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Topography of lobate scarps on Mercury: New constraints on the planet's contraction

1998; Geological Society of America; Volume: 26; Issue: 11 Linguagem: Inglês

10.1130/0091-7613(1998)026 2.3.co;2

1943-2682

T. R. Watters, M. S. Robinson, Anthony Cook,

Astro and Planetary Science

Research Article| November 01, 1998 Topography of lobate scarps on Mercury: New constraints on the planet's contraction Thomas R. Watters; Thomas R. Watters 1Center for Earth and Planetary Studies, National Air and Space Museum, Smithsonian Institution, Washington, D.C. 20560 Search for other works by this author on: GSW Google Scholar Mark S. Robinson; Mark S. Robinson 2Department of Geological Sciences, Northwestern University, Evanston, Illinois 60208 Search for other works by this author on: GSW Google Scholar Anthony C. Cook Anthony C. Cook 1Center for Earth and Planetary Studies, National Air and Space Museum, Smithsonian Institution, Washington, D.C. 20560 Search for other works by this author on: GSW Google Scholar Geology (1998) 26 (11): 991–994. https://doi.org/10.1130/0091-7613(1998)026 2.3.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Thomas R. Watters, Mark S. Robinson, Anthony C. Cook; Topography of lobate scarps on Mercury: New constraints on the planet's contraction. Geology 1998;; 26 (11): 991–994. doi: https://doi.org/10.1130/0091-7613(1998)026 2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Lobate scarps are landforms on Mercury that appear to have formed by thrust faulting and are thought to reflect global contraction due to cooling of the planet's interior. Topographic data for 10 mercurian lobate scarps, derived from Mariner 10 images using photoclinometry and digital stereoanalysis, indicate a range in maximum relief of 0.1 to 1.5 km and a range in horizontal shortening of 0.3 to 3.2 km, assuming fault-plane dips (Θ) of 25°. Previous estimates of cumulative compressional strain recorded in the lobate scarps suggest a decrease in Mercury's radius of 1 to 2 km. Our estimate of compressional strain based on these new topographic measurements is ∼0.056% (Θ =25°). This suggests that Mercury's radius decreased by <1 km. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.