Government of Canada: Natural Resources Canada
 
 
Geological Survey of Canada
Calgary

 

 

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DXF Metadata

The Central Foreland NATMAP Project

METADATA - E00 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 srp94g5
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: 94G/5

TABLE stp94g5
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
geologist      Observing geologist
nts_map       National Topographic System designator. Example: 94G/5

TABLE fop94g5
Purpose:      contains the attributes of points representing fossils
Columns: 
station_id     A unique identification of each outcrop where fossils were
                   collected
sample         Sample number of fossil
curation        Curation number of fossil
easting         UTM NAD83 easting coordinate value of station
northing        UTM NAD83 northing coordinate value of station
elevation       Elevation of the station in feet above Mean Sea Level
report           Paleo Report number                                                               year             Year fossil was collected                                                  purpose        Purpose of fossil                                                               nts_map       National Topographic System designator. Example: 94G/5

 

TABLE sap94g5

Purpose:      contains the attributes of points representing samples

Columns:

station_id     A unique identification of each outcrop where samples were        

                   collected

sample         Sample number

easting         UTM NAD83 easting coordinate value of station

northing        UTM NAD83 northing coordinate value of station
curation        Curation number of sample

lithology        Lithology from which the sample was collected

purpose        Reason for collecting the sample

nts_map       National Topographic System designator. Example: 94G/5

USER-DEFINED ATTRIBUTES - LINE FEATURES:

TABLE gel94g5
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: 94G/5

Some formations are locally represented by lines rather than polygons, where their thicknesses are less than the 1:50 000 map resolution.

TABLE unl94g5
Purpose:      contains the attributes of lines 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: 94G/5 chron_age    Sequential numbering of units from youngest to oldest for this
                   map area

USER-DEFINED ATTRIBUTES - POLYGON FEATURES:

TABLE una94g5
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: 94G/5 chron_age     Sequential numbering of units from youngest to oldest for this
                    map area