TY - JOUR A1 - Thiel, Volker A1 - Peckmann, Jörn A1 - Seifert, Richard A1 - Wehrung, Patrick A1 - Reitner, Joachim A1 - Michaelis, Walter T1 - Highly isotopically depleted isoprenoids T1 - molecular markers for ancient methane venting Y1 - 1999 VL - 63 IS - 23/24 SP - 3959 EP - 3966 JF - Geochimica et cosmochimica acta DO - 10.23689/fidgeo-845 UR - http://hdl.handle.net/11858/00-1735-0000-0001-3404-D ER -