Stratigraphy and chronology of late Quaternary tephras in Lake Maratoto, Hamilton, New Zealand
- 1 July 1980
- journal article
- research article
- Published by Taylor & Francis in New Zealand Journal of Geology and Geophysics
- Vol. 23 (4), 481-485
- https://doi.org/10.1080/00288306.1980.10424118
Abstract
A 3 m piston core from Lake Maratoto (37°53'S 175°18'E) near Hamilton shows at least 12 thin, well-preserved distal airfall tephras intercalated with humic copropel (dy) deposits. Most of the tephras have been identified by their dominant ferromagnesian mineralogy, their stratigraphic position, and 5 radiocarbon dates. The majority of the tephras are derived from the Taupo and Okataina Volcanic Centres, while others originate from Mayor Island, Tongariro, and possibly Mount Egmont sources. The tephras dated (Libby ages) are: Taupo Pumice (Wk215) 1730 ± 60 years B.P., Tuhua Tephra (Wk214) 6210 ± 70 years B.P., Mangamate Tephra (Wk213) 10 120 ± 100 years B.P., and Rerewhakaaitu Ash (2 dates) (Wk237) 14 700 ± 220 years B.P. and (Wk238) 14 700 ± 180 years B.P. The identification of the tephras in Lake Maratoto extends the previously mapped distribution of North Island post-glacial (Holocene) tephras, and complements studies of soil genesis and weathering in the Waikato region. The core also provides a geochronological basis for further multidisciplinary studies of the paleolimnology, paleoclimate, and sedimentological history of the region.Keywords
This publication has 17 references indexed in Scilit:
- Palynology, age and environmental significance of some peat beds in the upper Pleistocene Hinuera formation, South Auckland, New ZealandJournal of the Royal Society of New Zealand, 1978
- Tirau “Ash”: CommentNew Zealand Journal of Geology and Geophysics, 1978
- Andesites of the Tongariro volcanic centre, North Island, New ZealandJournal of Volcanology and Geothermal Research, 1978
- Tephra distribution and sedimentation rates m the Bay of Plenty, New ZealandNew Zealand Journal of Geology and Geophysics, 1978
- Cavitation-induced nucleation of ice: A possible mechanism for frost-cracking in rocksNew Zealand Journal of Geology and Geophysics, 1976
- Climate-controlled tephra redeposition on Pouakai ring plain, Taranaki, New ZealandNew Zealand Journal of Geology and Geophysics, 1975
- Quaternary acid magma in New ZealandContributions to Mineralogy and Petrology, 1975
- New Zealand radiocarbon age measurements — 6New Zealand Journal of Geology and Geophysics, 1971
- Notes on the chemistry of ferromagnesian phenocrysts from selected volcanic rocks, Central Volcanic RegionNew Zealand Journal of Geology and Geophysics, 1971
- Voluminous low temperature rhyolitic magmas in New ZealandContributions to Mineralogy and Petrology, 1971