Equatorial layered deposits in Arabia Terra, Mars: Facies and process variability
نویسندگان
چکیده
منابع مشابه
Layered mantling deposits in northeast Arabia Terra, Mars: Noachian-Hesperian sedimentation, erosion, and terrain inversion
[1] Thick, layered mantling deposits of different ages occur in several nonpolar regions of Mars and are thought to represent volcanic ash and/or climate-related ice-dust deposition. One such deposit is a layered mantling unit that unconformably blanketed highlands terrain in northeast Arabia Terra during the Late Noachian and/or earliest Hesperian. Shortly thereafter, by the mid-Hesperian, thi...
متن کاملLayered Mantle Deposits in Northeast Arabia Terra, Mars: Ii. Models for Noachian-hesperian Sedimentation, Erosion and Terrain Inversion
Introduction: The thick mantle material in the etched unit (Nple) and dissected unit (Npld) of in northeast
متن کاملLayered Mantle Deposits in Northeast Arabia Terra, Mars: I. Observations of Noachian-hesperian Sedimentation, Erosion and Terrain Inversion
Introduction and Background: Northeast Arabia Terra, west and north of Syrtis Major, has long been known to be characterized by significant terrain mantling and exhumation [1-3]. There are two widespread geological units at a scale of 1:15M [1]: dissected terrain (Npld; more highly dissected by valley networks (VN) than cratered unit; covers extensive area S and W of Syr-tis Major, interpreted ...
متن کاملAncient Hydrothermal Springs in Arabia Terra , Mars
Introduction: Hydrothermal springs are important astrobiological sites for several reasons: 1) On Earth, molecular phylogeny suggests that many of the most primitive organisms are hyperthermophiles, implying that life on this planet may have arisen in hydrothermal settings [1-3]; 2) on Mars, similar settings would have supplied energyand nutrient-rich waters in which early martian life may have...
متن کاملDensity of Mars' south polar layered deposits.
Both poles of Mars are hidden beneath caps of layered ice. We calculated the density of the south polar layered deposits by combining the gravity field obtained from initial results of radio tracking of the Mars Reconnaissance Orbiter with existing surface topography from the Mars Orbiter Laser Altimeter on the Mars Global Surveyor spacecraft and basal topography from the Mars Advanced Radar fo...
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ژورنال
عنوان ژورنال: Geological Society of America Bulletin
سال: 2015
ISSN: 0016-7606,1943-2674
DOI: 10.1130/b31225.1