Concretions in exhumed and inverted channels near Hanksville Utah: implications for Mars

Details Concretions in exhumed and inverted channels near Hanksville Utah: implications for Mars Concretions in exhumed and inverted channels near Hanksville Utah: implications for Mars

Jul 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ijasb..10..161c&link_type=abstract

Special issue: Astrobiology field research in Moon/Mars analogue environments, Volume 10, Issue 3, p. 161-175

Biology

Mars Regolith, Geomorphology, Relief Inversion, Palaeochannels, Concretions

Scientific paper

The landscape near Hanksville, Utah, contains a diversity of Mars analogue features. These included segmented and inverted anastomosing palaeochannels exhumed from the Late Jurassic Brushy Basin Member of the Morrison Formation that hosts abundant small carbonate concretions. The exhumed and inverted channels closely resemble many seen on the surface of Mars in satellite imagery and which may be visited by surface missions in the near future. The channels contain a wealth of palaeoenvironmental information and are potentially of astrobiological interest, but intrinsically difficult terrain would make their study challenging on Mars. We show that an un-exhumed channel feature can be detected geophysically, and this may allow their study in more easily accessed terrain. The concretion's morphology and surface expression parallel the haematite ‘blue berries’ that are strewn across the surface of Meridiani Planum on Mars. They are best developed in poorly cemented medium to coarse channel sandstones and appear to have formed during deep burial.

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