Landscapes of polyphase glaciation: eastern Hellas Planitia, Mars

Mars: Dust Devil Tracks in Hellas Basin and Argyre Planitia

Introduction: Dust devils on Mars could be an important mechanism for delivery of dust into the Martian atmosphere. Suspended dust in the Martian atmosphere is observed to be ~1-2μm in diameter [1,2,3] and calculations of fall-out rate [4,5] imply an ongoing supply of this fine dust to the atmosphere. Laboratory wind tunnel experiments [6,7], however, suggest that entrainment of fine dust into ...

Enhanced erosion rates on Mars during Amazonian glaciation

Keyword: Mars, surface Mars, climate Geological processes Observations of Mars from the surface and from orbit suggest that erosion rates over the last 3 Gyr (the Amazonian) have been as slow as 10 5 m/Myr and have been dominated by aeolian processes, while ancient (Noachian) erosion rates may have been orders of magnitude higher due to impact bombardment and fluvial activity. Amazonian-aged gl...

Geologic Framework and Glaciation of the Eastern Area

Scalloped Depression Development on Malea Planum and the Southern Wall of the Hellas Basin, Mars

Hellas Basin, Mars. M. Zanetti, H. Hiesinger, D. Reiss, E. Hauber, and G. Neukum. Institute für Planetologie, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany. 2 Institute of Planetary Research, German Aerospace Center (DLR), Rutherford Str. 2, 12489 Berlin, Germany. 3 Freie Universität Berlin, Maltese Str. 74 -100, 12249 Berlin, Germany. (ZanettiM@uni-mu...

Probing the Hidden Geology of Isidis Planitia (Mars) with Impact Craters

In this study we investigated Isidis Planitia, a 1325 km diameter multi-ring impact basin intersecting the Martian hemispheric dichotomy, located in the eastern hemisphere, between Syrtis Major and Utopia Planitia. From Mars Orbiter Laser Altimeter gridded data we observed that in the center of Isidis the −3700 m and −3800 m isolines strike NW-SE, being quasi-parallel to the diameter of the bas...