24th February 2017 – Sol 1620

We have been examining Ireson Hill and found this unusual 10-15 cm diameter rock- called Passagassawakakeag !

The shape is an almost perfect Dreikanter.  That’s a German word  for a sample in desert or periglacial environments formed by the abrasion of blown sand. Dreikanters typically have a pyramid shape with flat wind-abraded facets.

 

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jbridges

About jbridges

This blog is a record of my experiences and work during the Mars Science Laboratory mission, from the preparation, landing on August 5th 2012 Pacific Time, and onwards... I will also post updates about our other Mars work on meteorites, ExoMars and new missions. You can also follow the planetary science activities with @LeicsPlanets Professor John Bridges, Leicester Institute for Space and Earth Observation, Dept. of Physics and Astronomy (PS. Previous posts in this blog can be found at: http://www2.le.ac.uk/departments/physics/research/src/res/planetary-science/mslblog)

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