Mathematics – Logic
Scientific paper
Apr 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984pggp.rept...93s&link_type=abstract
In NASA. Washington Rept. of Planetary Geol. Program, 1983 p 93 (SEE N84-23431 13-91)
Mathematics
Logic
Deformation, Domes (Geology), Impact Damage, Meteorite Craters, Utah, Erosion, Geological Faults, Geomorphology, Plastic Flow, Stratigraphy
Scientific paper
Reexamination of Upheaval Dome in the Canyonlands National Park, Utah, shows that the structure of this remarkable feature conforms with that expected for a deeply eroded astrobleme. The structure is definitely not compatible with an origin due simply to plastic flowage of salt and other rocks in the underlying Paradox Formation. The most strongly deformed rocks are bounded by a series of circumferential listric faults. The convergent displacement of the rocks corresponds to the deformation that results from collapse of a transient cavity produced by high speed impact. From considerations of the probable depth of exposure of the impact structure and upward extrapolation of the listric faults, the final collapsed crater is estimated to be about 8 to 10 km in diameter; the impacting body was on the order of 0.5 km in diameter.
Herkenhoff Ken E.
Shoemaker Eugene M.
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