Karst Landforms as Possible Lithological and Paleo-Climatic Markers in an Unnamed Crater in Northern Sinus Meridiani, Mars
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This paper describes the possible karst landforms observed in the Light Toned Deposits (LTDs) located within an unnamed crater in northern Sinus Meridiani, an area located in the equatorial region of Mars. Morphological and morphometric surveys of the LTDs surface morphologies through an integrated analysis of the available images from the High Resolution Imaging Science Experiment (HiRISE) instrument on the Mars Reconnaissance Orbiter (MRO) were performed. The Martian landforms interpreted as a doline of karst origin resemble closely karst landforms that can be observed both in different karst terrains on Earth and in other regions of Mars. The karst landforms observed highlight the evaporitic origin of these materials and suggest a climatic change and the presence of liquid water, probably due to ice melting, during the late Amazonian age.
KeywordsMars Sinus meridiani Karst landforms Evaporate deposits Climate change
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