1. Red Rock and Concretion Models for Earth and Mars: Teaching diagenesis
Sol 727
Marjorie A. Chan

2. GOAL: enhance sed learning using terrestrial and extraterrestrial comparisons
Water in Meridiani Planum
New, sense of discovery
Building on terrestrial ideas
Application to unknown setting
Interdisciplinary
Earth vs. Mars
Pancam
Microscopic Imager (MI)
Rock Abrasion Tool (RAT)
Image Credit: NASA/JPL/Arizona State University

3. CONCEPTS Sedimentolgy, stratigraphy, diagenesis
Terrestrial analog ss color + concretions -> groundwater flow, host rock properties
Compare to Mars
Hematite: Fe2O3
Goethite: FeO(OH)

4. REGIONAL SETTING N
Jurassic Outcrops

5. Reddening during early diagenesis, burial
3 step Utah model
Grain
scale
Reddening during early diagenesis, burial
Reducing fluids mobilize iron (Fe3+ ->Fe2+)
3. Concretions precipitate at oxidizing mixing front

6. Meridiani Planum MER Opportunity Christiansen et al 2001
Image Credits: NASA/JPL-Caltech

7. Outcrop Context Mars Utah
Eagle Crater
image credit: NASA/JPL/Cornell
Utah
Q: How does Fe distribution and weathering compare?

8. ACCUMULATIONS Mars Utah Q: How do accumulations compare?
image credit: NASA/JPL/Cornell
Q: How do accumulations compare?

9. IN SITU DISTRIBUTION Mars Utah
image: NASA/JPL/Cornell
Mars
Utah
Q: What does in situ distribution tell us? (Compared to other nodule deposits?)

10. Utah Mars DIFFERENT MORPHOLOGIES Mars
images: NASA/JPL/Cornell
5 cm
Q: What causes different shapes? Does size matter?
Mars
image credits: NASA/JPL/Cornell

11. Mars Utah Moessbauer Spectra Eagle Crater
images: NASA/JPL/Cornell
1 cm
Utah
Q: What does mineralogy tell? Internal structure?

12. Mars “Microberries” Q: Why are there small sizes?
Sol 633 images: NASA/JPL/Cornell
Q: Why are there small sizes?

13. Mars Q: Which came first : spherules or lath-like moldic porosity?
Sol 28 images: NASA/JPL/Cornell
Q: Which came first : spherules or lath-like moldic porosity?

14. WHERE to get data? Context: Easy: Harder:
Google Mars
Teaching Visuals
Easy:
MER Mission
Press, Raw, Panorama, 3-D
Harder:
MER Analyst’s Notebook

15. Given such examples, your ideas?
Ways to use data?
Specific projects?
Particular outcomes?
Skill sets?
Other?