCINFO GENERATED COLUMNS:
AREA area of polygon
PERIMETER perimeter of polygon
FNODE# Internal sequence number of the from-node
TNODE# Internal sequence number of the to-node
LPOLY# Internal sequence number of the left polygon
RPOLY# Internal sequence number of the right polygon
LENGTH Length in coverage units
COVER1# Internal sequence number (i.e., the record number) of the arc
in the ARC file
COVER-ID User-assigned feature ID
USER-DEFINED ATTRIBUTES - POINT FEATURES:
TABLE srp95c7
Purpose: contains the attributes of points representing orientation
measurements
Columns:
planar_id A unique identification for each planar measurement
planar_typ The type of planar feature. Examples: bedding, cleavage
modifier Description of the feature type. Examples: overturned,
irregular
strike Strike (according to the Right-Hand Rule)
dip Dip
location Distance/direction from the station if measured between
stations or away from the station
trend Trend of linear feature (value of 999 if no measurement
available)
plunge Plunge of linear feature (value of 999 if no measurement
available)
linear_typ The type of linear feature. Examples: ripple crests,
fold axis
comment Notes relating to measurement
station_id A unique identification of the outcrop where the
measurements were taken
disp_ang Achieves Right-Hand Rule orientation of symbols in
ArcView. Derived using the formula (270-strike)
nts_map National Topographic System designator. Example: 95C/7
TABLE stp95c7
Purpose: contains the attributes of points representing outcrops
Columns:
station_id A unique identification of each outcrop where
observations were made
easting UTM NAD83 easting coordinate value of the station
northing UTM NAD83 northing coordinate value of the station
elevation Elevation of the station in feet above Mean Sea Level
unit The predominant geological unit at the outcrop
dom_lithol The dominant lithologies at the outcrop
contacts A list of units in contact with the predominant unit
sta_signif The significance of the station
geologist Observing geologist
nts_map National Topographic System designator. Example: 95C/7
USER-DEFINED ATTRIBUTES - LINE FEATURES:
TABLE gel95c7
Purpose: contains the attributes of geology lines
Columns:
type The type of feature. Examples: fault, contact
subtype Subdivision of the feature type. Examples: normal,
approximate
direction Directional information pertaining to asymmetric
features. Example: dip direction of a fault
nts_map National Topographic System designator. Example: 95C/7
USER-DEFINED ATTRIBUTES - POLYGON FEATURES:
TABLE una95c7
Purpose: contains the attributes of polygons representing
geological
units
Columns:
label Hardcopy map unit labels
group Group
name
formation Unit name
member Member name
gen_descr Unit description
nts_map National Topographic System designator. Example: 95C/7
chron_age Sequential numbering of units from youngest to oldest
for this map area
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