A THREE-DIMENSIONAL GEOLOGICAL MODEL OF CANADA, RUMINATIONS ON THE NEEDS, CHALLENGES AND PRACTICALITIES
This submission reviews challenges present in the development of a 3-D model for the full landmass of Canada, including: a hierarchical approach to the parsing and codification of the diverse geology of Canada, data sources (geophysical, lithological, structural, stratigraphic, geochemical, etc.) and formats (e.g. point, line, polygon, continuous), and the need for a coordinated data management scheme. It also considers differences in modelling approaches required for a variety of geological terrains (e.g. sedimentary basins, metamorphic and plutonic, orogenic belts, surficial sediment) with varying types and abundance of data support. Surface mapping of Canada has advanced in an iterative fashion as regional compilations are upgraded upon the completion of detailed studies, and a similar iterative process is required for 3-D modelling. Three-dimensional modelling is already under way in numerous jurisdictions, where older stratigraphic databases, structural maps, etc. are captured and regenerated using machine based interpolative algorithims and 3-D visualization systems. There is a need for a broader collaboration and dialogue to optimize scarce human resource expertise and funding support to ensure continued advancement. There is no single data set, nor interpretative and interpolative approach, to 3-D model development, and broad discussion and collaboration is the surest way to make progress.