1. Leverage and Delegation in Developing an Information Model for Geology Simon Cox Research Scientist 14 December 2007

2. CSIRO AGU Fall 2007 – IN52A-05 Cox Outline GeoSciML scope, its community of interest Methodology & platform: geospatial standards Delegation within GeoSciML Extensions from GeoScML Conclusions

3. CSIRO AGU Fall 2007 – IN52A-05 Cox GeoSciML A language for exchange of geoscience information UML logical model XML document format Scope: interpreted and observed goelogy MappedFeature, GeologicUnit, GeologicStructure, Fossil, Geologic timescale, Borehole, Observation, etc i.e. information required to maintain geologic maps More detail: see poster IN53A-0949

4. CSIRO AGU Fall 2007 – IN52A-05 Cox E.g. GeologicUnit

5. CSIRO AGU Fall 2007 – IN52A-05 Cox E.g. Borehole More detail: The GeoSciML Logical Model - IN53A-0949 (poster)

6. CSIRO AGU Fall 2007 – IN52A-05 Cox Immediate governance arrangements IUGS Commission for Geoscience Information Active participants: GSC, USGS, BGS, BRGM, SGU, GA, GSV, GSJ, APAT + CSIRO Documentation + discussion: https://www.seegrid.csiro.au/twiki/bin/view/CGIModel/GeoSciML Model and schema: https://www.seegrid.csiro.au/subversion/GeoSciML/

7. CSIRO AGU Fall 2007 – IN52A-05 Cox Framework Geoscience is largely geospatial → Use geospatial information standards for basic framework ISO 19100 standards UML for model design Standard treatments for geometry, time, fields, coordinate systems Meta-model for “features” XML encoding rule – “Geography Markup Language” OGC information and service models Standard treatment for Observations & Measurements Standard http interfaces – WMS, WFS, SOS

8. CSIRO AGU Fall 2007 – IN52A-05 Cox E.g. MappedFeature ISO 19109 Feature Model ISO 19107 Geometry ISO 19115 Metadata OGC 07-002 Sampling Model

9. CSIRO AGU Fall 2007 – IN52A-05 Cox Internal delegation GeoSciML provides data structure E.g. LithostratigraphicUnit is a kind of GeologicFeature with the properties “preferredAge”, “classifier”, “beddingPattern” etc Property values are scoped to an explicit scale i.e. timescale, stratigraphic index, units of measure may use a localized scale or dictionary

10. CSIRO AGU Fall 2007 – IN52A-05 Cox E.g. localized vocabularies within standard structures Castlemaine Group - Lancefieldian Ocl published description instance Formation...

11. CSIRO AGU Fall 2007 – IN52A-05 Cox Extensibility Related communities are already building specializations on top of GeoSciML GroundWaterML – see IN53C-03 “Aquifer” specializes GeologicUnit GeochronML – see IN53C-02 Specialized specimens and observation-procedures

12. CSIRO AGU Fall 2007 – IN52A-05 Cox Extensibility methodology Same pattern as GeoSciML’s specialization of ISO & O&M …

13. CSIRO AGU Fall 2007 – IN52A-05 Cox Key points GeoSciML both uses, and contributes to, a distributed governance framework for geoscience information UML/XML framework allows delegated governance UML packages (XML namespaces) reflect system boundaries  discrete governance arrangements Markup conventions support late-binding of selected elements (esp. vocabularies and scales) Understand the scope and reach of your community Only maintain the elements that are: a.important to you b.not governed by someone else Enable extensions to your model Publish re-usable components in http repository e.g. XMI of UML model; XML Schema Maintain your components in an orderly way Don’t cause surprises!

14. Contact Us Phone: 1300 363 400 or +61 3 9545 2176 Email: enquiries@csiro.au Web: www.csiro.au Thank you Exploration & Mining Simon Cox Research Scientist Phone: 08 6436 8639 Email: Simon.Cox@csiro.au Web: www.seegrid.csiro.au