Wannan paleomagnetism na magnetically m ma'adanai ne kama da m bands samu a kan Duniya ta teku bene. daya ka'idar, da aka buga a 1999 da kuma sake bincika a watan Oktoba 2005 (tare da taimakon Mars Global Surveyor), shi ne cewa wadannan bands bayar da shawarar tectonic farantin aiki a kan Mars biliyan hudu da suka wuce, kafin duniya dynamo daina aiki da kuma duniya ta Magnetic filin faded. An yi tunani cewa, a lokacin Solar System ta samuwar, Mars da aka halitta a matsayin sakamakon wani tsari na iska accretion daga hasken rana disk cewa sun orbited da hasken rana disk yet, bayar da shawarar cewa wadannan alternating polarity reversals sun faru a baya.
shekaru biliyan hudu da suka wuce