Mineralogy, geochemistry and petrography of Methane-Derived Authigenic Carbonates from Enza River, Northern Apennines (Italy)

Irene Viola, Davide Oppo, Fulvio Franchi, Rossella Capozzi, Enrico Dinelli, Barbara Liverani, Marco 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
Issue number3
Early online date20 Mar 2015
DOIs
Publication statusPublished - Sep 2015

Fingerprint

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

Keywords

  • carbonate chimneys
  • hydrocarbon migration
  • anaerobic methane oxidation
  • Apennine chain

Cite this

Mineralogy, geochemistry and petrography of Methane-Derived Authigenic Carbonates from Enza River, Northern Apennines (Italy). / Viola, Irene; Oppo, Davide; Franchi, Fulvio; Capozzi, Rossella; Dinelli, Enrico; Liverani, Barbara; Taviani, Marco.

In: Marine and Petroleum Geology, Vol. 66, No. 3, 09.2015, p. 566-581.

Research output: Contribution to journalArticle

Viola, Irene ; Oppo, Davide ; Franchi, Fulvio ; Capozzi, Rossella ; Dinelli, Enrico ; Liverani, Barbara ; Taviani, Marco. / Mineralogy, geochemistry and petrography of Methane-Derived Authigenic Carbonates from Enza River, Northern Apennines (Italy). In: Marine and Petroleum Geology. 2015 ; Vol. 66, No. 3. pp. 566-581.
@article{82b7fae3d3f74ea8ab85efd96c5e5015,
title = "Mineralogy, geochemistry and petrography of Methane-Derived Authigenic Carbonates from Enza River, Northern Apennines (Italy)",
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.",
keywords = "carbonate chimneys, hydrocarbon migration, anaerobic methane oxidation, Apennine chain",
author = "Irene Viola and Davide Oppo and Fulvio Franchi and Rossella Capozzi and Enrico Dinelli and Barbara Liverani and Marco Taviani",
note = "Acknowledgements Funding was provided by the national project PRIN 2009 “Carbonate conduits linked to hydrocarbons enriched seepages” (PI R. Capozzi) of the Italian Ministry of University and Research (MIUR). Thanks are due to C. Mazzoli (University of Padua) for the access at the cathodoluminescence facilities. The authors are indebted with two anonymous reviewers for their constructive criticism. This is ISMAR-Bologna scientific contribution number 1851.",
year = "2015",
month = "9",
doi = "10.1016/j.marpetgeo.2015.03.011",
language = "English",
volume = "66",
pages = "566--581",
journal = "Marine and Petroleum Geology",
issn = "0264-8172",
publisher = "Elsevier",
number = "3",

}

TY - JOUR

T1 - Mineralogy, geochemistry and petrography of Methane-Derived Authigenic Carbonates from Enza River, Northern Apennines (Italy)

AU - Viola, Irene

AU - Oppo, Davide

AU - Franchi, Fulvio

AU - Capozzi, Rossella

AU - Dinelli, Enrico

AU - Liverani, Barbara

AU - Taviani, Marco

N1 - Acknowledgements Funding was provided by the national project PRIN 2009 “Carbonate conduits linked to hydrocarbons enriched seepages” (PI R. Capozzi) of the Italian Ministry of University and Research (MIUR). Thanks are due to C. Mazzoli (University of Padua) for the access at the cathodoluminescence facilities. The authors are indebted with two anonymous reviewers for their constructive criticism. This is ISMAR-Bologna scientific contribution number 1851.

PY - 2015/9

Y1 - 2015/9

N2 - 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.

AB - 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.

KW - carbonate chimneys

KW - hydrocarbon migration

KW - anaerobic methane oxidation

KW - Apennine chain

U2 - 10.1016/j.marpetgeo.2015.03.011

DO - 10.1016/j.marpetgeo.2015.03.011

M3 - Article

VL - 66

SP - 566

EP - 581

JO - Marine and Petroleum Geology

JF - Marine and Petroleum Geology

SN - 0264-8172

IS - 3

ER -