Extreme deuterium excesses in ultracarbonaceous micrometeorites from central Antarctic snow.


Primitive interplanetary dust is expected to contain the earliest solar system components, including minerals and organic matter. We have recovered, from central Antarctic snow, ultracarbonaceous micrometeorites whose organic matter contains extreme deuterium (D) excesses (10 to 30 times terrestrial values), extending over hundreds of square micrometers. We… (More)
DOI: 10.1126/science.1184832


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