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Raditladi basin, imaged during MESSENGER's first Mercury flyby and named
in April 2008 (PIA10611), is intriguing for several reasons. Shown extending
across the top of this high-resolution NAC image, Raditladi basin is
relatively young, with only a few small impact craters on the basin's
floor and with well-preserved basin walls and peak-ring structure. Visible
on the floor of Raditladi are concentric troughs (blue arrows), formed by
extension (pulling apart) of the surface. However, extensional troughs on
Mercury are quite rare, having been seen to date only in two other
locations on the planet: as part of Pantheon Fossae and other troughs in
Caloris basin (PIA11077) and on the floor of Rembrandt, the large basin
discovered during MESSENGER's second Mercury flyby (PIA11769). Understanding
how these troughs formed in the young Raditladi basin could provide an
important indicator of processes that acted relatively recently in
Mercury’s geologic history. Raditladi basin was the topic of one of
25 presentations made by MESSENGER team members at the
40th Lunar and Planetary Science Conference held last week.
Date Acquired: January 14, 2008
Image Mission Elapsed Time (MET): 108826792
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Resolution: 250 meters/pixel (0.16 miles/pixel)
Scale: Raditladi basin has a diameter of 257 kilometers (160 miles)
Spacecraft Altitude: 10,000 kilometers (6,200 miles)
These images are from MESSENGER, a NASA Discovery mission to conduct the
first orbital study of the innermost planet, Mercury. For information
regarding the use of images, see the MESSENGER image use policy.