Physics – Geophysics
Scientific paper
May 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pggp.rept..446b&link_type=abstract
In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1986 p 446-448 (SEE N87-23341 16-91)
Physics
Geophysics
Compression Loads, Lithosphere, Planetary Cores, Planetary Mantles, Tectonics, Venus (Planet), Brittleness, Deformation, Ductility, Elastic Properties, Folds (Geology), Planetary Evolution, Satellite Altimetry, Satellite Imagery, Temperature Gradients
Scientific paper
In previous studies, extensional models were used that incorporated realistic rheologies in order to constrain lithospheric structure. Lithospheric modelling is considered herein from the standpoint of compressional deformation. Features of presumed compressional tectonic origin are reviewed and a model for compressional folding based on lithospheric strength envelopes are presented that include the effects of both brittle and ductile yielding as well as finite elastic strength. Model predictions are then compared with the widths and spacings of observed tectonic features and it is concluded that the results are consistent with a thin crust overlying a relatively stronger mantle, with thermal gradients probably in the range of 10 to 15 deg/km.
Banerdt Bruce W.
Golombek Matthew P.
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