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

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

    Research output: Contribution to journalArticle

    10 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 languageEnglish
    Pages (from-to)582-595
    Number of pages14
    JournalMarine and Petroleum Geology
    Volume66
    DOIs
    Publication statusPublished - Sep 1 2015

    Fingerprint

    Italy
    rivers
    chimneys
    Pliocene
    hydrocarbons
    hydrocarbon
    dolomite
    carbonates
    river
    carbonate
    expulsion
    lithology
    deep water
    limestone
    sulfate-reducing bacterium
    thrust
    bacteria
    mudstone
    bivalve
    sulfates

    All Science Journal Classification (ASJC) codes

    • Oceanography
    • Geophysics
    • Geology
    • Economic Geology
    • Stratigraphy

    Cite this

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    The Pliocene-age Stirone River hydrocarbon chemoherm complex (Northern Apennines, Italy). / Cau, S.; Franchi, F.; Roveri, M.; Taviani, M.

    In: Marine and Petroleum Geology, Vol. 66, 01.09.2015, p. 582-595.

    Research output: Contribution to journalArticle

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