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The Unique Rock Diversity Exposed in Coprates Chasma

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The Unique Rock Diversity Exposed in Coprates Chasma e-Mars Rock diversity in term of age and Exceptional rock diversity exposed in Coprates Chasma C. Quantin, B. Bultel, J. Flahaut, P. Thollot, J. Carter, A. Ody, D. Loizeau, L. Lozac'h, M. Andreani , I. Daniel, H. Clenet NOTE ADDED BY JPL WEBMASTER: This content has not been approved or adopted by, NASA, JPL, or the California Institute of Technology. This document is being made available for information purposes only, and any views and opinions expressed herein do not necessarily state or reflect those of NASA, JPL, or the California Institute of Technology. M2020 e-Mars First Landing Site Workshop 1) Why Coprates Chasma is a key location ? 2) Orbital observations around the landing ellipse 3) Engineering contrains of the landing site S Vert. Exa x2 M2020 e-Mars First Landing Site Workshop M2020 e-Mars First Landing Site Workshop 60 km Quantin et al., Icarus, 2012 CRISM N HIRISE 10 km SU=0.086D1,03 SU: Stratigraphic Uplift ~1/10 D :Diameter (Cintala and Grieve, 1998) Murchie et al., 2009 Flahaut et al., Icarus, 2012 M2020 e-Mars First Landing Site Workshop N Basaltic volcanic Martian initial layers partly crust altered altered 25 m M2020 e-Mars First Landing Site Workshop M2020 e-Mars First Landing Site Workshop Evidence for Comparison with the cross hydrothermally altered section exposed in the stratigraphy : Saponite, Walls of Coprates Chasma Chlorite, Zéolite… Flahaut et al., 2012, Murchie et al., 2009 , Viviano- Beck and Murchie, 2014 M2020 e-Mars First Landing Site Workshop Overall mineralogical context Perched phyllosilicates Detection from CRISM hyperspectral data Flahaut et al., 2012 LCP Olivine Phyllosilicates Sulfates Perched sulfate-rich ILD (Fueten et al., 2011) M2020 e-Mars First Landing Site Workshop Horst Scientific objectives : Land on the canyon floor deposits and go to sample the horst. Possible route Canyon floor deposits M2020 e-Mars First Landing Site Workshop A Thickness DTM (HRSC) B -4 920 -4 940 Floor deposits -4 960 -4 980 ~100 m -5 000 -5 020 -5 040 0 200 400 600 800 1 000 1 200 1 400 1 600 1 800 B Light toned unit s exposed on the flancks of the floor deposit A Flat capping,highly impacted and streamlined 500 m e-Mars M2020 First Landinglines Site Workshop Top of the floor deposits : streamlined, impacted surface 100 m M2020 e-Mars First Landing Site Workshop Top of the floor deposits Divergent Finger-like terminations M2020 e-Mars First Landing Site Workshop Top of the floor deposits Divergent Finger-like Landslide-Dam Steamlined floor Enclosed depression terminations M2020 e-Mars First Landing Site Workshop Stratigraphy of the floor deposits : fresh light toned outcrops (100 m) base top 100 m M2020 e-Mars First Landing Site Workshop Stratigraphy of the floor deposits : fresh massive light toned outcrops (100 m) top base 100 m M2020 e-Mars First Landing Site Workshop Horst morphologies : basal part of the horst Horst Past alluvial fans ? 200 m M2020 e-Mars First Landing Site Workshop Engineering contrains Slope Thermal inertia M2020 e-Mars First Landing Site Workshop Conclusions Why landing in Coprates Chasma ? Science summary -Primitive Martian crust N O A - hydrothermal alteration of the martian C H crust (suitable for life emergence ?) I A -Tharsis volcanism N H -Tectonics (VM opening) E S P -Sulfates rich floor deposit recently exhumed E R (conservation) I A N -Water flow morphologies and .
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