Fig. 1From: Tectonic evolution of northwestern Imbrium of the Moon that lasted in the Copernican PeriodConcentric systems of the mare ridges in Mare Imbrium. Red lines indicate the mare ridges, gray circles indicate prominent craters, and brown areas indicate highland materials. PL: Promontorium Laplace. R: Montes Recti. C: Mons Chajorra. AV: Alta VistaBack to article page