Saturday, February 20, 2010

One More Mars Pic

Posted By on Sat, Feb 20, 2010 at 10:10 AM

PSP_001810_1825.jpg
  • NASA/JPL/University of Arizona

One more Mars photo from this week's batch of photos from the UA's HiRISE camera.

HiRISE team member Maria Banks tells us:

This observation shows a northwestern portion of the floor of a crater in the Arabia Terra region of Mars.

In the subimage, several light-toned layered outcrops are

visible, surrounded by dunes of varying sizes. The outcrops exhibit multiple alternating light and dark layers with extensive fracturing and small fault offsets. The outcrops represent the eroded remains of sedimentary rocks that formed from sediments once deposited within the crater. Possible origins for the sediments include windblown debris, volcanic ash falling from the sky, or sediments that accumulated in a lake on the crater floor.

The dark filamentary streaks in the right half of the full image were most likely created by the disruption and/or removal of thin surface coatings of dust by the passage of a dust devil. Streak patterns such as these have been found to change over periods of several months to an Earth year, suggesting that the ones seen here probably formed relatively recently.

Tags: ,

Comments

Subscribe to this thread:

Add a comment

More by Jim Nintzel

  • Editor's Note

    Fourth and Goals
    • May 17, 2018
  • The Skinny

    The Congressional District 2 democratic showdown
    • May 17, 2018
  • The Skinny

    Class Warfare and Other Notes 13 Takeaways from the 2018 Legislative Session
    • May 10, 2018
  • More »
Today | Mon | Tue | Wed | Thu | Fri | Sat
Meditation and Buddhist study

Meditation and Buddhist study @ Sky Island Zen

Tuesdays, Saturdays

All of today's events | Staff Picks

Staff Pick

Laughing Liberally Comedy Showcase

Laughing Liberally brings top local comedians together to lampoon local, State and National politics. Last Sunday of… More

@ The Flycatcher Fourth Sunday of every month, 8-9:30 p.m. 340 E. Sixth St.

» More Picks

Submit an Event Listing

Popular Content

  1. The Weekly List: 23 Things To Do In Tucson This Week (The Range: The Tucson Weekly's Daily Dispatch)
  2. UA's 'Freedom School' Isn't Free Of Costs Or Hiring Restrictions (The Range: The Tucson Weekly's Daily Dispatch)
  3. Laughing Stock: Laff’s and Tears, Plus New Mics (The Range: The Tucson Weekly's Daily Dispatch)
  4. Claytoon of the Day: A Cosby Sweater (The Range: The Tucson Weekly's Daily Dispatch)
  5. The Weekly List: 22 Things To Do In Tucson This Week (The Range: The Tucson Weekly's Daily Dispatch)

© 2018 Tucson Weekly | 7225 Mona Lisa Rd. Ste. 125, Tucson AZ 85741 | (520) 797-4384 | Powered by Foundation