elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Geology, geochemistry, and geophysics of the Moon: Status of current understanding

Jaumann, R. and Hiesinger, H. and Anand, M. and Crawford, I.A. and Wagner, R. and Sohl, F. and Jolliff, B.L. and Scholten, F. and Knapmeyer, Martin and Hoffmann, H. and Hussmann, H. and Grott, M. and Hempel, S. and Köhler, U. and Krohn, Katrin and Schmitz, Nicole and Carpenter, J. and Wieczorek, M.A. and Spohn, Tilman and Robinson, M.S. and Oberst, J. (2012) Geology, geochemistry, and geophysics of the Moon: Status of current understanding. Planetary and Space Science, 74 (1), pp. 15-41. Elsevier. DOI: 10.1016/j.pss.2012.08.019

[img] PDF - Registered users only
3MB

Official URL: http://www.sciencedirect.com/science/article/pii/S0032063312002565#

Abstract

The Moon is key to understanding both Earth and our Solar System in terms of planetary processes and has been a witness of the Solar System history for more than 4.5 Ga. Building on earlier telescopic observations, our knowledge about the Moon was transformed by the wealth of information provided by Apollo and other space missions. These demonstrated the value of the Moon for understanding the fundamental processes that drive planetary formation and evolution. The Moon was understood as an inert body with its geology mainly restricted to impact and volcanism with associated tectonics, and a relative simple composition. Unlike Earth, an absence of plate tectonics has preserved a well-defined accretion and geological evolution record. However recent missions to the Moon show that this traditional view of the lunar surface is certainly an over simplification. For example, although it has long been suspected that ice might be preserved in cold traps at the lunar poles, recent results also indicate the formation and retention of OH� and H2O outside of polar regions. These volatiles are likely to be formed as a result of hydration processes operating at the lunar surface including the production of H2O and OH by solar wind protons interacting with oxygen-rich rock surfaces produced during micrometeorite impact on lunar soil particles. Moreover, on the basis of Lunar Prospector gamma-ray data, the lunar crust and underlying mantle has been found to be divided into distinct terranes that possess unique geochemical, geophysical, and geological characteristics. The concentration of heat producing elements on the nearside hemisphere of the Moon in the Procellarum KREEP Terrane has apparently led to the nearside being more volcanically active than the farside. Recent dating of basalts has shown that lunar volcanism was active for almost 3 Ga, starting at about 3.9�4.0 Ga and ceasing at �1.2 Ga. A recent re-processing of the seismic data supports the presence of a partially molten layer at the base of the mantle and shows not only the presence of a 330 km liquid core, but also a small solid inner core. Today, the Moon does not have a dynamo-generated magnetic field like that of the Earth. However, remnant magnetization of the lunar crust and the paleomagnetic record of some lunar samples suggest that magnetization was acquired, possibly from an intrinsic magnetic field caused by an early lunar core dynamo. In summary, the Moon is a complex differentiated planetary object and much remains to be explored and discovered, especially regarding the origin of the Moon, the history of the Earth�Moon system, and processes that have operated in the inner Solar System over the last 4.5 Ga. Returning to the Moon is therefore the critical next stepping-stone to further exploration and understanding of our planetary neighborhood.

Item URL in elib:https://elib.dlr.de/80196/
Document Type:Article
Title:Geology, geochemistry, and geophysics of the Moon: Status of current understanding
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Jaumann, R.ralf.jaumann (at) dlr.deUNSPECIFIED
Hiesinger, H.Institute of Planetology,Westfälische Wilhelms-University Münster, GermanyUNSPECIFIED
Anand, M.Planetary and Space Sciences,The Open University, Milton Keynes, UKUNSPECIFIED
Crawford, I.A.Department of Earth and Planetary Sciences, Birkbeck College, London, UKUNSPECIFIED
Wagner, R.roland.wagner (at) dlr.deUNSPECIFIED
Sohl, F.frank.sohl (at) dlr.deUNSPECIFIED
Jolliff, B.L.Dept. Earth & Planetary Sciences and McDonnell Center for the Space Sciences, Washington University, One Brookings Drive, St. Louis, MO 63130UNSPECIFIED
Scholten, F.frank.scholten (at) dlr.deUNSPECIFIED
Knapmeyer, MartinMartin.Knapmeyer (at) dlr.dehttps://orcid.org/0000-0003-0319-2514
Hoffmann, H.German Aerospace Center (DLR), Institute of Planetary Research Berlin, GermanyUNSPECIFIED
Hussmann, H.hauke.hussmann (at) dlr.deUNSPECIFIED
Grott, M.matthias.grott (at) dlr.deUNSPECIFIED
Hempel, S.Institute of Geophysics, Westfälische Wilhelms-University Münster, GermanyUNSPECIFIED
Köhler, U.ulrich.koehler (at) dlr.deUNSPECIFIED
Krohn, Katrinkatrin.krohn (at) dlr.dehttps://orcid.org/0000-0001-8518-4985
Schmitz, NicoleNicole.Schmitz (at) dlr.deUNSPECIFIED
Carpenter, J.ESA-ESTEC, 2201 AZ, Noordwijk, The NetherlandsUNSPECIFIED
Wieczorek, M.A.Institut de Physique du Globe de Paris, FranceUNSPECIFIED
Spohn, TilmanTilman.Spohn (at) dlr.deUNSPECIFIED
Robinson, M.S.Arizona State UniversityUNSPECIFIED
Oberst, J.Juergen.Oberst (at) dlr.deUNSPECIFIED
Date:December 2012
Journal or Publication Title:Planetary and Space Science
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:74
DOI :10.1016/j.pss.2012.08.019
Page Range:pp. 15-41
Publisher:Elsevier
Status:Published
Keywords:Moon, Exploration, scienfitic results
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 Exploration des Sonnensystems
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research
Institute of Planetary Research > Planetary Geology
Deposited By: Aydin, Zeynep
Deposited On:09 Jan 2013 08:47
Last Modified:01 Dec 2018 19:48

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.