NMBGMR Draft Geologic Data Model - v. 1.0.3
POINTS: Planar & Linear Fabrics

revised: 29-Feb-2012

Feature Class: Fabric_point

This feature class represents points of measured planar and/or linear geologic fabrics, such as attitudes of sedimentary bedding or foliations, but excludes fault plane / joint data and fold data (which are treated separately). Foliation measurements taken within discrete shear zones with good shear criteria should be recorded in Fault_point.

Field Name Field Alias Length
(text fields)		 Field Type Field Value Default Allow Nulls? Attributes / Examples Description / Notes
FGDC_plane " 16 String variable [null] TRUE 30.3.12 FGDC geologic symbol reference number.
StationID " 50 String variable [null]

TRUE

 [null], to link to notes, photos, etc. Station ID (if specified)
RockType " 16 String CVD [null] TRUE sedimentary, volcanic, intrusive, metamorphic, unknown
see: RockType		 Rock type: sedimentary, volcanic, magmatic foliation, or metamorphic foliation determines symbol set
PlaneType " 25 String CVDe [null] TRUE see: FabricPlaneType Type of planar fabric.
PlnSubType PlaneSubType 25 String CVD [null] TRUE contact, S0, S1, S2, etc.
see: FabricPlaneSubType		 Sub-type of planar fabric of specified type.
Inclnation Inclination 16 String CVD [null] TRUE unspecified, inclined, vertical, horizontal, overturned Description of inclination; used to determine symbol type.
Surface " 50 String variable [null] TRUE unspecified, mudcracks, ripple marks, salt casts, trace fossils, geologic contact, etc. surface or plane properties
PlaneAsymm " 16 String variable [null] TRUE unspecified, fining-up, fining-down, sinsistral, dextral, S, Z, M, etc Asymmetry of planar fabric.
Strike "   Short integer Integer Range Domain: 0-359 [null] TRUE [null], 256, 123, etc.
(0-360)		 Azimuth of strike (right hand rule).
DipDir DipDirection   Short integer Integer Range Domain: 0-359 [null] TRUE [null], 166, 123, etc.
(0-360)		 Azimuth of dip-direction.
Dip "   Short integer Integer Range Domain: 0-90 [null] TRUE [null], 45, 56, etc, (0-90) Value of dip.
Younging " 16 String CVD [null] TRUE upright, overturned, etc.
see: Younging		 Determination of younging "vector'.
YoungCrit YoungingCriteria 16 String CVD [null] TRUE see: YoungingCriteria Younging criteria used.
FGDC_line " 16 String CVD [null] TRUE 30.3.12
see: FGDC_FabricLinear		 FGDC geologic symbol reference number.
LineType " 25 String CVD [null] TRUE [extension] lineation, paleocurrent, etc.
see: FabricLineType		 Type of linear fabric.
LnSubType LineSubType 25 String CVD [null] TRUE L1, L2, L0-1 , L1-2 , imbrication, channel axis, etc.
see: FabricLineSubType 		Subtype of linear fabric for specifed type.
Trend "   Short integer Integer Range Domain: 0-359 [null] TRUE [null], 166; (0-360) Azimuth of Trend.
Plunge "   Short integer Integer Range Domain: 0-90 [null] TRUE [null], 45 Value of plunge.
Rake "   Short integer Integer Range Domain: 0-180 [null] TRUE [null], 45 Value of rake measured from strike azimuth.
Magnitude "   Single variable [null] TRUE [null], 5 Magnitude of any vector data like # of paleocurrent measurements
LineAsymm LineAsymmetry 16 String CVD [null] TRUE see: LineAsymmetry Asymmetry of linear fabric; e.g. for Paleocurrents or dominant ductile shear sense.
SubLnAsym SubLineAsymmetry 16 String CVD [null] TRUE see: SubLineAsymmetry Subtype of linear fabric asymetry; e.g. tilt correction or subordinate shear sense.
AsymmCrit AsymmetryCriteria 50 String CVD [null] TRUE [sigma] porphyroclast, [delta] porphyroclast, etc.
see: AsymmetryCriteria		 Critera for planar asymmetry.
MeasMethod MeasurementMethod 50 String CVD [null] TRUE see: MeasurementMethod Method of measurement.
LocAccType LocAccuracyType 50 String variable [null] TRUE precision gps, handheld gps, good topo, poor topo, planimetric, survey, map and compass, triangulation, distinctive feature Accuracy of position.
LocAccMeas LocAccuracyMeasure 16 String variable [null] TRUE EPE(m), PDOP Criteria for deterimining accuracy of position.
LocAccVal LocAccuracyValue   Single variable [null] TRUE 15 Numeric measurement of locataion accuracy.
DsplyScale DisplayScale   Long Integer CVD 24000 TRUE see: DisplayScale Denominator of display scale: display feature at scales larger than number specified (=< denominator). Zero indicates data that should never be displayed.
SourceID " 128 String variable [null] TRUE unknown; unspecified; Smith, 2006b [variable] Feature level metadata (who mapped this); related to bibliographic detail.
Comments " 255 String variable [null] TRUE description Comments about this particular feature.