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Ridges and Fractures on Floor of Caloris Basin
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Ridges and Fractures on Floor of Caloris Basin

March 17, 2003
This image (FDS 126), acquired during the spacecraft's first encounterwith Mercury, includes part of the floor of the Caloris basin showing the ridges and fractures. Notice that the length and the width if the fractures increase toward the center of the basin (lower right to upper left) and that the fractures transect the ridges at various angles. The two irregular depressions at the right edge of the image near the centerare rimless and apparently collapse structures rather than impact craters.


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