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Fig. 4 | Earth, Planets and Space

Fig. 4

From: Evolution of the rheological structure of Mars

Fig. 4

Temperature profiles every 1 billion years on Mars calculated from the surface heat flow and the present-day abundance of radioactive isotopes. a Temperature profile of the Martian North Pole. The surface temperature and the Moho depth were assumed to be 155 K and 35 km (Phillips et al. 2008), respectively. b Temperature profiles of the Martian highlands (Solis Planum). The surface temperature and the Moho depth were assumed to be 220 K (Kieffer et al. 1977) and 65 km (Neumann et al. 2004), respectively

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