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dc.contributor.authorLowe, David J.en_NZ
dc.contributor.authorHogg, Alan G.en_NZ
dc.date.accessioned2016-05-05T02:37:48Z
dc.date.available1986-01-01en_NZ
dc.date.available2016-05-05T02:37:48Z
dc.date.issued1986-01-01en_NZ
dc.identifier.citationLowe, D. J., & Hogg, A. G. (1986). Tephrostratigraphy arid chronology of the kaipo lagoon, an 11, 500 year-old montane peat bog in urewera national Park, New Zealand. Journal of the Royal Society of New Zealand, 16(1), 25–41. http://doi.org/10.1080/03036758.1986.10426953en
dc.identifier.issn0303-6758en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/10177
dc.description.abstractEleven well-preserved Holocene tephras occur interbedded with peat in the Kaipo Lagoon bog in Urewera National Park, North Island. They are identified chiefly by their field appearance, stratigraphy, and ferromagnesian mineralogy. Glass shards from one tephra (Hinemaiaia) were analysed by electron microprobe.The tephras originate from the Taupo, Okataina, and Tongariro Volcanic Centres and, from youngest to oldest, are: Kaharoa Ash, Taupo Pumice, Mapara Tephra, Waimihia Lapilli, Hinemaiaia Tephra, Whakatane Ash, Rotoma Ash, Opepe Tephra, Poronui Tephra, Karapiti Tephra, and Okupata Tephra. Thirteen new radiocarbon ages were obtained on six of the tephras (old TY2, years B.P.): Waimihia, 3, 250 ± 70 (Wk498), 2, 910 ± 60 (Wk499), 3, 040 ± 50 (Wk500); Hinemaiaia and Whakatane, 4, 490 ± 60 (Wk496), 4, 530 ± 60 (Wk497); Whakatane, 4, 860 ± 70 (Wk501); Rotoma, 5, 440 ± 170 (Wk493), 7, 380 ± 80 (Wk494), 7, 560 ± 100 (Wk495) (Wk493 -495 are all considered anomalously young); Opepe, 8, 7lO ± 80 (Wk492); Poronui, 10, 160 ± 130 (Wk351), 9, 960 ± 90 (Wk352), 9, 560 ± 80 (Wk491). Estimated ages, assuming constant sedimentation rates, for Karapiti Tephra and Okupata Tephra are 10, 100 and 10, 300 years, respectively. Two peat horizons below the Okupata Tephra were dated at (old TY2) 10, 600 ± 90 years B.P. (Wk263) and 11, 500 ± 80 years B.P. (Wk264) and date the initial growth of the Kaipo Lagoon bog. Peat accumulation rates have been slow (average 0.19 mm/year) but variable.The identification and dating of the tephras at Kaipo extends their known distribution in eastern North Island, and improves their potential usefulness as isochronous stratigraphic marker units.en_NZ
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dc.languageen
dc.language.isoen
dc.rightsThe final, definitive version of this article has been published in the Journal of The Royal Society of New Zealand 16(1), 1986 © 1986 Journal of the Royal Society of New Zealand.
dc.titleTephrostratigraphy arid chronology of the kaipo lagoon, an 11, 500 year-old montane peat bog in urewera national Park, New Zealanden_NZ
dc.typeJournal Article
dc.identifier.doi10.1080/03036758.1986.10426953en_NZ
dc.relation.isPartOfJournal of the Royal Society of New Zealanden_NZ
pubs.begin-page25
pubs.elements-id68510
pubs.end-page41
pubs.issue1en_NZ
pubs.volume16en_NZ


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