Results 161 to 170 of about 1,166 (187)

Evidence, Age, and Thickness of a Frozen Paleolake in Utopia Planitia, Mars

Icarus, 1994
Recent mapping studies west of Elysium Mons, Mars, have pinpointed subice features that suggest the existence of a frozen paleolake in Utopia Planitia as recently as 1.8 billion years ago. The subice features are interpreted to be hyaloclastic ridges and hills, table moutains, associated joekulhalaup deposits, and fluvial channels.
openaire   +2 more sources

The Tuktoyaktuk Coastlands of northern Canada: A possible “wet” periglacial analog of Utopia Planitia, Mars

2011
International ...
Soare, R.J., Séjourné, A., Pearce, G., Costard, F., Osinski, G.R.   +4 more
openaire   +4 more sources

Mud flows in southwestern Utopia Planitia, Mars

Icarus, 2023
Cuřín, Vojtěch, Broz, P., Hauber, Ernst, Markonis, Y.   +3 more
openaire   +1 more source

Scalloped depressions and small-sized polygons in western Utopia Planitia, Mars: A new formation hypothesis

Planetary and Space Science, 2011
Abstract Flat-floored depressions with scalloped-shapes and spatially associated small-sized polygons ...
Séjourné, A., Costard, F., Gargani, J., Soare, R.J., Fedorov, A., Marmo, C.   +5 more
openaire   +4 more sources

Mud volcanism and morphology of impact craters in Utopia Planitia on Mars: Evidence for the ancient ocean

Icarus, 2014
Abstract Results of our detailed geological mapping and interpretation of the nature and relative and absolute model ages of units and structures in the SW portion of Utopia Planitia (20–45°N, 100–120°E) suggest the following. (1) The size–frequency distribution (SFD) of craters that both are buried by materials of the Vastitas Borealis units (VB ...
Harald Hiesinger, Dennis Reiss, Mikhail A. Ivanov, Mikhail A. Ivanov, G. Erkeling   +4 more
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Modeling concentric crater fill in Utopia Planitia, Mars, with an ice flow line model

Icarus, 2018
Abstract Impact craters in the mid-latitudes of Mars are commonly filled to variable degrees with some combination of ice, dust, and rocky debris. Concentric surface features visible in these craters have been linked to debris transportation and glacial and periglacial processes.
Gordon R. Osinski, Michael Zanetti, N. Weitz, J. L. Fastook   +3 more
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POSSIBLE PINGO & ICE WEDGE/THERMOKARST COMPLEXES IN UTOPIA PLANITIA, MARS

2019
International ...
Soare, Richard, Conway, Susan J., Williams, J-P, Gallagher, C., Mc Keown, L   +4 more
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Martian thermal-contraction polygons as sounders of subsurface properties in Utopia Planitia

On Earth, temperature decreases can cause the thermal contraction of ice-cemented ground. This forms polygonal networks of surficial fractures – called ‘thermal-contraction polygons’ (Washburn, 1956). Polygons exhibit different morphologies with time (Black, 1954): initially showing no relief (‘flat-centred ...
Susan Conway, Meven Philippe, Richard Soare, Lauren McKeown   +3 more
openaire   +1 more source

The polygon junction pits as an evidence of a particularly ice-rich area in Utopia Planitia

2010
International ...
Séjourné, A., Costard, F., Gargani, J., Soare, R.J., Marmo, C.   +4 more
openaire   +2 more sources

POSSIBLE ICE-WEDGE POLYGONS IN UTOPIA PLANITIA, MARS, AND THEIR POLEWARD LATITUDINAL GRADIENT

2019
International audience; Introduction: Here, we describe and evaluate: a) the presence and distribution in Utopia Planitia (UP), Mars (40-50 o N, 110-124 o E), of small-sized polygons , (10-25 m in diameter), with low centres (lcps) or high centres (hcps) relative to their margins; b) the spatial , perhaps periglacial, association of these polygons ...
Soare, R.J., Conway, Susan J., Mc Keown, L, Williams, J-P, Godin, E, Hawkswell, J   +5 more
openaire   +2 more sources