[auscope-geosciml] SeparationValue [SEC=UNCLASSIFIED]

[Oliver.Raymond at ga.gov.au]

Hi Bruce

Just cleaning up the last little bits on the model so we can generate a new set of schemas.  I noticed this outstanding GeoSciML Trac job (#2) of yours....

For ShearDisplacementStructures?<https://projects.arcs.org.au/trac/geosciml/wiki/ShearDisplacementStructures> the UML has: SeparationValue:separation = reported apparent offset of planar feature, report as vector.

However separation in the Geology Glossary (Bates & Jackson) has:
"The distance between any two parts of an index plane disrupted by a fault (also horizontal separation; vertical separation; vertical separation)". This is not really a CGI_Vector datatype, but a magnitude with (apparent) separation type.

I suggest for GeoSciML version RC3.0 we replace the SeparationValue:separation property with SeparationValue:magnitude (data type CGI_NumericRange) and add a property SeparationValue:separationType with a data type SeparationTypeCode?<https://projects.arcs.org.au/trac/geosciml/wiki/SeparationTypeCode> with a CodeList?<https://projects.arcs.org.au/trac/geosciml/wiki/CodeList> of:
'horizontal separation',
'dextral horizontal separation',
'sinistral horizontal separation',
'vertical separation'
'reverse separation',
'normal separation',
'stratigraphic separation'
No problems to change the CGI_Vector to a magnitude.

Question:  Is the MovementSense attribute on the parent DisplacementValue class not already sufficient to describe your proposed SeparationType?
[cid:image001.jpg at 01CC170C.E2075700]

Cheers,
Ollie


_______________________________________________________________________

Ollie Raymond

Project Leader
National Geological Maps and Data Standards Project<http://www.ga.gov.au/minerals/projects/current-projects/geological-maps-standards.html>
Geoscience Australia

Interoperability Working Group<https://www.seegrid.csiro.au/wiki/bin/view/CGIModel/InteroperabilityWG>
IUGS Commission for the Management and Application of Geoscience Information

Address: GPO Box 378, Canberra, ACT, 2601, Australia | ABN: 80 091 799 039
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