• Photobucket Songs of Earth's Creations. In an endless cycle of eons she creates and destroys masterpieces, reusing her building materials to create anew. From death comes life.Photobucket
  • ****


    Tuesday, November 25, 2008


    Mars - Greatest Canyon in Solar System

    Mars Atlas
    (the grandest canyon!)

    Valles Marineris size comparison Valles Marineris, or Mariner Valley, is a vast canyon system that runs along the Martian equator just east of the Tharsis region. Valles Marineris is 4000 km (2500 mi) long and reaches depths of up to 7 km (4 mi)! For comparison, the Grand Canyon in Arizona is about 800 km (500 mi) long and 1.6 km (1 mi) deep. In fact, the extent of Valles Marineris is as long as the United States and it spans about 20 percent (1/5) of the entire distance around Mars! The canyon extends from the Noctis Labyrinthus region in the west to the chaotic terrain in the east. Most researchers agree that Valles Marineris is a large tectonic "crack" in the Martian crust, forming as the planet cooled, affected by the rising crust in the Tharsis region to the west, and subsequently widened by erosional forces. However, near the eastern flanks of the rift there appear to be some channels that may have been formed by water.

    Click for larger view
    MOC image of layering in Valles Marineris
    Click for larger view
    Mosaic of the Valles Marineris hemisphere of Mars
    Click for larger view
    MOC image of sand dunes within the Hebes Chasma region of Valles Marineris
    Valles Marineris
    A color image of Valles Marineris, the great canyon of Mars; north toward top. View larger image and details

    For more on Valles Marineris:
    University of Michigan
    Malin Space Science Systems

    The Grand Canyon of Mars

    Anyone who has peeked over the rim of the Grand Canyon comes away awed, because there is nothing like it on Earth. Martians, however, would merely chuckle.

    Mars has Valles Marineris, a system of canyons that stretch for 2,485 miles (4,000 kilometers -- almost the entire width of the United States.

    Side canyons are often up to 60 miles (100 kilometers) wide. The central gorge is 370 miles (600 kilometers) across in places. At some spots along the rim, you'd have to look 6 miles (10 kilometers) down to find the bottom. That's six or seven times deeper than the supposedly Grand Canyon.

    This image was created by the U.S. Geological Survey by merging Viking mission images with topographic data. It shows just a portion of Valles Marineris. The location, Candor Chasma, is one some scientists suspect has been sculpted at least in part by flowing water.

    -- Robert Roy Britt

    The upper-most layers of rock in many areas of Valles marineris on Mars have been stripped away by erosion, providing a glimpse of the subsurface that was once buried deep underground. Some fractures in the rock show evidence of fluid alteration, yielding clues into the ancient fluid chemistry and habitability of the subsurface. Credit: Science


    Comments: Post a Comment

    Subscribe to Post Comments [Atom]

    Links to this post:

    Create a Link

    << Home


    May 2006   June 2006   September 2006   October 2006   December 2006   January 2007   February 2007   May 2007   November 2007   December 2007   January 2008   March 2008   April 2008   July 2008   August 2008   October 2008   November 2008   December 2008   February 2009   March 2009   May 2009   July 2009   August 2009   September 2009   October 2009   November 2009   December 2009  

    This page is powered by Blogger. Isn't yours?

    Subscribe to Posts [Atom]