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Surface Processes Recorded by Rocks and Soils on Meridiani Planum, Mars: Microscopic Imager Observations During Opportunity's First Three Extended Missions

Knoll, Andrew ; Torson, James M ; Sullivan, Rob ; Sucharski, Tracie ; Sucharski, Robert M ; Stolper, Daniel ; Squyres, Steve W ; Springer, Richard ; Spanovich, Nicole ; Soderblom, Laurence A ; Sims, MIchael H ; Rosiek, Mark R ; Redding, Bonnie L ; Parker, Timothy J ; Mullins, Kevin F ; Maki, Justin N ; Leff, Craig ; Lee, Ella Mae ; Lanagan, Peter ; Kirk, Randolph L ; Keszthelyi, Laszlo ; Johnson, Jeffrey R ; Howington-Kraus, Elpitha ; Hare, Trent M ; Geissler, Paul ; Garcia, Patricia A ; Galuszka, Donna M ; Gaddis, Lisa R ; Franklin, Brenda ; Ehlmann, Bethany ; Cook, Debbie ; Chapman, Mary G ; Budney, Charles ; Bell, James F. III ; Becker, Kris J ; Barrett, Janet M ; Arvidson, Raymond E ; Archinal, Brent A ; Anderson, Robert ; Yingst, Aileen ; Weitz, Catherine ; McLennan, Scott M ; Grotzinger, John P ; Herkenhoff, Ken E

American Geophysical Union 2008

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Título:
Surface Processes Recorded by Rocks and Soils on Meridiani Planum, Mars: Microscopic Imager Observations During Opportunity's First Three Extended Missions
Autor: Knoll, Andrew ; Torson, James M ; Sullivan, Rob ; Sucharski, Tracie ; Sucharski, Robert M ; Stolper, Daniel ; Squyres, Steve W ; Springer, Richard ; Spanovich, Nicole ; Soderblom, Laurence A ; Sims, MIchael H ; Rosiek, Mark R ; Redding, Bonnie L ; Parker, Timothy J ; Mullins, Kevin F ; Maki, Justin N ; Leff, Craig ; Lee, Ella Mae ; Lanagan, Peter ; Kirk, Randolph L ; Keszthelyi, Laszlo ; Johnson, Jeffrey R ; Howington-Kraus, Elpitha ; Hare, Trent M ; Geissler, Paul ; Garcia, Patricia A ; Galuszka, Donna M ; Gaddis, Lisa R ; Franklin, Brenda ; Ehlmann, Bethany ; Cook, Debbie ; Chapman, Mary G ; Budney, Charles ; Bell, James F. III ; Becker, Kris J ; Barrett, Janet M ; Arvidson, Raymond E ; Archinal, Brent A ; Anderson, Robert ; Yingst, Aileen ; Weitz, Catherine ; McLennan, Scott M ; Grotzinger, John P ; Herkenhoff, Ken E
Notas: http://www.planetary.brown.edu/pdfs/3768.pdf
Journal of Geophysical Research Planets
http://dx.doi.org/10.1029/2008JE003100
Descrição: The Microscopic Imager (MI) on the Mars Exploration Rover Opportunity has returned images of Mars with higher resolution than any previous camera system, allowing detailed petrographic and sedimentological studies of the rocks and soils at the Meridiani Planum landing site. Designed to simulate a geologist's hand lens, the MI is mounted on Opportunity's instrument arm and can resolve objects 0.1 mm across or larger. This paper provides an overview of MI operations, data calibration, and analysis of MI data returned during the first 900 sols (Mars days) of the Opportunity landed mission. Analyses of Opportunity MI data have helped to resolve major questions about the origin of observed textures and features. These studies support eolian sediment transport, rather than impact surge processes, as the dominant depositional mechanism for Burns formation strata. MI stereo observations of a rock outcrop near the rim of Erebus Crater support the previous interpretation of similar sedimentary structures in Eagle Crater as being formed by surficial flow of liquid water. Well-sorted spherules dominate ripple surfaces on the Meridiani plains, and the size of spherules between ripples decreases by about 1 mm from north to south along Opportunity's traverse between Endurance and Erebus craters.
Editor: American Geophysical Union
Data de criação/publicação: 2008
Idioma: Inglês

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Surface Processes Recorded by Rocks and Soils on Meridiani Planum, Mars: Microscopic Imager Observations During Opportunity's First Three Extended Missions

American Geophysical Union 2008

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