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Evolution of the Rembrandt Impact Basin on Mercury

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Science  01 May 2009:
Vol. 324, Issue 5927, pp. 618-621
DOI: 10.1126/science.1172109

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Abstract

MESSENGER’s second Mercury flyby revealed a ~715-kilometer-diameter impact basin, the second-largest well-preserved basin-scale impact structure known on the planet. The Rembrandt basin is comparable in age to the Caloris basin, is partially flooded by volcanic plains, and displays a unique wheel-and-spoke–like pattern of basin-radial and basin-concentric wrinkle ridges and graben. Stratigraphic relations indicate a multistaged infilling and deformational history involving successive or overlapping phases of contractional and extensional deformation. The youngest deformation of the basin involved the formation of a ~1000-kilometer-long lobate scarp, a product of the global cooling and contraction of Mercury.

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