Evidence for a diagenetic origin of vera rubin ridge, gale crater, Mars: summary and synthesis of curiosity's exploration campaign

Autor: Craig Hardgrove, Kirsten L. Siebach, John P. Grotzinger, Christopher S. Edwards, Alexander B. Bryk, Susanne P. Schwenzer, Sarah Stewart Johnson, William E. Dietrich, Lauren A. Edgar, Sunetra Gupta, Steven G. Banham, Jeffrey G. Catalano, S. Czarnecki, K. M. Stack, Ashwin R. Vasavada, R. V. Morris, Danika Wellington, John Bridges, Christopher H. House, Kristen A. Bennett, S. M. R. Turner, David M. Rubin, Jonas L'Haridon, Jeffrey R. Johnson, Roger C. Wiens, Valerie Fox, S. Jacob, Raymond E. Arvidson, Amy J. Williams, Vivian Z. Sun, Christopher M. Fedo, Jens Frydenvang, Travis Gabriel, Briony Horgan, Woodward W. Fischer, E. B. Rampe, Abigail A. Fraeman, Lucy M. Thompson, N. Mangold, G. M. Wong, Mark R. Salvatore, Nathaniel Stein, G. David
Přispěvatelé: Science and Technology Facilities Council (STFC), UK Space Agency, Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Laboratoire de Planétologie et Géodynamique [UMR 6112] (LPG), Université d'Angers (UA)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Geochemistry & Geophysics
010504 meteorology & atmospheric sciences
Outcrop
Lacustrine
Geochemistry
[SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP]
Mars
Hematite
FLUID-FLOW
Geologic record
01 natural sciences
Diagenesis
Geochemistry and Petrology
0201 Astronomical and Space Sciences
Earth and Planetary Sciences (miscellaneous)
0402 Geochemistry
CHEMCAM INSTRUMENT SUITE
0105 earth and related environmental sciences
geography
geography.geographical_feature_category
Spectral signature
Science & Technology
SEDIMENTARY-ROCKS
MOUNT SHARP
Bedrock
DYNAMIC ALBEDO
Gale crater
Mars Exploration Program
MURRAY FORMATION
15. Life on land
ATOM EXCHANGE
Geophysics
Curiosity
0403 Geology
Space and Planetary Science
visual_art
Physical Sciences
visual_art.visual_art_medium
PAHRUMP HILLS
(U-TH)/HE DATES
Geology
Zdroj: Fraeman, A A, Edgar, L A, Rampe, E B, Thompson, L M, Frydenvang, J, Fedo, C M, Catalano, J G, Dietrich, W E, Gabriel, T S J, Vasavada, A R, Grotzinger, J P, L'Haridon, J, Mangold, N, Sun, V Z, House, C H, Bryk, A B, Hardgrove, C, Czarnecki, S, Stack, K M, Morris, R V, Arvidson, R E, Banham, S G, Bennett, K A, Bridges, J C, Edwards, C S, Fischer, W W, Fox, V K, Gupta, S, Horgan, B H N, Jacob, S R, Johnson, J R, Johnson, S S, Rubin, D M, Salvatore, M R, Schwenzer, S P, Siebach, K L, Stein, N T, Turner, S M R, Wellington, D F, Wiens, R C, Williams, A J, David, G & Wong, G M 2020, ' Evidence for a Diagenetic Origin of Vera Rubin Ridge, Gale Crater, Mars : Summary and Synthesis of Curiosity's Exploration Campaign ', Journal of Geophysical Research: Planets, vol. 125, no. 12, e2020JE006527 . https://doi.org/10.1029/2020JE006527
Journal of Geophysical Research. Planets
Journal of Geophysical Research. Planets, Wiley-Blackwell, 2020, 125, ⟨10.1029/2020je006527⟩
ISSN: 2169-9100
2169-9097
DOI: 10.1029/2020JE006527
Popis: This paper provides an overview of the Curiosity rover's exploration at Vera Rubin ridge and summarizes the science results. Vera Rubin ridge (VRR) is a distinct geomorphic feature on lower Aeolis Mons (informally known as Mt. Sharp) that was identified in orbital data based on its distinct texture, topographic expression, and association with a hematite spectral signature. Curiosity conducted extensive remote sensing observations, acquired data on dozens of contact science targets, and drilled three outcrop samples from the ridge, as well as one outcrop sample immediately below the ridge. Our observations indicate that strata composing VRR were deposited in a predominantly lacustrine setting and are part of the Murray formation. The rocks within the ridge are chemically in family with underlying Murray formation strata. Red hematite is dispersed throughout much of the VRR bedrock, and this is the source of the orbital spectral detection. Gray hematite is also present in isolated, gray‐colored patches concentrated towards the upper elevations of VRR, and these gray patches also contain small, dark Fe‐rich nodules. We propose that VRR formed when diagenetic event(s) preferentially hardened rocks, which were subsequently eroded into a ridge by wind. Diagenesis also led to enhanced crystallization and/or cementation that deepened the ferric‐related spectral absorptions on the ridge, which helped make them readily distinguishable from orbit. Results add to existing evidence of protracted aqueous environments at Gale crater and give new insight into how diagenesis shaped Mars’ rock record.
Databáze: OpenAIRE
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