1 / 8

High-resolution structural mapping in Southwest Candor Chasma

High-resolution structural mapping in Southwest Candor Chasma. Chris Okubo, Alfred McEwen, HiRISE Team Lunar and Planetary Laboratory, University of Arizona

saramurray
Download Presentation

High-resolution structural mapping in Southwest Candor Chasma

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. High-resolution structural mapping in Southwest Candor Chasma Chris Okubo, Alfred McEwen,HiRISE TeamLunar and Planetary Laboratory, University of Arizona Kevin LewisDivision of Geological and Planetary SciencesCalifornia Institute of TechnologyRandy KirkU.S. Geological Survey, Astrogeology Team

  2. Southwest Candor Chasma, Valles Marineris Candor Chasma

  3. Layers contain abundant evidence of past groundwater Study area

  4. Ground level view

  5. Low altitude view

  6. History recorded in the rocks • Candor Chasma was a sedimentary basin • Paradox basin, SE Utah analog • Preserves geologic history since 3.7 Gya • Chemistry may record global climate change • Transition to acidic groundwater • Iron cycling in acidic environment

  7. High-resolution topography • Uses two HiRISE images of the same target • Same target • Different look directions • Parallax yields topography • Each image • 27 cm per pixel sampling of surface brightness • Detect features ~27 cm across • Resolve 2D shape of features ~1 m across • Both images combined • 1 m per pixel sampling of topography • Detect changes in elevation ~1 m across • Resolve 3D shape of features 3-5 m across • Unprecedented resolution of geomorphology from orbit

More Related