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Collection:
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NASA Mars Collecton
Collection
NASA Mars Collecton
Collection
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title:
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Lyot Crater
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Description:
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Martian 'fretted terrain' occurs in regions of buttes and mesas that stand at the erosional margin where northern low-lying plains meet the higher-standing cratered uplands. Found mostly in the mid-northern latitudes, some of the best examples of fretted terrain occur in Deuteronilus Mensae. Here, the interaction of the process that creates the mesas and buttes, the processes that modify these surfaces after they form, and the relationship of both of these processes with the 'near-instantaneous' event that formed the large crater Lyot, provide us places to look to decipher this small but important piece of martian geological history. Part of that effort requires us to acquire compositional information--from the Mars Global Surveyor Thermal Emission Spectrometer (TES), from the Thermal Infrared Mapping Spectrometer (THEMIS) and Gamma Ray Spectrometer (GRS) on the 2001 Mars Odyssey mission, and from color images such as these taken by Mars Global Surveyor's Mars Orbiter Camera. Subtle and not-so-subtle color variations seen in this composite of MOC images M23-01279 and M23-01280 (acquired January 19, 2001) trace both the movement of dark sand of possible volcanic origin and fresh, dark outcrops of unweathered bedrock.
Photo Credit: NASA/JPL/Malin Space Science Systems
Description
Martian 'fretted terrain' occurs in regions of buttes and mesas that stand at the erosional margin where northern low-lying plains meet the higher-standing cratered uplands. Found mostly in the mid-northern latitudes, some of the best examples of fretted terrain occur in Deuteronilus Mensae. Here, the interaction of the process that creates the mesas and buttes, the processes that modify these surfaces after they form, and the relationship of both of these processes with the 'near-instantaneous' event that formed the large crater Lyot, provide us places to look to decipher this small but important piece of martian geological history. Part of that effort requires us to acquire compositional information--from the Mars Global Surveyor Thermal Emission Spectrometer (TES), from the Thermal Infrared Mapping Spectrometer (THEMIS) and Gamma Ray Spectrometer (GRS) on the 2001 Mars Odyssey mission, and from color images such as these taken by Mars Global Surveyor's Mars Orbiter Camera. Subtle and not-so-subtle color variations seen in this composite of MOC images M23-01279 and M23-01280 (acquired January 19, 2001) trace both the movement of dark sand of possible volcanic origin and fresh, dark outcrops of unweathered bedrock.
Photo Credit: NASA/JPL/Malin Space Science Systems
Description
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section:
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Craters
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facet_what:
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Mars
facet_what
Mars
facet_what
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facet_what:
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Surveyor
facet_what
Surveyor
facet_what
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facet_what:
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TRACE
facet_what
TRACE
facet_what
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facet_what:
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Crater
facet_what
Crater
facet_what
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facet_what:
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2001 Mars Odyssey
facet_what
2001 Mars Odyssey
facet_what
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facet_what:
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Spectrometer
facet_what
Spectrometer
facet_what
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facet_what:
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TES
facet_what
TES
facet_what
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facet_what:
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crater
facet_what
crater
facet_what
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facet_what:
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Mars Global Surveyor Orbiter (MGS)
facet_what
Mars Global Surveyor Orbiter (MGS)
facet_what
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facet_what:
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Mars Orbiter Camera (MOC)
facet_what
Mars Orbiter Camera (MOC)
facet_what
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facet_where:
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Mars
facet_where
Mars
facet_where
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facet_where:
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Jet Propulsion Laboratory (JPL)
facet_where
Jet Propulsion Laboratory (JPL)
facet_where
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facet_when:
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January 19, 2001
facet_when
January 19, 2001
facet_when
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facet_when_year:
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2001
facet_when_year
2001
facet_when_year
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UID:
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SPD-MARS-gallery/cra ters/PIA03209.html
UID
SPD-MARS-gallery/cra ters/PIA03209.html
UID
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original url:
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original_url
original url
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