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Shallow crustal composition of Mercury as revealed by spectral properties and geological units of two impact craters

D'Incecco, Piero and Helbert, Jörn and D'Amore, Mario and Maturilli, Alessandro and Head, J.W. and Klima, R. L. and Izenberg, N.R. and McClintock, W.E. and Hiesinger, H. and Ferrari, Sabrina (2015) Shallow crustal composition of Mercury as revealed by spectral properties and geological units of two impact craters. Planetary and Space Science (119), pp. 250-263. Elsevier. DOI: 10.1016/j.pss.2015.10.007 ISSN 0032-0633

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Official URL: http://www.sciencedirect.com/science/journal/00320633

Abstract

We have performed a combined geological and spectral analysis of two impact craters on Mercury: the 15 km diameter Waters crater (106°W; 9°S) and the 62.3 km diameter Kuiper crater (30°W; 11°S). Using the Mercury Dual Imaging System (MDIS) Narrow Angle Camera (NAC) dataset we defined and mapped several units for each crater and for an external reference area far from any impact related deposits. For each of these units we extracted all spectra from the MESSENGER Atmosphere and Surface Composition Spectrometer (MASCS) Visible-InfraRed Spectrograph (VIRS) applying a first order photometric correction. For all the mapped units, we analyzed the spectral slope in two wavelength ranges, 350-450 nm and 450-650 nm, and the absolute reflectance in the 700-750 nm range. Normalized spectra of Waters crater display a generally bluer spectral slope than the external reference area over both wavelength windows. Normalized spectra of Kuiper crater generally display a redder slope than the external reference area in the 350-450 nm window, while they display a bluer slope than the external reference area in the 450-650 nm wavelength range. The combined use of geological and spectral analyses enables reconstruction of the local scale stratigraphy beneath the two craters, providing insight into the properties of the shallower crust of Mercury. Kuiper crater, being ~4 times larger than Waters crater, exposes deeper layers with distinctive composition, while the result for Waters crater might indicate substantial compositional homogeneity with the surrounding intercrater plains, though we cannot exclude the occurrence of horizontal compositional heterogeneities in the shallow sub-surface.

Item URL in elib:https://elib.dlr.de/101749/
Document Type:Article
Title:Shallow crustal composition of Mercury as revealed by spectral properties and geological units of two impact craters
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
D'Incecco, Pieropiero.dincecco (at) dlr.deUNSPECIFIED
Helbert, JörnJoern.Helbert (at) dlr.dehttps://orcid.org/0000-0001-5346-9505
D'Amore, MarioMario.DAmore (at) dlr.dehttps://orcid.org/0000-0001-9325-6889
Maturilli, AlessandroAlessandro.Maturilli (at) dlr.deUNSPECIFIED
Head, J.W.Department of Geological Sciences, Brown University, Providence, RI, USAUNSPECIFIED
Klima, R. L.The Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723UNSPECIFIED
Izenberg, N.R.Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USAUNSPECIFIED
McClintock, W.E.Laboratory for Atmospheric and Space Physics, Boulder, CO, USAUNSPECIFIED
Hiesinger, H.Westfälische Wilhelms-Universität MünsterUNSPECIFIED
Ferrari, Sabrinasabrina.ferrari (at) dlr.deUNSPECIFIED
Date:December 2015
Journal or Publication Title:Planetary and Space Science
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1016/j.pss.2015.10.007
Page Range:pp. 250-263
Publisher:Elsevier
Series Name:Elsevier Planetary and Space Science
ISSN:0032-0633
Status:Published
Keywords:Mercury, MESSENGER, MASCS, MDIS, Impact craters, Stratigraphy
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Vorhaben BepiColombo (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Leitungsbereich PF
Deposited By: Maturilli, Alessandro
Deposited On:07 Jan 2016 09:47
Last Modified:31 Jul 2019 19:59

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