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dc.contributor.authorNelson, Campbell S.
dc.contributor.authorSchellenberg, Francesca
dc.contributor.authorKing, Peter R.
dc.contributor.authorRicketts, Brian D.
dc.contributor.authorKamp, Peter J.J.
dc.contributor.authorBrowne, Gregory H.
dc.contributor.authorCampbell, Kathleen A.
dc.coverage.spatialConference held at Aucklanden_NZ
dc.date.accessioned2010-02-17T02:32:15Z
dc.date.available2010-02-17T02:32:15Z
dc.date.issued2004
dc.identifier.citationNelson, C.S., Schellenberg, F., King, P., Ricketts, B., Kamp, P.J.J., Browne, G. & Campbell, K. (2004). Note on paramoudra-like carbonate concretions in the Urenui Formation, North Taranaki: possible plumbing system for a Late Miocene methane seep field. In Proceedings of New Zealand Petroleum Conference 2004, 7 – 10 March, Crown Minerals, Ministry of Economic Development, Wellington.en
dc.identifier.urihttps://hdl.handle.net/10289/3611
dc.description.abstractA reconnaissance study of calcitic and dolomitic tubular concretions in upper slope mudstone of the Late Miocene Urenui Formation exposed along the north Taranaki coastline indicates that they have a complex diagenetic history involving different phases of carbonate cementation and likely hydrofracturing associated with build up of fluid/gas pressures. The concretions resemble classical paramoudra in the European chalk, but are not siliceous and do not have a trace fossil origin. Stable oxygen and carbon isotope data suggest that the micritic carbonate cements in the Urenui paramoudra were probably sourced primarily from ascending methane fluid/gases, and that they precipitated entirely within the host mudstone below the seafloor. We suggest the paramoudra may mark the subsurface plumbing networks of a Late Miocene cold seep system, in which case they have relevance to the evolution and migration of hydrocarbons in Taranaki Basin, at this site perhaps focussed along the Taranaki Fault. The presence of dislodged and mass-emplaced paramoudra in the axial conglomerate of channels within the Urenui mudstone suggests there could be a connection between the loci of seep field development and slope failure and canyon cutting on the Late Miocene Taranaki margin.en
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherMinistry of Economic Developmenten_NZ
dc.relation.urihttp://www.crownminerals.govt.nz/cms/petroleum/conferences/conference-proceedings-2004en
dc.rightsThis article has been published in Proceedings of New Zealand Petroleum Conference 2004, 7 – 10 March. © 2004 Nelson, C.S., Schellenberg, F., King, P., Ricketts, B., Kamp, P.J.J., Browne, G. & Campbell, K.en
dc.subjectTaranaki Basinen
dc.subjectMioceneen
dc.subjectHydrocarbonsen
dc.subjectHydrocarbonsen
dc.titleNote on paramoudra-like carbonate concretions in the Urenui Formation, North Taranaki: possible plumbing system for a Late Miocene methane seep fielden
dc.typeConference Contributionen
dc.relation.isPartOf2004 New Zealand Petroleum Conferenceen_NZ
pubs.begin-page1en_NZ
pubs.elements-id15283
pubs.end-page5en_NZ
pubs.finish-date2004-03-10en_NZ
pubs.place-of-publicationWellington, New Zealanden_NZ
pubs.start-date2004-03-07en_NZ
pubs.volume2004 New Zealand Petroleum Conference Proceedingsen_NZ


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