Phyllosilicate and sulfate-hematite deposits within Miyamoto crater in Southern Sinus Meridiani, Mars

Sandra M. Wiseman; R. E. Arvidson; J. C. Andrews-Hanna; R. N. Clark; N. L. Lanza; D. des Marais; G. A. Marzo; R. V. Morris; S. L. Murchie; H. E. Newsom; E. Z. Noe Dobrea; A. M. Ollila; F. Poulet; T. L. Roush; F. P. Seelos; G. A. Swayze

doi:10.1029/2008GL035363

Phyllosilicate and sulfate-hematite deposits within Miyamoto crater in Southern Sinus Meridiani, Mars

Sandra M. Wiseman, R. E. Arvidson, J. C. Andrews-Hanna, R. N. Clark, N. L. Lanza, D. des Marais, G. A. Marzo, R. V. Morris, S. L. Murchie, H. E. Newsom, E. Z. Noe Dobrea, A. M. Ollila, F. Poulet, T. L. Roush, F. P. Seelos, G. A. Swayze

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Abstract

Orbital topographic, image, and spectral data show that sulfate- and hematite-bearing plains deposits similar to those explored by the MER rover Opportunity unconformably overlie the northeastern portion of the 160 km in diameter Miyamoto crater. Crater floor materials exhumed to the west of the contact exhibit CRISM and OMEGA NIR spectral signatures consistent with the presence of Fe/Mg-rich smectite phyllosilicates. Based on superposition relationships, the phyllosilicate-bearing deposits formed either in-situ or were deposited on the floor of Miyamoto crater prior to the formation of the sulfate-rich plains unit. These findings support the hypothesis that neutral pH aqueous conditions transitioned to a ground-water driven acid sulfate system in the Sinus Meridiani region. The presence of both phyllosilicate and sulfate- and hematite-bearing deposits within Miyamoto crater make it an attractive site for exploration by future rover missions.

Original language	English (US)
Article number	L19204
Journal	Geophysical Research Letters
Volume	35
Issue number	19
DOIs	https://doi.org/10.1029/2008GL035363
State	Published - Oct 16 2008
Externally published	Yes

ASJC Scopus subject areas

Geophysics
General Earth and Planetary Sciences

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10.1029/2008GL035363

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Wiseman, S. M., Arvidson, R. E., Andrews-Hanna, J. C., Clark, R. N., Lanza, N. L., des Marais, D., Marzo, G. A., Morris, R. V., Murchie, S. L., Newsom, H. E., Noe Dobrea, E. Z., Ollila, A. M., Poulet, F., Roush, T. L., Seelos, F. P., & Swayze, G. A. (2008). Phyllosilicate and sulfate-hematite deposits within Miyamoto crater in Southern Sinus Meridiani, Mars. Geophysical Research Letters, 35(19), Article L19204. https://doi.org/10.1029/2008GL035363

Wiseman, SM, Arvidson, RE, Andrews-Hanna, JC, Clark, RN, Lanza, NL, des Marais, D, Marzo, GA, Morris, RV, Murchie, SL, Newsom, HE, Noe Dobrea, EZ, Ollila, AM, Poulet, F, Roush, TL, Seelos, FP & Swayze, GA 2008, 'Phyllosilicate and sulfate-hematite deposits within Miyamoto crater in Southern Sinus Meridiani, Mars', Geophysical Research Letters, vol. 35, no. 19, L19204. https://doi.org/10.1029/2008GL035363

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title = "Phyllosilicate and sulfate-hematite deposits within Miyamoto crater in Southern Sinus Meridiani, Mars",

abstract = "Orbital topographic, image, and spectral data show that sulfate- and hematite-bearing plains deposits similar to those explored by the MER rover Opportunity unconformably overlie the northeastern portion of the 160 km in diameter Miyamoto crater. Crater floor materials exhumed to the west of the contact exhibit CRISM and OMEGA NIR spectral signatures consistent with the presence of Fe/Mg-rich smectite phyllosilicates. Based on superposition relationships, the phyllosilicate-bearing deposits formed either in-situ or were deposited on the floor of Miyamoto crater prior to the formation of the sulfate-rich plains unit. These findings support the hypothesis that neutral pH aqueous conditions transitioned to a ground-water driven acid sulfate system in the Sinus Meridiani region. The presence of both phyllosilicate and sulfate- and hematite-bearing deposits within Miyamoto crater make it an attractive site for exploration by future rover missions.",

author = "Wiseman, {Sandra M.} and Arvidson, {R. E.} and Andrews-Hanna, {J. C.} and Clark, {R. N.} and Lanza, {N. L.} and {des Marais}, D. and Marzo, {G. A.} and Morris, {R. V.} and Murchie, {S. L.} and Newsom, {H. E.} and {Noe Dobrea}, {E. Z.} and Ollila, {A. M.} and F. Poulet and Roush, {T. L.} and Seelos, {F. P.} and Swayze, {G. A.}",

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AU - Arvidson, R. E.

AU - Andrews-Hanna, J. C.

AU - Clark, R. N.

AU - Lanza, N. L.

AU - des Marais, D.

AU - Marzo, G. A.

AU - Morris, R. V.

AU - Murchie, S. L.

AU - Newsom, H. E.

AU - Noe Dobrea, E. Z.

AU - Ollila, A. M.

AU - Poulet, F.

AU - Roush, T. L.

AU - Seelos, F. P.

AU - Swayze, G. A.

PY - 2008/10/16

Y1 - 2008/10/16

N2 - Orbital topographic, image, and spectral data show that sulfate- and hematite-bearing plains deposits similar to those explored by the MER rover Opportunity unconformably overlie the northeastern portion of the 160 km in diameter Miyamoto crater. Crater floor materials exhumed to the west of the contact exhibit CRISM and OMEGA NIR spectral signatures consistent with the presence of Fe/Mg-rich smectite phyllosilicates. Based on superposition relationships, the phyllosilicate-bearing deposits formed either in-situ or were deposited on the floor of Miyamoto crater prior to the formation of the sulfate-rich plains unit. These findings support the hypothesis that neutral pH aqueous conditions transitioned to a ground-water driven acid sulfate system in the Sinus Meridiani region. The presence of both phyllosilicate and sulfate- and hematite-bearing deposits within Miyamoto crater make it an attractive site for exploration by future rover missions.

AB - Orbital topographic, image, and spectral data show that sulfate- and hematite-bearing plains deposits similar to those explored by the MER rover Opportunity unconformably overlie the northeastern portion of the 160 km in diameter Miyamoto crater. Crater floor materials exhumed to the west of the contact exhibit CRISM and OMEGA NIR spectral signatures consistent with the presence of Fe/Mg-rich smectite phyllosilicates. Based on superposition relationships, the phyllosilicate-bearing deposits formed either in-situ or were deposited on the floor of Miyamoto crater prior to the formation of the sulfate-rich plains unit. These findings support the hypothesis that neutral pH aqueous conditions transitioned to a ground-water driven acid sulfate system in the Sinus Meridiani region. The presence of both phyllosilicate and sulfate- and hematite-bearing deposits within Miyamoto crater make it an attractive site for exploration by future rover missions.

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Phyllosilicate and sulfate-hematite deposits within Miyamoto crater in Southern Sinus Meridiani, Mars

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