Ice-enriched Loess and the Formation of Periglacial Terrain in Mid-utopia
نویسنده
چکیده
Introduction: In recent work [1-3] we used all relevant HiRISE (High Resolution Imaging Science Experiment), MOC (Mars Orbiter Camera), THEMIS (Thermal Emission Imaging System) and CTX (Context Camera) images in mid Utopia Planitia (UP; ~3060 0 N; Fig. 1) to map flat-floored and scalloped depressions, small-sized (~150m) polygonal patternedground and polygon-junction/trough pits (Fig. 2a). On Earth, similar landscape-assemblages are periglacial in origin and indicative of ice-rich permafrost (ground that is permanently frozen for at least two years) [4-5] (Fig. 2b).
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