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Isotopically Heterogeneous Organic Matter in the Tagish Lake Meteorite

Introduction: The Tagish Lake meteorite is an ungrouped carbonaceous chondrite that represents some of the most primitive material available for study. It contains a high amount of organic carbon (~2.6 wt%), most of which is insoluble in polar solvents [1]. Like organic matter in other primitive meteorites , as well as in IDPs, Tagish Lake preserves hydrogen and nitrogen isotopic anomalies consistent with an interstellar or outer solar system origin [2, 3]. Hollow carbonaceous nanoglobules in Tagish Lake are argued to be the carriers of D and