In search of ancient biomarkers: Using femtosecond - Laser Desorption Post Ionization - Mass Spectrometry (fs-LDPI-MS) to map organic compounds within ca. 2.7 Ga samples from the Abitibi greenstone belt, Ontario, Canada

M Joseph Pasterski1, Grant Barry2, Luke Hanley2 and Fabien P H Kenig3, (1)NASA Goddard Space Flight Center, Greenbelt, United States, (2)University of Illinois at Chicago, Department of Chemistry, Chicago, IL, United States, (3)University of Illinois at Chicago, Department of Earth and Environmental Sciences, Chicago, IL, United States