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Mars: Second Order Landscapes

Geography 441/541 F/19 Dr. Christine M. Rodrigue. Mars: Second Order Landscapes. Mars: Second Order Landscapes. The Other Great Volcanic Rise Elysium. Mars: Second Order Landscapes. The Other Great Volcanic Rise Elysium (MGS MOLA; MEX HRSC) “Only” 6 km thick “Only” 2,000 km across.

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Mars: Second Order Landscapes

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  1. Geography 441/541 F/19 Dr. Christine M. Rodrigue Mars: Second Order Landscapes C.M. Rodrigue, 2019 Geography, CSULB

  2. Mars: Second Order Landscapes • The Other Great Volcanic Rise • Elysium C.M. Rodrigue, 2019 Geography, CSULB

  3. Mars: Second Order Landscapes • The Other Great Volcanic Rise • Elysium (MGS MOLA; MEX HRSC) • “Only” 6 km thick • “Only” 2,000 km across C.M. Rodrigue, 2019 Geography, CSULB

  4. C.M. Rodrigue, 2019 Geography, CSULB Second Order Landscapes • Hecates Tholus • Elysium Mons • Albor Tholus • MEX HRSC

  5. Mars: Second Order Landscapes • The Volcanic Rises • Elysium • Recent volcanic activity: Hecates C.M. Rodrigue, 2019 Geography, CSULB

  6. Mars: Second Order Landscapes • The Volcanic Rises • Elysium (MEX HRSC) • Glacial features on Hecates? Argued to be snow derived during an ice age produced by a greater obliquity C.M. Rodrigue, 2019 Geography, CSULB

  7. C.M. Rodrigue, 2019 Geography, CSULB Second Order: Valles Marineris

  8. C.M. Rodrigue, 2019 Geography, CSULB Second Order: Valles Marineris • By comparison • Viking VIS; USA overlay: R. Klein, Cornell

  9. C.M. Rodrigue, 2019 Geography, CSULB Second Order: Valles Marineris • Subsidiary chasmata • Viking VIS; Malin Space Science Systems

  10. C.M. Rodrigue, 2019 Geography, CSULB Mars: Second Order Landscapes • The Great Canyons • Valles Marineris • Faulting/rifting • Not your ordinary grand canyon (east end is actually higher than the middle, as some of you saw in Lab 6) • Valles cut into layered material (sediments? lava?) • Extensional rifting (perhaps like East Africa? or not) • Some sign of shear faulting (like San Andreas?) • Pitting (suggests extension) • Alcoves (suggesting subsurface flow) • Landsliding widens the rifts • Massive jökulhlaup-like outflows • ponding

  11. Mars: Second Order Landscapes • The Great Canyons • Valles Marineris • Looks like a canyon draining into Margaritifer and then Chryse • But look at the elevations of the central and eastern ends C.M. Rodrigue, 2019 Geography, CSULB

  12. Mars: Second Order Landscapes • The Great Canyons • Valles Marineris • Layering in walls of Melas Chasma • Dunes covering floor • MRO HiRISE C.M. Rodrigue, 2019 Geography, CSULB

  13. Mars: Second Order Landscapes • The Great Canyons • Valles Marineris • Layering in walls of Hebes Chasma → • And in Candor Chasma ↓ C.M. Rodrigue, 2019 Geography, CSULB

  14. Mars: Second Order Landscapes • The Great Canyons • Valles Marineris • Layering in Coprates Chasma (MRO HiRISE) C.M. Rodrigue, 2019 Geography, CSULB

  15. Mars: Second Order Landscapes • The Great Canyons • Valles Marineris • Extensional rifting in Tithonium Chasma • Pitting (suggests extension) • MO THEMIS C.M. Rodrigue, 2019 Geography, CSULB

  16. Mars: Second Order Landscapes • The Great Canyons • Valles Marineris • Extensional rifting in Coprates Chasma and Catena • Pitting (suggests extension) • MEX HRSC C.M. Rodrigue, 2019 Geography, CSULB

  17. Mars: Second Order Landscapes • Rifting elsewhere • Cerberus Fossæ • MRO HiRISE C.M. Rodrigue, 2019 Geography, CSULB

  18. Mars: Second Order Landscapes • Rifting elsewhere • Cerberus Fossæ • Seem tectonic: faulting • Lava flow from a fissure? • Floods? • MGS MOC C.M. Rodrigue, 2019 Geography, CSULB

  19. Mars: Second Order Landscapes • The Great Canyons • Landslides • South Candor Chasma, looking north toward Ophir Chasma (Viking) C.M. Rodrigue, 2019 Geography, CSULB

  20. Mars: Second Order Landscapes • The Great Canyons • Landslides • West Candor Chasma, looking east (Viking) C.M. Rodrigue, 2019 Geography, CSULB

  21. Mars: Second Order Landscapes • The Great Canyons • Landslides • Noctis Labyrinthus • HRSC ↓ HiRISE → C.M. Rodrigue, 2019 Geography, CSULB

  22. Mars: Second Order Landscapes • The Great Canyons • Tinto Vallis (MEX HRSC) • Theatre-headed tributaries • Like Canyonlands, Utah → • Sapping of groundwater C.M. Rodrigue, 2019 Geography, CSULB

  23. Mars: Second Order Landscapes • The Great Canyons • Ius Chasma • Theatre-headed tributaries • Sapping of groundwater • MO THEMIS ↓ E of Appalachians somewhere → C.M. Rodrigue, 2019 Geography, CSULB

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