Origin of mountains on Io by thrust faulting and large-scale mass movements |
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| Authors: | PM Schenk MH Bulmer |
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| Institution: | P. M. Schenk, Lunar and Planetary Institute, Houston, TX 77058, USA. M. H. Bulmer, Center for Earth and Planetary Science, National Air and Space Museum, Washington, DC 20560, USA. |
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| Abstract: | Voyager stereoimages of Euboea Montes, Io, indicate that this mountain formed when a large crustal block was uplifted 10.5 kilometers and tilted by approximately 6 degrees. Uplift triggered a massive slope failure on the northwest flank, forming one of the largest debris aprons in the solar system. This slope failure probably involved relatively unconsolidated layers totaling approximately 2 kilometers in thickness, overlying a rigid crust (or lithosphere) at least 11 kilometers thick. Mountain formation on Io may involve localized deep-rooted thrust faulting and block rotation, due to compression at depth induced during vertical recycling of Io's crust. |
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