Caloris Basin in Color
The Great Caloris Basin on Mercury
Mercury Caloris Basin
Caloris Basin in Color

Caloris Basin in Color

Courtesy of NASA/Johns Hopkins University Applied Physics Laboratory/Arizona State University/Carnegie Institution of Washington. Image reproduced courtesy of Science/AAAS

http://photojournal.jpl.nasa.gov/catalog/PIA10359


This false-color image of Mercury shows the great Caloris impact basin, visible in this image as a large, circular, orange feature in the center of the picture.

The contrast between the colors of the Caloris basin floor and those of the surrounding plains indicate that the composition of Mercury's surface is variable. Many additional geological features with intriguing color signatures can be identified in this image. For example, the bright orange spots just inside the rim of Caloris basin are thought to mark the location of volcanic features.

MESSENGER Science Team members are studying these regional color variations in detail, to determine the different mineral compositions of Mercury's surface and to understand the geologic processes that have acted on it.