Dark Dune Spots: Possible Biomarkers on Mars?

@article{Gnti2004DarkDS,
  title={Dark Dune Spots: Possible Biomarkers on Mars?},
  author={Tibor G{\'a}nti and Andr{\'a}s Jr. Horv{\'a}th and Sz. B{\'e}rczi and A. Gesztesi and E{\"o}rs Szathm{\'a}ry},
  journal={Origins of life and evolution of the biosphere},
  year={2004},
  volume={33},
  pages={515-557}
}
Dark Dune Spots (DDSs) are transitional geomorphologic formations in the frost-covered polar regions of Mars. Our analysis of the transformations and arrangements of subsequent stages of DDSs into time sequence revealed their: (i) hole-like characteristics,(ii) development and formation from the bottom of the frosted layer till the disapperance of the latter, (iii) repeated (seasonal and annual) appearance in a pattern of multiple DDSs on the surface, and (iv) probable origin. We focused our… 
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On Earth, surface detritus has a quartz-rich mineralogy as a consequence of plate tectonics. Rocky planets without plate tectonics, like Mars, have surface detritus derived from volcanic rocks. There
Hypothetical Time Sequence of the Morphological Changes in Global and Local Levels of the Dark Dune Spots in Polar Region of Mars
LOCAL LEVELS OF THE DARK DUNE SPOTS IN POLAR REGION OF MARS. Gánti T.(1), Sz. Bérczi (1,2), A. Horváth (1,3), A. Kereszturi (1,4), T. Pócs (1), A. Sik (1,4), E. Szathmáry (1,6); (1) Collegium
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References

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TLDR
The Dark Dune Spots of the southern polar region of Mars are analyzed on MGS MOC images to show that the formation of DDS begins from the bottom of the frost layer, at the frost/soil boundary.
Probable Evidences of Recent Biological Activity on Mars: Appearance and Growing of Dark Dune Spots in the South Polar Region
Morphological analysis of dark dune spots (DDSs) on the intracrater dark sand sheets in the southern polar region of Mars has led to a surprising conclusion. The most recently suggested process of
Spider-Ravine Models and Plant-like Features on Mars - Possible Geophysical and Biogeophysical Modes of Origin
1. Introduction MGS imaging has revealed that the South Polar region of Mars is littered with structures that exhibit the convincing characteristic appearance of trees and plants (Fig. 1a-i; Fig.
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We analyzed the Dark Dune Spots (DDSs) in the “Inca City” Region from more than 60 MGS MOC images. On high-resolution MOC images we followed the shape, pattern changes, fading and reappearance of
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TLDR
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Rill erosion on a dune slope in the Russell Crater dune field was detected on a high resolution Mars Orbiter Camera (MOC)-NA image from the latest public release of MOC-data (October, 2001). The
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