Mercury Scarps
Mercury Scarps
Mercury Caloris Basin
Mercury Scarps
Mercury's Long Cliffs
Mercury Scarps

Mercury Scarps

Courtesy of NASA/JPL/Northwestern University.

http://photojournal.jpl.nasa.gov/catalog/PIA02943


A scarp, or cliff, more than 300 km (185 mi) long extends diagonally from upper left to lower right in this Mariner 10 picture. Numerous similar structures have been discovered by Mariner 10 during the television sequences on the spacecraft's second flyby of the planet. These structures are believed to be formed by the compressive forces due to crustal shortening.

The Mariner 10 mission, managed by the Jet Propulsion Laboratory for NASA's Office of Space Science, explored Venus in February 1974 on the way to three encounters with Mercury-in March and September 1974 and in March 1975. The spacecraft took more than 7,000 photos of Mercury, Venus, the Earth and the Moon.