1 / 13

Feldspar Distribution in Dune Fields on Mars

Explore the presence and distribution of feldspar in Martian dune field 2938-497 through analysis of emissivity data. Discover the significance of identifying minerals on Mars' surface and the implications for understanding Mars' geological history. Acknowledgments to Dr. Tim Titus, Rose Hayward, Chris Edwards, NAU, and the Space Grant Program.

taylorg
Download Presentation

Feldspar Distribution in Dune Fields on Mars

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. Feldspar Distribution in Dune Fields on Mars Heather Charles Dr. Timothy N. Titus (Mentor) Northern Arizona University/USGS Astrogeology

  2. Why Study Dunes on Mars? • Aeolian environment • Interface between atmosphere and surface • Geological history

  3. Identifying Minerals on Mars’ Surface • Emissivity: measure of infrared energy emitted • Different emissivities = different minerals • Mars Global Surveyor mission

  4. Dune Field 2938-497: Identifying minerals present • Subject of previous study

  5. Hypothesis Feldspar is present in dune field 2938-497 but is non-uniform. Previous study suggested feldspar either absent or non-uniform.

  6. Data • JMARS – emissivity data • Orbital tracks in dune field selected • Spectral library • Davinci deconvolution • Mineral abundance percentages

  7. Analysis • Mineral abundance v. longitude • Trends from west to east • Compared trends from two analyses

  8. Conclusions • Worse results without feldspar • Change in abundance across field • Feldspar present and non-uniform

  9. Acknowledgements • Dr. Tim Titus, mentor • Rose Hayward • Chris Edwards • NAU and the Space Grant Program

  10. Any Questions?

  11. Davinci Deconvolution • Atmospheric correction file • Removed dust, aerosols • Ran data through twice • Spectral mineral library • 8 mineral groups, 44 endmembers

  12. THEMIS

  13. CRISM - Olivine

More Related