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Prepared for the National Aeronautics and Space Administration

Geologic Map of Ophir and Central Candor Chasmata (MTM –05072) of Mars

By Baerbel K. Lucchitta

1999

Introduction

The geologic map of Ophir and central Candor Chasmata is one of a series of 1:500,000 scale maps prepared for areas on Mars that are of particular scientific interest and may serve as potential future landing sites. This map is also part of a set that includes east Candor Chasma, west Candor Chasma, and Melas Chasma. The geologic interpretations are based dominantly on medium- and high-resolution Viking images, many of them stereoscopic, and supplemented by lower resolution apoapsis and other color images. A strip of very high resolution stereoscopic images (~20 m/pixel) crosses the central part of the quadrangle from northwest to southeast and served to clarify detailed relations not obvious on other images. A topographic map with contour intervals of 200 m was also used, as were multidirectional oblique images derived from merged image mosaics and topography (see fig. 1) (Bertolini and McEwen, 1990). Geologic relations and interpretations are based on the entire central Valles Marineris map set. The map area is included in the Valles Marineris map of Witbeck and others (1991), but units were defined independently. Age assignments, however, were integrated with those by Witbeck and others and Scott and Tanaka (1986).

Last modified July 11, 2012
First posted January 8, 2004

• Map PDF (~50" x ~38"; 21.3 MB)

• This report is also available in print from:
  
  USGS Information Services, Box 25286,
  Federal Center, Denver, CO 80225
  telephone: 888 ASK-USGS; e-mail: infoservices@usgs.gov

For additional information:
Contact Astrogeology Research Program staff
Astrogeology Science Center
U.S. Geological Survey
2255 N. Gemini Dr.
Flagstaff, AZ 86001
http://astrogeology.usgs.gov/

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Suggested citation:

Lucchittas, B.K., 1999, Geologic map of Ophir and central Candor Chasmata (MTM –05072) of Mars: U.S. Geological Survey Geologic Investigations Series I–2568. (Available at https://pubs.usgs.gov/imap/i2568/.)