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  <IfcVersion version="IFC4X4" />
  <Name>Pset_GeoObsLineation</Name>
  <Definition>Properties for geological lineation observations.</Definition>
  <Applicability />
  <ApplicableClasses>
    <ClassName>IfcGeoScienceObservation/MAPPEDFEATURE</ClassName>
  </ApplicableClasses>
  <ApplicableTypeValue>IfcGeoScienceObservation/MAPPEDFEATURE</ApplicableTypeValue>
  <PropertyDefs>
    <PropertyDef ifdguid="430d27c3107048a0b0b376fca2e042ce">
      <Name>LineationType</Name>
      <Definition>Flow lines, scratches, striae, slickenlines, linear arrangements of elongate components in sediments, elongate minerals, crinkles, and lines of intersection between penetrative planar structures.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcLabel" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases />
      <DefinitionAliases />
    </PropertyDef>
    <PropertyDef ifdguid="a3c1ef6c09504f669818e249c7c143d8">
      <Name>DefiningElement</Name>
      <Definition>Kinds of describable inhomogeneity in a rock body that may define a geologic structure. Examples include oriented particle.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcLabel" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases />
      <DefinitionAliases />
    </PropertyDef>
    <PropertyDef ifdguid="4780ea795035493abe486e7c45294fa6">
      <Name>DipDirection</Name>
      <Definition>The geographic direction of a line created by the intersection of a plane and the horizontal plane. If non specific convention is used, this angular value is in the range 0 to 180 degrees. In this case, there is an ambiguity on the dip orientation. For example, a plane with an orientation of 90 degrees from the north could either have a dip direction to the North or to the South. Thus, to avoid this ambiguity, a strike value is generally completed with an indication of the dip orientation (Quadrant).</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcPlaneAngleMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases />
      <DefinitionAliases />
    </PropertyDef>
    <PropertyDef ifdguid="2d2973b6d12b4d088d06cb09b5929995">
      <Name>Plunge</Name>
      <Definition>The angle of inclination of the fold axis with the horizontal as measured in a vertical plane.</Definition>
      <PropertyType>
        <TypePropertyBoundedValue>
          <DataType type="IfcPlaneAngleMeasure" />
        </TypePropertyBoundedValue>
      </PropertyType>
      <NameAliases />
      <DefinitionAliases />
    </PropertyDef>
    <PropertyDef ifdguid="c4e4845fbc7345febb6f80f81a369b94">
      <Name>DeformationPhase</Name>
      <Definition>Name or label for a geologic event such as a basin formation, compressional tectonic phase, orogeny etc.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcLabel" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases />
      <DefinitionAliases />
    </PropertyDef>
  </PropertyDefs>
  <PsetDefinitionAliases />
</PropertySetDef>