Archaeal lipids in Neogene dolomites (Monterey and Sisquoc Formations, California) - Planktic versus benthic archaeal sources

► Dolomite rocks with positive δ13C values contain various euryarchaeal biomarkers. ► GDGTs derive from both planktic and benthic archaea. ► Archaeol in dolomite represents a biomarker for benthic euryarchaea. ► Dolomite rocks formed during diagenesis in the methanogenesis zone.