Mineralogy, geochemistry and petrography of methane-derived authigenic carbonates from Enza River, Northern Apennines (Italy)

I. Viola, D. Oppo, F. Franchi, R. Capozzi, E. Dinelli, B. Liverani, M. Taviani

    Research output: Contribution to journalArticle

    13 Citations (Scopus)

    Abstract

    A remarkable exposure of carbonate pipe-like and slab concretions occurs along the Enza riverbanks on the Northern Apennines foothills (Italy). Based upon geochemical and field evidences, their genesis has been attributed to microbial-governed carbonate precipitation from hydrocarbon-enriched fluids. The pipe-like concretions are thus interpreted as former conduits (chimneys) marking sites of methane ascent onto the seafloor. The resulting Enza River chimney field is arranged in a palisade fashion, a rare example of such. Mineralogical and petrographic analyses of some chimneys and slabs document that the dominant cement is dolomite. Although the chimneys show a rather homogeneous texture, a clear zonation is observed in the relative distribution of major and minor elements in their internal and external parts. The occurrence of sulphide minerals in the stratigraphically upper samples indicates possible renewal of fluids leakage after a major erosive event.

    Original languageEnglish
    Pages (from-to)566-581
    Number of pages16
    JournalMarine and Petroleum Geology
    Volume66
    DOIs
    Publication statusPublished - Sep 1 2015

    Fingerprint

    petrography
    chimneys
    mineralogy
    geochemistry
    Italy
    rivers
    carbonates
    methane
    carbonate
    concretion
    river
    slab
    slabs
    pipe
    fluid
    fluids
    ascent
    cements
    zonation
    marking

    All Science Journal Classification (ASJC) codes

    • Oceanography
    • Geophysics
    • Geology
    • Economic Geology
    • Stratigraphy

    Cite this

    Viola, I. ; Oppo, D. ; Franchi, F. ; Capozzi, R. ; Dinelli, E. ; Liverani, B. ; Taviani, M. / Mineralogy, geochemistry and petrography of methane-derived authigenic carbonates from Enza River, Northern Apennines (Italy). In: Marine and Petroleum Geology. 2015 ; Vol. 66. pp. 566-581.
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    Mineralogy, geochemistry and petrography of methane-derived authigenic carbonates from Enza River, Northern Apennines (Italy). / Viola, I.; Oppo, D.; Franchi, F.; Capozzi, R.; Dinelli, E.; Liverani, B.; Taviani, M.

    In: Marine and Petroleum Geology, Vol. 66, 01.09.2015, p. 566-581.

    Research output: Contribution to journalArticle

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    AU - Franchi, F.

    AU - Capozzi, R.

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    AU - Liverani, B.

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