Mangarara Formation: exhumed remnants of a middle Miocene, temperate carbonate, submarine channel-fan system on the eastern margin of Taranaki Basin, New Zealand

Simple item page
dc.contributor.authorPuga-Bernabéu, Ángel
dc.contributor.authorVonk, Adam J.
dc.contributor.authorNelson, Campbell S.
dc.contributor.authorKamp, Peter J.J.
dc.date.accessioned2010-07-20T23:56:34Z
dc.date.available2010-07-20T23:56:34Z
dc.date.issued2009
dc.description.abstractThe middle Miocene Mangarara Formation is a thin (1–60 m), laterally discontinuous unit of moderately to highly calcareous (40–90%) facies of sandy to pure limestone, bioclastic sandstone, and conglomerate that crops out in a few valleys in North Taranaki across the transition from King Country Basin into offshore Taranaki Basin. The unit occurs within hemipelagic (slope) mudstone of Manganui Formation, is stratigraphically associated with redeposited sandstone of Moki Formation, and is overlain by redeposited volcaniclastic sandstone of Mohakatino Formation. The calcareous facies of the Mangarara Formation are interpreted to be mainly mass-emplaced deposits having channelised and sheet-like geometries, sedimentary structures supportive of redeposition, mixed environment fossil associations, and stratigraphic enclosure within bathyal mudrocks and flysch. The carbonate component of the deposits consists mainly of bivalves, larger benthic foraminifers (especially Amphistegina), coralline red algae including rhodoliths (Lithothamnion and Mesophyllum), and bryozoans, a warm-temperate, shallow marine skeletal association. While sediment derivation was partly from an eastern contemporary shelf, the bulk of the skeletal carbonate is inferred to have been sourced from shoal carbonate factories around and upon isolated basement highs (Patea-Tongaporutu High) to the south. The Mangarara sediments were redeposited within slope gullies and broad open submarine channels and lobes in the vicinity of the channel-lobe transition zone of a submarine fan system. Different phases of sediment transport and deposition (lateral-accretion and aggradation stages) are identified in the channel infilling. Dual fan systems likely co-existed, one dominating and predominantly siliciclastic in nature (Moki Formation), and the other infrequent and involving the temperate calcareous deposits of Mangarara Formation. The Mangarara Formation is an outcrop analogue for middle Miocene-age carbonate slope-fan deposits elsewhere in subsurface Taranaki Basin, New Zealand.en_NZ
dc.format.mimetypeapplication/pdf
dc.identifier.citationPuga-Bernabéu, Á., Vonk, A.J., Nelson, C.S. & Kamp, P.J.J. (2009). Mangarara Formation: exhumed remnants of a middle Miocene, temperate carbonate, submarine channel-fan system on the eastern margin of Taranaki Basin, New Zealand. New Zealand Journal of Geology & Geophysics, 52(2), 73-93.en_NZ
dc.identifier.doi10.1080/00288300909509880en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/4175
dc.language.isoen
dc.publisherThe Royal Society of New Zealanden_NZ
dc.relation.isPartOfNew Zealand Journal of Geology and Geophysicsen_NZ
dc.relation.urihttp://www.royalsociety.org.nz/Site/publish/Journals/nzjgg/2009/008.aspxen_NZ
dc.rights© The Royal Society of New Zealand 2009. Used with permission.
dc.subjectsubmarine channelen_NZ
dc.subjecttemperate carbonatesen_NZ
dc.subjectsediment gravity flowsen_NZ
dc.subjectmiddle Mioceneen_NZ
dc.subjectMangarara Formationen_NZ
dc.subjectTaranaki Basinen_NZ
dc.titleMangarara Formation: exhumed remnants of a middle Miocene, temperate carbonate, submarine channel-fan system on the eastern margin of Taranaki Basin, New Zealanden_NZ
dc.typeJournal Articleen_NZ
pubs.begin-page73en_NZ
pubs.elements-id33977
pubs.end-page93en_NZ
pubs.issue2en_NZ
pubs.volume52en_NZ
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Kamp 2009 Mangarara.pdf
Size:
13.03 MB
Format:
Adobe Portable Document Format
Thumbnail Image
Name: Kamp 2009 Mangarara.pdf
Size: 13.03 MB
Kind: Adobe PDF
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Name: license.txt
Size: 1.71 KB
Kind: License
Collections
Science and Engineering Papers