Encyclopedia of Astrobiology

Living Edition
| Editors: Muriel Gargaud, William M. Irvine, Ricardo Amils, Henderson James Cleaves, Daniele Pinti, José Cernicharo Quintanilla, Michel Viso

Dark Streaks (Mars)

  • Alessandro Airo
Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-27833-4_5092-1


Dark streaks is a general term for temporarily darkened surface patches occurring on various slopes on Mars (e.g., crater walls or dune faces) that display a range of morphologies (e.g., conical, linear, or braided). The darkening of the surface is believed to be caused by the removal of the surficial dust cover due to dry grain flow, wetting of the soil, or fluvial activity. Over the course of months and years, the dark coloration fades away, which is presumably the result of the surficial accumulation of bright dust particles and/or drying of the soil.

See Also


Bioorganic Chemistry General Term Dust Particle Dark Coloration Surface Patch 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Institut für Geologische Wissenschaften Tektonik und Sedimentäre Geologie, Fachbereich GeowissenschaftenFreie Universität BerlinBerlinGermany