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Identification of organic molecules with a laboratory prototype based on the Laser Ablation-CosmOrbitrap

Engrand, C.; Vuitton, V.; Briois, C. +18 more

In the Solar System, extra-terrestrial organic molecules have been found on cometary primitive objects, on Titan and Enceladus icy moons and on Mars. Identification could be achieved for simple organic species by remote sensing based on spectroscopic methods. However in situ mass spectrometry is a key technology to determine the nature of more com…

Formation of coarse sediment lags in ice-sediment mixtures: A geomorphic signature of sublimation on regolith surfaces

Levy, Joseph S.; Aylward, Daniel S.; Schmidt, Logan M.

In many high-latitude locations on Mars, boulder sized clasts are present at the ground surface atop finer-grained sediments. These areas are concentrated in the latitude dependent mantle (LDM), an ice-rich surface unit that is globally distributed polewards of ∼30° latitude. Here, we test the hypothesis that sublimation of buried ice can drive gr…