Eighth International Conference on Mars (2014) sess351.pdf
Tuesday, July 15, 2014 MARS’ FIRST BILLION YEARS: THE ERA OF WATER, SULFUR, AND OTHER VOLATILES: II 1:00 p.m. Beckman Auditorium
Chairs: Janice Bishop Jeff Johnson
1:00 p.m. Carter J. * Poulet F. Bibring J.-P. Murchie S. L. Mangold N. Geological Implications for Diverse Aqueous Minerals on Mars [#1207] We present the inferred geological formation pathways for aqueous minerals detected from orbit and landed mission, and discuss their constraints on the geological and aqueous history of Mars.
1:15 p.m. Viviano-Beck C. E. * Murchie S. L. Phyllosilicates in the Walls of Valles Marineris and the Tectonic Evolution of the Greater Tharsis Region [#1220] Phyllosilicate marker beds rule out proposed tectonic mechanisms that predict lateral offset across Valles Marineris. Deposits in E. Coprates experienced localized thermal alteration, providing a window into the formation of the Thaumasia Highlands.
1:30 p.m. Loizeau D. * Carter J. Mangold N. Poulet F. Rossi A. P. Allemand P. Quantin C. Bibring J.-P. Widespread Surface Weathering on Early Mars: Possible Implication on the Past Climate [#1203] Widespread hydrous clays on Mars indicate diverse past aqueous environments, from the surface to kilometric depths. The study of the past habitability and past climates of the planet requires assessing the importance of sustained surface water.
1:45 p.m. Horgan B. * Bishop J. L. Fraeman A. A. Farrand W. H. Plateau Wetlands at Mawrth Vallis and Possible Implications for Clay and Oxide Layers in Gale Crater [#1276] The diverse clay/sulfate mineralogy at Mawrth Vallis is consistent with alteration in a habitable wetland-like surface environment, with variable redox conditions and pH. Similar redox conditions may have created clay and oxides layers on Mt. Sharp.
2:00 p.m. Mustard J. F. * Wiseman S. M. Goudge T. A. Carbonate in Nili Fossae at the Noachian-Hesperian Boundary: Importance of Post-Syrtis Hydrological Systems [#1344] Exceptionally well-exposed mineral-bearing strata in Nili Fossae show reactants (olivine) and products (magnesite) in close proximity. Association with surface and subsurface hydrology point a promising Noachian-Hesperian habitable environment.
2:15 p.m. Afternoon Break
2:30 p.m. Arvidson R. E. * Squyres S. W. Murchie S. L. Catalano J. G. Mars Reconnaissance Orbiter and Opportunity Observations of Burns Formation and Underlying Strata: Crater Hopping in Meridiani Planum [#1238] We combine mineralogic inferences from CRISM hyperspectral data and Opportunity observations to understand the geochemical and environmental histories of the Noachian crust and Burns formation materials in Meridiani Planum.
2:45 p.m. Flahaut J. * Massé M. Le Deit L. Thollot P. Bibring J.-P. Poulet F. Quantin C. Mangold N. Michalski J. Bishop J. L. Sulfate-Rich Deposits on Mars: A Review of Their Occurences and Geochemical Implications [#1196] The present study presents a comprehensive review of the spatial distribution, geological context and geochemical implications of sulfate detections on Mars.
Eighth International Conference on Mars (2014) sess351.pdf
3:00 p.m. Wang Alian. * Nature, Formation, and Climatic Meaning of Interbedded Sulfate Stratigraphy on Mars. [#1058] A new understanding on the nature of two types of hydrous sulfates in interbedded stratigraphy on Mars and their formation processes based on the thermodynamic and kinetic properties of hydrous sulfates revealed by MFRP fund laboratory experiments.
3:15 p.m. Craig P. I. * Ming D. W. Rampe E. B. Sulfate Formation from Acid-Weathered Phyllosilicates: Implications for the Aqueous History of Mars [#1323] Sulfates formed from acid-weathered phyllosilicates may explain the geologic relationships between phyllosilicates and sulfates observed in close proximity to each other on Mars.
3:30 p.m. Niles P. B. * Michalski J. Edwards C. S. Sedimentary Mounds on Mars: Tracing Present-Day Formation Processes into the Past [#1421] Based on the numerous and compelling similarities between modern and older mound deposits on Mars, it is likely that present day processes may provide crucial insight into the past.