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Non-mare silicic volcanism on the lunar farside at Compton–Belkovich

Jolliff, Bradley L. und Wiseman, Sandra, A. und Lawrence, Samuel J. und Tran, Thanh N. und Robinson, Mark S. und Sato, Hiroyuki und Hawke, B. Ray und Scholten, Frank und Oberst, Jürgen und Hiesinger, Harald und Bogert, Carolyn H. van der und Greenhagen, Benjamin T. und Glotch, Tomothy D. und Paige, David A. (2011) Non-mare silicic volcanism on the lunar farside at Compton–Belkovich. Nature Geoscience, 4, Seiten 566-571. DOI: 10.1038/ngeo1212.

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Offizielle URL: http://www.nature.com/ngeo/journal/v4/n8/full/ngeo1212.html

Kurzfassung

Non-basaltic volcanism is rare on the Moon. The best known examples occur on the lunar nearside in the compositionally evolved Procellarum KREEP terrane. However, there is an isolated thorium-rich area—the Compton–Belkovich thorium anomaly—on the lunar farside for which the origin is enigmatic. Here we use images from the Lunar Reconnaissance Orbiter Cameras, digital terrain models and spectral data from the Diviner lunar radiometer to assess the morphology and composition of this region. We identify a central feature, 25 by 35 km across, that is characterized by elevated topography and relatively high reflectance. The topography includes a series of domes that range from less than 1 km to more than 6 km across, some with steeply sloping sides. We interpret these as volcanic domes formed from viscous lava. We also observe arcuate to irregular circular depressions, which we suggest result from collapse associated with volcanism. We find that the volcanic feature is also enriched in silica or alkali-feldspar, indicative of compositionally evolved, rhyolitic volcanic materials. We suggest that the Compton–Belkovich thorium anomaly represents a rare occurrence of non-basaltic volcanism on the lunar farside. We conclude that compositionally evolved volcanism did occur far removed from the Procellarum KREEP terrane.

Dokumentart:Zeitschriftenbeitrag
Titel:Non-mare silicic volcanism on the lunar farside at Compton–Belkovich
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Jolliff, Bradley L.Department of Earth and Planetary Sciences and the McDonnell Center for the Space Sciences, Washington University, One Brookings Drive, St Louis, Missouri 63130, USA
Wiseman, Sandra, A.Department of Geological Sciences, Brown University, Providence, Rhode Island 02912, USA
Lawrence, Samuel J.School of Earth and Space Exploration, Box 871404, Arizona State University, Tempe, Arizona 85287, USA
Tran, Thanh N.School of Earth and Space Exploration, Box 871404, Arizona State University, Tempe, Arizona 85287, USA
Robinson, Mark S.School of Earth and Space Exploration, Box 871404, Arizona State University, Tempe, Arizona 85287, USA
Sato, HiroyukiSchool of Earth and Space Exploration, Box 871404, Arizona State University, Tempe, Arizona 85287, USA
Hawke, B. RayHawaii Institute of Geophysics and Planetology, University of Hawaii, Honolulu, Hawaii 96822, USA
Scholten, Frankfrank.scholten@dlr.de
Oberst, Jürgenjuergen.oberst@dlr.de
Hiesinger, HaraldInstitut für Planetologie, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Str. 10, 48149 Muenster, Germany
Bogert, Carolyn H. van derInstitut für Planetologie, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Str. 10, 48149 Muenster, Germany
Greenhagen, Benjamin T.Jet Propulsion Laboratory, 4800 Oak Grove Drive, M/S 183-301, Pasadena, California 91109, USA
Glotch, Tomothy D.Department of Geosciences, Stony Brook University, Stony Brook, New York 11794, USA
Paige, David A.Department of Earth and Space Sciences, University of California, Los Angeles, California 90095, USA
Datum:24 Juli 2011
Erschienen in:Nature Geoscience
Referierte Publikation:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:4
DOI :10.1038/ngeo1212
Seitenbereich:Seiten 566-571
Status:veröffentlicht
Stichwörter:Non-basaltic volcanism, Moon, LRO LROC
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EW - Erforschung des Weltraums
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EW - Erforschung des Weltraums
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Exploration des Sonnensystems (alt)
Standort: Berlin-Adlershof
Institute & Einrichtungen:Institut für Planetenforschung > Planetengeodäsie
Hinterlegt von: Dipl.-Ing. Frank Scholten
Hinterlegt am:10 Jan 2012 10:21
Letzte Änderung:04 Apr 2013 16:34

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