Paris VI-VII . This research is funded by the CNRS-INSU . The study of the isotopic signature of N preserved in K-bearing minerals in Archean sediments can give constraints on ancient biological activity. I am presently studying the N isotopic signature in K-bearing minerals separated from 3.8 Ga turbitides and metapelites from West Greenland. N release patterns in 3.8 Ga Isukasia biotite.
Bars represent N amount released at each temperature fraction.
This research is actually funded by a grant of the French Ministry of Research .