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

S. Cau; F. Franchi; M. Roveri; M. Taviani

doi:10.1016/j.marpetgeo.2015.05.027

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

S. Cau, F. Franchi, M. Roveri, M. Taviani

Earth & Environmental Sciences

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

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 δ¹³C 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 3.6-3.3 Ma and associated with the thrust-related "Salsomaggiore structure".

Original language	English
Pages (from-to)	582-595
Number of pages	14
Journal	Marine and Petroleum Geology
Volume	66
DOIs	https://doi.org/10.1016/j.marpetgeo.2015.05.027
Publication status	Published - Sept 1 2015

All Science Journal Classification (ASJC) codes

Oceanography
Geophysics
Geology
Economic Geology
Stratigraphy

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10.1016/j.marpetgeo.2015.05.027

Cite this

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AU - Taviani, M.

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AB - 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 δ13C 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 3.6-3.3 Ma and associated with the thrust-related "Salsomaggiore structure".

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

Abstract

All Science Journal Classification (ASJC) codes

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