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Igneous dikes on Mars revealed by Mars Orbiter Laser Altimeter topography

The origin of Martian grabens has remained controversial for decades, given the nonuniqueness of graben morphology and conflicting interpretations of dike-induced or faulting-based formation processes. We use measurements from the Mars Orbiter Laser Altimeter to identify the characteristic topograph...

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Published in:	Geology (Boulder) 2004-10, Vol.32 (10), p.889-892
Main Authors:	Schultz, Richard A, Okubo, Chris H, Goudy, Cheryl L, Wilkins, Scott J
Format:	Article
Language:	English
Subjects:	Cartography collapse structures dikes Extraterrestrial geology faults fissures Geology grabens igneous rocks intrusions Mars MOLA planets remote sensing Rocks systems tectonics terrestrial planets Tharsis topography
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description	The origin of Martian grabens has remained controversial for decades, given the nonuniqueness of graben morphology and conflicting interpretations of dike-induced or faulting-based formation processes. We use measurements from the Mars Orbiter Laser Altimeter to identify the characteristic topographic signature at the surface of an igneous dike beneath a Martian graben. Our results suggest that this subtle but diagnostic signature can be used to test competing interpretations of the formation of grabens and associated fissures and collapse depressions.
doi_str_mv	10.1130/G20548.1
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source	AUTh Library subscriptions: Society of Exploration Geophysicists
subjects	Cartography collapse structures dikes Extraterrestrial geology faults fissures Geology grabens igneous rocks intrusions Mars MOLA planets remote sensing Rocks systems tectonics terrestrial planets Tharsis topography
title	Igneous dikes on Mars revealed by Mars Orbiter Laser Altimeter topography
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