First R. M. Hardy Memorial Lecture: Fracture lineament research and applications on the western Canadian plains

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Abstract
For parts of the western Canadian plains, high-altitude airphotos and satellite images frequently show a simple pattern of preferred fracture lineament orientations. Fracture lineaments are composite linear topographic, drainage, vegetation, moisture, and tonal features. A long search for their origin and repeating characteristics is described. It is held that certain elements of fracture lineament networks are selectively inherited from preexisting regional fracture systems and structures in the underlying rocks, and can therefore be correlated with subsurface geological, hydrogeological, and geophysical and near-surface geochemical data. A number of case studies illustrate how remotely sensed lineament data are applied in geological, hydrogeological, and geotechnical investigations for resource exploration, development, and management. Key words: remote sensing, fracture lineaments, propagation, hierarchy, domain, stress field, salt tectonics, data correlation, application.

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