Tectonic implications of Mars crustal magnetism

摘要: Mars currently has no global magnetic field of internal origin but must have had one in the past, when crust acquired intense magnetization, presumably by cooling presence an Earth-like (thermoremanent magnetization). A new map Mars, compiled using measurements at ≈400-km mapping altitude Global Surveyor spacecraft, is presented here. The increased spatial resolution and sensitivity this provide insight into evolution crust. Variations crustal appear association with major faults, some previously identified imagery topography (Cerberus Rupes Valles Marineris). Two parallel great faults are Terra Meridiani offset contours. They similar to transform that occur oceanic on Earth, support notion formed during early era plate tectonics.