Physiographic constraints on the origin of lunar wrinkle ridges

Details Physiographic constraints on the origin of lunar wrinkle ridges Physiographic constraints on the origin of lunar wrinkle ridges

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pggp.rept..461g&link_type=abstract

In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1986 p 461-463 (SEE N87-23341 16-91)

Mathematics

Logic

Constraints, Geomorphology, Landforms, Lunar Surface, Topography, Wrinkling, Geological Faults, Lava, Lunar Maria, Mars (Planet), Mercury (Planet), Tectonics, Viscosity, Volcanoes

Scientific paper

Wrinkle ridges are linear asymmetric topographic highs with considerable morphologic complexity that are commonly found on the lunar maria and the smooth plains of Mars and Mercury. The origin of planetary wrinkle ridges has been a much argued and debated topic. Early ideas suggested that wrinkle ridges resulted from volcanic intrusion and extrusion of high viscosity lavas; these early ideas were countered with suggestions that wrinkle ridges formed from tectonic processes involving folding and faulting. Combined volcanic and tectonic mechanisms have also been suggested. The identification and analysis of a number of morphologically similar structures on the earth has helped in the recent interpretation of wrinkle ridges as thrust faults that deform surface rocks. Nevertheless, there remains the uncertainty of the dominant role of thrusting versus folding in the formation of planetary wrinkle ridges. Presented is a detailed physiographic analysis of lunar wrinkle ridges in an effort to help distinguish the dominant deformation mechanism. Results agree with the findings of the earth analog study and support the hypothesis that wrinkle ridges form from thrust faults that deform surface rocks.

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