Mathematics – Logic
Scientific paper
Mar 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27..847m&link_type=abstract
Lunar and Planetary Science, volume 27, page 847
Mathematics
Logic
Fractures, Mechanics, Tectonics, Venus
Scientific paper
Fault structures on Venus constrain the values for the overall strength of the rock, and can be used to understand the differences in rheology between Venus and Earth. For example, the orientations of conjugate shear fractures can constrain rock internal friction in the crust of Venus [J.J. Willis, personal communication]. We have used the minimum crossing angle between overlapping systems of tensional faults to define the point where tectonism creates new features rather than reactivating old features. This in turn can be used to estimate the strength of the rock. The minimum crossing angle for such features on Venus is ~20 degrees; compared to Earth, stresses on Venus are more likely to create new fractures rather than reactivate old ones. This also implies that Venus retains more of the artifacts created by ancient regional stress states than Earth; a given region on Venus displays more information from separate geological events, and therefore provides a unique opportunity to study geological history not easily available on Earth.
Consolmagno Guy J.
Davis Donald M.
McGuire J. C.
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