NMBGMR Draft Geologic Data Model - v. 1.0.3
SYMBOLOGY: Metamorphic Point Features

revised: 29-Feb-2012

This document indicates how metamorphic fabrics recorded at a point and portrayed on a geologic map should be coded in the data model. See the NMBGMR Symbol set (3.7 Mb PDF) for details on how our standard symbology is constructed.

Description Symbol Feature Classes & Attributes Comment
S1-horizontal map symbol Fabric_point
  • RockType="metamorphic"
  • PlaneType="foliation"
  • PlnSubType="S1"
  • Inclnation="horizontal"
  
S1-inclined map symbol Fabric_point
  • RockType="metamorphic"
  • PlaneType="foliation"
  • PlnSubType="S1"
  • Inclnation="inclined"
  • PlaneAsymm="sinistral"
  • DipDir="325"
  • Dip="40"
  • LineType="extension lineation"
  • LnSubType="L1"
  • Trend="280"
  • Plunge="20"
 [linear data is gray here for emphasis of planar data]. Barbs indicate horizontal component of shear is sinistral.
S2-inclined map symbol Fabric_point
  • RockType="metamorphic"
  • PlaneType="foliation"
  • PlnSubType="S2"
  • Inclnation="inclined"
  • DipDir="308"
  • Dip="75"
  • LineType="extension lineation"
  • LnSubType="L2"
  • Trend="280"
  • Plunge="20"
 [linear data is gray here for emphasis of planar data].
S3-inclined map symbol Fabric_point
  • RockType="metamorphic"
  • PlaneType="foliation"
  • PlnSubType="S3"
  • Inclnation="inclined"
  • DipDir="302"
  • Dip="65"
  • LineType="extension lineation"
  • LnSubType="L3"
  • Trend="280"
  • Plunge="20"
 [linear data is gray here for emphasis of planar data].
shearzone-inclined map symbol Fault_point
  • StructClass="shear zone "
  • SlipSense="unknown"
  • Inclnation="inclined"
  • DipDir="110"
  • Dip="65"