Smectite deposits in Marathon Valley, Endeavour Crater, Mars, identified using CRISM hyperspectral reflectance data

V. K. Fox; R. E. Arvidson; E. A. Guinness; S. M. McLennan; J. G. Catalano; S. L. Murchie; K. E. Powell

doi:10.1002/2016GL069108

Smectite deposits in Marathon Valley, Endeavour Crater, Mars, identified using CRISM hyperspectral reflectance data

V. K. Fox, R. E. Arvidson, E. A. Guinness, S. M. McLennan, J. G. Catalano, S. L. Murchie, K. E. Powell

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39 Scopus citations

Abstract

The ~100 m wide Marathon Valley crosscuts the Cape Tribulation rim segment of the 22 km diameter, Noachian-age Endeavour impact crater on Mars. Single-scattering albedo spectra retrieved from three Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) Full-Resolution Targeted (FRT, regularized to 18 m/pixel) and two Along Track Oversampled (ATO, regularized to 12 m/pixel) observations indicate the presence of Fe³⁺-Mg²⁺ smectite exposures located in Marathon Valley with combination vibration metal-OH absorption strength comparable to smectite spectral signatures in Mawrth Vallis. The Opportunity rover was directed to the exposures and documented the presence of Shoemaker formation impact breccias that have been isochemically altered, likely by fracture-controlled aqueous fluids.

Original language	English
Pages (from-to)	4885-4892
Number of pages	8
Journal	Geophysical Research Letters
Volume	43
Issue number	10
DOIs	https://doi.org/10.1002/2016GL069108
State	Published - 2016

Keywords

Mars
phyllosilicates
smectites

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10.1002/2016GL069108

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title = "Smectite deposits in Marathon Valley, Endeavour Crater, Mars, identified using CRISM hyperspectral reflectance data",

abstract = "The ~100 m wide Marathon Valley crosscuts the Cape Tribulation rim segment of the 22 km diameter, Noachian-age Endeavour impact crater on Mars. Single-scattering albedo spectra retrieved from three Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) Full-Resolution Targeted (FRT, regularized to 18 m/pixel) and two Along Track Oversampled (ATO, regularized to 12 m/pixel) observations indicate the presence of Fe3+-Mg2+ smectite exposures located in Marathon Valley with combination vibration metal-OH absorption strength comparable to smectite spectral signatures in Mawrth Vallis. The Opportunity rover was directed to the exposures and documented the presence of Shoemaker formation impact breccias that have been isochemically altered, likely by fracture-controlled aqueous fluids.",

keywords = "Mars, phyllosilicates, smectites",

author = "Fox, {V. K.} and Arvidson, {R. E.} and Guinness, {E. A.} and McLennan, {S. M.} and Catalano, {J. G.} and Murchie, {S. L.} and Powell, {K. E.}",

year = "2016",

doi = "10.1002/2016GL069108",

language = "English",

volume = "43",

pages = "4885--4892",

journal = "Geophysical Research Letters",

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number = "10",

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T1 - Smectite deposits in Marathon Valley, Endeavour Crater, Mars, identified using CRISM hyperspectral reflectance data

AU - Fox, V. K.

AU - Arvidson, R. E.

AU - Guinness, E. A.

AU - McLennan, S. M.

AU - Catalano, J. G.

AU - Murchie, S. L.

AU - Powell, K. E.

PY - 2016

Y1 - 2016

N2 - The ~100 m wide Marathon Valley crosscuts the Cape Tribulation rim segment of the 22 km diameter, Noachian-age Endeavour impact crater on Mars. Single-scattering albedo spectra retrieved from three Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) Full-Resolution Targeted (FRT, regularized to 18 m/pixel) and two Along Track Oversampled (ATO, regularized to 12 m/pixel) observations indicate the presence of Fe3+-Mg2+ smectite exposures located in Marathon Valley with combination vibration metal-OH absorption strength comparable to smectite spectral signatures in Mawrth Vallis. The Opportunity rover was directed to the exposures and documented the presence of Shoemaker formation impact breccias that have been isochemically altered, likely by fracture-controlled aqueous fluids.

AB - The ~100 m wide Marathon Valley crosscuts the Cape Tribulation rim segment of the 22 km diameter, Noachian-age Endeavour impact crater on Mars. Single-scattering albedo spectra retrieved from three Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) Full-Resolution Targeted (FRT, regularized to 18 m/pixel) and two Along Track Oversampled (ATO, regularized to 12 m/pixel) observations indicate the presence of Fe3+-Mg2+ smectite exposures located in Marathon Valley with combination vibration metal-OH absorption strength comparable to smectite spectral signatures in Mawrth Vallis. The Opportunity rover was directed to the exposures and documented the presence of Shoemaker formation impact breccias that have been isochemically altered, likely by fracture-controlled aqueous fluids.

KW - Mars

KW - phyllosilicates

KW - smectites

UR - http://www.scopus.com/inward/record.url?scp=84971222325&partnerID=8YFLogxK

U2 - 10.1002/2016GL069108

DO - 10.1002/2016GL069108

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AN - SCOPUS:84971222325

SN - 0094-8276

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SP - 4885

EP - 4892

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 10

ER -

Smectite deposits in Marathon Valley, Endeavour Crater, Mars, identified using CRISM hyperspectral reflectance data

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Keywords

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