Geoscience Ontology, Geological Structure

Bedding as a fabric representing the average orientation of paleodepositional surface should be encoded through the foliationType; might apply to bedding that is layering or a foliation without layering (e.g. clast alignment in amalgamated beds).

GeoSciML v4

Term(s) specifying patterns of bedding thickness or relationships between bedding packages. (eg; thinning upward, thickening upward). A disposition.

GeoSciML v4

Term(s) specifying the style of bedding in a stratified geologic unit, e.g. lenticular, irregular, planar, vague, massive

• A sedimentary fabric characterized by disk-shaped or elongate fragments dipping in a preferred direcation at an angle to bedding.

• rdfs:source -- Neuendorf et al., 2005, p. 322.

A sedimentary fabric in which a framework of rock fragments in contact with each other forms the body of a clastic rock, typically with finer-grained matrix or cement in the intersticies between fragments

bedding in which bedding surfaces are arranged at an angle to the main (originally horizontal) stratification

fabric defined by a preferred orientation of the crystallographic axes of mineral particles in a rock.

• A pattern in a rock body. Emerges from the relation between parts (including constituents) of the rock.

• The spatial and geometric configuration of all the elements that make it up. Describes the shape and characteristics of individual parts of a rock and the manner in which the parts are distributed and oriented. In sedimentary rocks, the fabric developed depends on the depositional environment and can provide information on current directions at the time of deposition. In structural geology, fabrics may provide information on both the orientation and magnitude of the strains that have affected a particular piece of deformed rock.

Hobbs BE, Means WD, & Williams PF. (1976). An outline of structural geology. John Wiley & sons, p.73. ; Twiss RJ and Moores EM. (2007). Structural Geology, 2nd Edition, WH Freeman and Co., p.497; Wikipedia https://en.wikipedia.org/wiki/Fabric_(geology); Neuendorf et al., 2005, AGI Glossary of Geology; Sander, 1930.

• gsoc:Pattern_Feature
• gsog:Geologic_Structure

• gsos:Foliation ^c
• gsos:Lineation ^c
• gsos:Particle_Preferred_Orientation_Fabric ^c
• gsos:Sedimentary_Fabric ^c

Fabric defined by the planar arrangement of textural or structural features (fabric elements).

Jackson 1997

• A surface within a material across which there is no cohesion. (Neuendorf et al., 2005)

• Axiom for gsoc:participantIn is place holders for more specific properties in gsop and gspr. Trying to avoid imports here.

• gsoc:Low_Dimension_Feature
• gsog:Geologic_Structure

• gsoc:hostedByonly
  
• gsoc:hostedBy min 2
  
• gsoc:isParticipantInsome
  

• gsos:Fracture ^c

Nongenetic term for a penetrative linear structure.

Neuendorf et al 2005, CGI lineationtype SKOS vocabulary 2016-11-21

Fabric defined by preferred crystallographic or grain shape orientation in a rock material.

• gsos:Crystallographic_Preferred_Orientation_Fabric ^c
• gsos:Particle_Shape_Fabric ^c

Fabric defined by alignment of the dimensional axes of prolate or oblate particles in a rock. The fabric might result from primary depositional or crystallization process, or from subsequent deformation

Fabrics in sedimentary rock like "clast-supported", "matrix-supported", "cross-bedding", and "graded bed" are considered kinds of Integral Feature/GeologicStructure because they depend on the configuration of parts of a rock body. Sedimentary_Fabric is used to represent penetrative feature in a rock body; Sedimentary_Structure is used to describe discrete features in a sedimentary rock;

• gsos:Bedding ^c
• gsos:Clast_Imbrication_Fabric ^c
• gsos:Clast_Supported_Fabric ^c
• gsos:Graded_Bedding ^c
• gsos:Matrix_Supported_Fabric ^c

Structures formed in sedimentary rocks related to depositional or diagenetic processes. Includes trace fossils. Sedimentary structure is used to describe discrete features in a sedimentary rock; penetrative structures (like bedding, cross bedding) are Sedimentary_Fabrics