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The Pliocene-age Stirone River hydrocarbon chemoherm complex (Northern Apennines, Italy)
被引:26
|作者:
Cau, S.
[1
]
Franchi, F.
[2
,3
]
Roveri, M.
[1
]
Taviani, M.
[2
,4
]
机构:
[1] Univ Parma, Dipartimento Fis & Sci Terra, I-43124 Parma, Italy
[2] CNR, Ist Sci Marine ISMAR, I-40129 Bologna, Italy
[3] Botswana Int Univ Sci & Technol, Dept Earth & Environm Sci, Palapye, Botswana
[4] Woods Hole Oceanog Inst, Dept Biol, Woods Hole, MA 02543 USA
关键词:
Hydrocarbon;
Carbonates;
Chimneys;
Pliocene;
Deep water;
Apennines;
Italy;
Mediterranean basin;
AUTHIGENIC CARBONATES;
SEEP-CARBONATES;
METHANE;
GULF;
SEDIMENTS;
CHIMNEYS;
NEOGENE;
SECTION;
SYSTEM;
RECORD;
D O I:
10.1016/j.marpetgeo.2015.05.027
中图分类号:
P [天文学、地球科学];
学科分类号:
07 ;
摘要:
The Stirone River section in the Italian Northern Apennines hosts a rare example of Pliocene age hydrocarbon-imprinted carbonates in the Mediterranean Basin associated with deep-water hemipelagic lithologies. These include meter-sized, dolomite-cemented chimneys, micritic brecciated limestones, lucina-mudstones and chemosymbiotic bivalve shells. Some such chimneys show delta C-13 values as low as -37.5 parts per thousand VPDB, suggesting subsurface precipitation of authigenic dolomite induced by anaerobic oxidation of methane triggered by consortia of sulphate reducing bacteria. These carbonates are interpreted as part of the plumbing system related to hydrocarbon expulsion onto the seafloor, resulting from hydrocarbon-enriched defluidization processes dated at an interval at 3.6-3.3 Ma and associated with the thrust-related "Salsomaggiore structure". (C) 2015 Elsevier Ltd. All rights reserved.
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页码:582 / 595
页数:14
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