Mathematics – Logic
Scientific paper
Aug 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.4547m&link_type=abstract
Journal of Geophysical Research, vol. 84, Aug. 10, 1979, p.4547-4563.
Mathematics
Logic
16
Aerial Photography, Canyons, Earth Crust, Geological Faults, Rocks, Surface Geometry, Colorado River (North America), Parks, Photomapping, Utah
Scientific paper
Results are reported for three years of field and analytical study of a system of young and very well exposed grabens in southeastern Utah. A kinematic and mechanical model is developed for these specific grabens with the hope that this will aid in interpreting graben systems elsewhere on the earth and other planets. Because studies on other planets must be based entirely on photo analysis, an attempt is made to determine to what extent three-dimensional geometry could be inferred from photographs alone. An equation based on the model of graben geometry and kinematics relates thickness of faulted plates to graben parameters measurable on photographs. The initial width of a nascent graben is a simple function of the dip of the faults bounding the graben and of the thickness of the faulted brittle plate. The uniform spacing of the grabens is a natural result of the geometry of the system.
McGill George E.
Stromquist Albert W.
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