Melas Chasm (Enhanced Color)

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Caption:

This picture (centered at latitude 10 degrees S., longitude 74 degrees W.) shows much of Melas Chasm and a portion of Candor Chasm (upper right) in central Valles Marineris. Several interesting compositional units can be seen in the image: white materials (center-right) may consist of carbonates or some other evaporite deposit, pinkish materials (upper right) may be relatively rich in crystalline iron oxides, and greenish materials (lower left) correspond to dark sand dunes. Viking Orbiter Picture Numbers 279B41 (violet), 279B49 (green), and 279B51 (red) at 257 m/pixel resolution. Picture width is 261 km. North is 50 degrees clockwise from top.

Cataloging Keywords:

Name	Value	Additional Values
Target	Mars
System
Target Type	Planet
Mission	Viking	Mariner
Instrument Host	Viking 2 Orbiter
Host Type	Orbiter	Flyby Spacecraft
Instrument	Visual Imaging Subsystem - Camera A
Detector
Extra Keywords	Color, Dune
Acquisition Date
Release Date	1998-06-04
Date in Caption
Image Credit	NASA/JPL/USGS
Source	photojournal.jpl.nasa.gov/catalog/PIA00156
Identifier	PIA00156