RT Journal Article T1 Arabia Terra, Mars: tectonic and palaeoclimatic evolution of a remarkable sector of martian lithosphere A1 Anguita Virella, Francisco A1 Anguita, Jorge A1 Castilla Cañamero, Gabriel A1 Casa, Miguel Ángel de la A1 Domínguez, José María A1 Herrera, R. A1 Llanes Estrada, María Pilar A1 López, Mónica A1 Martínez, Vicente AB Abstract. A regional geologic study of Arabia Terra, a densely cratered area of Mars northernhemisphere, has revealed the individuality of this province. This is best expressed by an equatorialbelt with a crater age distinctly younger as compared to the northern part of Arabia Terra and toNoachis Terra to the south. We interpret this as an incipient back-arc system provoked by the subductionof Mars lowlands under Arabia Terra during Noachian times. The regional fracture patternsare also best explained in this manner, making it unnecessary to appeal to a rotational instability ofthe planet, which is not supported by the palaeoclimatic indicators in the area. This model could bethe first regional-scale confirmation of Sleep’s (1994) hypothesis of a limited plate consumption asan explanation of the martian dichotomy. PB Springer Science Business Media SN 0167-9295 YR 1997 FD 1997 LK https://hdl.handle.net/20.500.14352/59070 UL https://hdl.handle.net/20.500.14352/59070 LA eng DS Docta Complutense RD 8 abr 2025