Mars - Mars Global Surveyor

Tithonium and Ius Chasma, Valles Marineris, Mars

Layers can be clearly seen in the canyon wall in this image of Iu and western Tithonium Chasma, parts of the giant Valles Marineris canyon system on Mars. About 80 layers varying in thickness from 5 to 50 meters are visible in the triangular cliff at the top center of the image. The cliff is over 1 km high, the layering indicates a complex geologic history for Valles Marineris in particular and early Mars in general. The image was taken at about 5:00 p.m. local solar time. The imaged area is near 7 S, 90 W at the western end of Vallis Marineris and is approximately 8 km across. North is at 11:00. (Mars Global Surveyor, MRPS85523)
Larger image: 506K

High resolution tiff file (2.1M)

Location & Time Information
Date/Time (UT): 1997-10-03 T 21:16:02
Distance/Range (km): 1253.99
Central Latitude/Longitude (deg): -6.6, 90.4 W
Orbit(s): 13

Imaging Information
Area or Feature Type: canyon, chasma, valles
Instrument: Mars Orbiter Camera (MOC)
Instrument Resolution (pixels): 2048 line array, 8-bit
Instrument Field of View (deg): 0.4
Filter: N/A
Illumination Incidence Angle (deg): 73.17
Phase Angle (deg): 102.45
Instrument Look Direction: N/A
Surface Emission Angle (deg): 55.04

Ordering Information
CD-ROM Volume: MGSC_0001 (raw image)
NASA Image ID number: MRPS85523
Other Image ID number:
NSSDC Data Set ID (Photo): XD-12A
NSSDC Data Set ID (CD): 96-062A-01A (raw image)
Other ID: MOC2-14C P013-03


[NASA Logo] Authors/Curators:

Dave Williams,, (301) 286-1258
Code 690.1, NASA Goddard Space Flight Center
Greenbelt, MD 20771, USA

Jay Friedlander,, (301) 286-7172
Code 612.4, NASA Goddard Space Flight Center
Greenbelt, MD 20771, USA

NASA Official: Ed Grayzeck,

Last updated: 24 September 2015