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 d13C values as low as 37.5‰ 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 3.6e3.3 Ma and associated with the thrust-related “Salsomaggiore structure”.

The Pliocene-age Stirone River hydrocarbon chemoherm complex (Northern Apennines, Italy) / Cau, Simone; Franchi, F.; Roveri, Marco; Taviani, M.. - In: MARINE AND PETROLEUM GEOLOGY. - ISSN 0264-8172. - 66:(2015), pp. 582-595. [10.1016/j.marpetgeo.2015.05.027]

The Pliocene-age Stirone River hydrocarbon chemoherm complex (Northern Apennines, Italy)

CAU, Simone;ROVERI, Marco;
2015-01-01

Abstract

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 d13C values as low as 37.5‰ 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 3.6e3.3 Ma and associated with the thrust-related “Salsomaggiore structure”.
2015
The Pliocene-age Stirone River hydrocarbon chemoherm complex (Northern Apennines, Italy) / Cau, Simone; Franchi, F.; Roveri, Marco; Taviani, M.. - In: MARINE AND PETROLEUM GEOLOGY. - ISSN 0264-8172. - 66:(2015), pp. 582-595. [10.1016/j.marpetgeo.2015.05.027]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2796313
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