Mariner 10 Pictures of Mercury: First Results

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Science  26 Apr 1974:
Vol. 184, Issue 4135, pp. 459-461
DOI: 10.1126/science.184.4135.459


Mercury has a heavily cratered surface cotntaining basins up to at least 1300 kilometers diameter flooded with mare-like material. Many features are closely similar to those on the moon, but significant structural differences exist. Major chemical differentiation before termination of accretion is implied.