%0 Journal article %A Thiel, Volker %A Peckmann, Jörn %A Seifert, Richard %A Wehrung, Patrick %A Reitner, Joachim %A Michaelis, Walter %T Highly isotopically depleted isoprenoids %O molecular markers for ancient methane venting %R 10.23689/fidgeo-845 %J Geochimica et cosmochimica acta %V 63 %N 23/24 %U http://hdl.handle.net/11858/00-1735-0000-0001-3404-D %~ FID GEO-LEO e-docs