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oai:docta.ucm.es:20.500.14352/510572024-07-30T13:31:17Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Anguita Virella, Francisco author Fernández Caliani, J.C. author Cordero Tercero, María Guadalupe author Carrasquilla Ortíz, Sandra author Anguita, Jorge author Núñez, Andrés author Rodríguez García, Sergio author García, Judit author 2006 A number of tectonic structures have been located at the Thaumasia Plateau, Daedalia Planum and Aonia Terra, Mars. They include isolated folds with axial traces up to 200 km long, trains of tightly folded structures tens of km long, and thrusts. Their size and geometry are similar to those on Earth, and the direction of compression seems to have varied amply with time, suggesting a complex tectonic evolution. Crater counts on the deformed terrain point to Noachian to Early Hesperian ages. On the basis of the geometry and geological relations of these structures, we propose that they form part of an old martian orogen, the Thaumasia–Aonia Orogen, which embraced not only the Thaumasia Plateau, but areas of Daedalia Planum, Aonia Terra and Nereidum Montes as well. A regional coherent layering is previous to the deformation and could represent the trace of even older stresses on the martian lithosphere. 0019-1035 10.1016/j.icarus.2006.07.026 https://hdl.handle.net/20.500.14352/51057 http://www.elsevier.com/locate/icarus Evidences for a Noachian–Hesperian orogeny in Mars