Cold seep deposits of Beauvoisin (Oxfordian; southeastern France) and Marmorito (Miocene; northern Italy): microbially induced authigenic carbonates

被引:196
作者
Peckmann, J
Thiel, V
Michaelis, W
Clari, P
Gaillard, C
Martire, L
Reitner, J
机构
[1] Univ Gottingen, Inst & Museum Geol & Palaontol, D-37077 Gottingen, Germany
[2] Univ Hamburg, Inst Biogeochem & Meereschem, D-20146 Hamburg, Germany
[3] Dipartimento Sci Terra, I-10123 Turin, Italy
[4] Univ Lyon 1, Ctr Paleontol Stratig & Paleoecol, UMR 5565, UFR Sci Terre, F-69622 Villeurbanne, France
关键词
carbonates; cold seeps; methane; petroleum; Archaea; bacteria; sponges; tube worms; epifluorescence; biomarkers; Jurassic; tertiary; France; Italy;
D O I
10.1007/s005310050246
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
The relation of two well-known ancient carbonate deposits to hydrocarbon seepage was confirmed by this study. Archaea are found to be associated with the formation of Oxfordian seep carbonates from Beauvoisin and with a Miocene limestone from Marmorito ("tube-worm limestone"). Carbonates formed due to a mediation by archaea exhibit extremely positive or extremely negative delta(13)C(carbonate) values, respectively. Highly positive values (+15 parts per thousand) reflect the use of C-13-enriched CO2 produced by methanogenesis. Low delta(13)C values of the Marmorito carbonates (-30 parts per thousand) indicate the oxidation of seepage-derived hydrocarbons. Likewise, the delta(13)C content of specific tail-to-tail linked isoprenoids, biomarkers for archaea, was found to be strikingly depleted in these samples (as low as -115 parts per thousand). The isotopic signatures corroborate that archaea were involved in the cycling of seepage-derived organic carbon at the ancient localities, Another Miocene limestone ("Marmorito limestone") shows a strong imprint of methanotrophic bacteria as indicated by delta(13)C values of carbonate as low as -40 parts per thousand and biomarker evidence. Epifluorescence microscopy and field-emission scanning electron microscopy revealed that bacterial biofilms were involved in carbonate aggregation. In addition to lucinid bivalves previously reported from both localities, we infer that sponges from Beauvoisin and tube worms from Marmorito depended on chemosynthesis as well. Low delta(13)C values of nodules related to sponge taphonomy (-27 parts per thousand) indicate that sponges might have been linked to an enhanced hydrocarbon oxidation. Tube worm fossils from Marmorito closely resemble chemosynthetic pogonophoran tube worms from Recent cold seeps and are embedded in isotopically light carbonate (delta(13)C -30 parts per thousand).
引用
收藏
页码:60 / 75
页数:16
相关论文
共 68 条
[1]  
[Anonymous], 1988, B MUSEO REGIONALE SC
[2]   CONSTRAINTS ON THE FORMATION OF SEDIMENTARY DOLOMITE [J].
BAKER, PA ;
KASTNER, M .
SCIENCE, 1981, 213 (4504) :214-216
[3]  
BEAUCHAMP B, 1992, Palaios, V7, P434, DOI 10.2307/3514828
[4]   FLUORESCENCE OF SEDIMENTARY ORGANIC-MATTER IN RELATION TO ITS CHEMICAL-COMPOSITION [J].
BERTRAND, P ;
PITTION, JL ;
BERNAUD, C .
ORGANIC GEOCHEMISTRY, 1986, 10 (1-3) :641-647
[5]   A mass balance of C-13 and C-12 in an organic-rich methane-producing marine sediment [J].
Boehme, SE ;
Blair, NE ;
Chanton, JP ;
Martens, CS .
GEOCHIMICA ET COSMOCHIMICA ACTA, 1996, 60 (20) :3835-3848
[6]   DELTA8(14)-STEROIDS IN BACTERIUM METHYLOCOCCUS-CAPSULATUS [J].
BOUVIER, P ;
ROHMER, M ;
BENVENISTE, P ;
OURISSON, G .
BIOCHEMICAL JOURNAL, 1976, 159 (02) :267-271
[7]   SPECIFIC ACYCLIC ISOPRENOIDS AS BIOLOGICAL MARKERS OF METHANOGENIC BACTERIA IN MARINE-SEDIMENTS [J].
BRASSELL, SC ;
WARDROPER, AMK ;
THOMSON, ID ;
MAXWELL, JR ;
EGLINTON, G .
NATURE, 1981, 290 (5808) :693-696
[8]  
BRONNIMANN P., 1955, MICROPALEONTOLOGY, V1, P28, DOI 10.2307/1484409
[9]  
Bronnimann P., 1972, Palaontologische Zeitschrift, V46, P99, DOI DOI 10.1007/BF02989556
[10]   HABIT OF BACTERIALLY INDUCED PRECIPITATES OF CALCIUM-CARBONATE AND THE INFLUENCE OF MEDIUM VISCOSITY ON MINERALOGY [J].
BUCZYNSKI, C ;
CHAFETZ, HS .
JOURNAL OF SEDIMENTARY PETROLOGY, 1991, 61 (02) :226-233