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Very recent and wide-spread basaltic volcanism on Mars

Hauber, Ernst and Brož, Petr and Jagert, Felix and Jodłowski, Piotr and Platz, Thomas (2011) Very recent and wide-spread basaltic volcanism on Mars. Geophysical Research Letters, 38, L10201. Wiley. doi: 10.1029/2011GL047310.

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Official URL: http://europa.agu.org/?view=article&uri=/journals/gl/gl1110/2011GL047310/2011GL047310.xml&t=gl,Hauber


New spacecraft data provide increasing evidence for a dynamic environment on present�day Mars. Exogenic processes such as impact cratering, mass wasting processes, and active dune migration have all been observed to modify the surface. No traces of current endogenic activity have been found yet, but some studies point to very localized volcanism in the last few millions of years. However, no systematic study of young volcanic surfaces had been performed so far. We present absolute model age determinations of plains volcanism on Mars as derived from impact crater sizefrequency distributions. Extended areas in Tharsis, the largest volcano�tectonic region on Mars, have been resurfaced by lava flows in the last few tens of millions of years. We also present results on the rheologic properties of these lava flows, inferred from morphometric measurements. Yield strengths are in the range of 100�300 Pa, and viscosities reach values of 10^2 to 10^3 Pa s, indicating basaltic compositions. The results imply that Mars retained until recently, and probably still retains, enough internal heat to produce wide�spread plain�style volcanism, producing low�viscosity lava flows throughout large parts of Tharsis

Item URL in elib:https://elib.dlr.de/72045/
Document Type:Article
Title:Very recent and wide-spread basaltic volcanism on Mars
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Brož, PetrInstitute of Geophysics, ASCR, PragueUNSPECIFIEDUNSPECIFIED
Jagert, FelixGeographisches Institut, Ruhr‐Universität BochumUNSPECIFIEDUNSPECIFIED
Jodłowski, PiotrFreie Universität BerlinUNSPECIFIEDUNSPECIFIED
Platz, ThomasFreie Universität BerlinUNSPECIFIEDUNSPECIFIED
Journal or Publication Title:Geophysical Research Letters
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:L10201
Keywords:Mars, volcanism, chronology, lava, shield volcanoes, Tharsis, rheology, viscosity
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Projekt MARS-EXPRESS / HRSC (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Geology
Deposited By: Hauber, Ernst
Deposited On:08 Dec 2011 15:18
Last Modified:08 Mar 2018 18:29

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