Articles | Volume 3, issue 2
https://doi.org/10.5194/gchron-3-465-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gchron-3-465-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
23 Sep 2021
Research article |
| 23 Sep 2021
| 23 Sep 2021
TephraNZ: a major- and trace-element reference dataset for glass-shard analyses from prominent Quaternary rhyolitic tephras in New Zealand and implications for correlation
Jenni L. Hopkins
CORRESPONDING AUTHOR
School of Geography Environment and Earth Science, Victoria University of Wellington, Wellington, P.O. Box 600, New Zealand
Janine E. Bidmead
School of Geography Environment and Earth Science, Victoria University of Wellington, Wellington, P.O. Box 600, New Zealand
David J. Lowe
School of Science/Te Aka Mātuatua, University of Waikato, Private Bag 3105, Hamilton 3240, New Zealand
Richard J. Wysoczanski
National Institute of Water and Atmospheric Research, Wellington,
Private Bag 14901, New Zealand
Bradley J. Pillans
Research School of Earth Science, Australian National University, Canberra, Australia
Luisa Ashworth
School of Geography Environment and Earth Science, Victoria University of Wellington, Wellington, P.O. Box 600, New Zealand
Andrew B. H. Rees
School of Geography Environment and Earth Science, Victoria University of Wellington, Wellington, P.O. Box 600, New Zealand
Fiona Tuckett
School of Geography Environment and Earth Science, Victoria University of Wellington, Wellington, P.O. Box 600, New Zealand
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EGUsphere, https://doi.org/10.5194/egusphere-2026-4962, https://doi.org/10.5194/egusphere-2026-4962, 2026
This preprint is open for discussion and under review for Climate of the Past (CP).
Short summary
Short summary
Restiad peatlands in Aotearoa New Zealand preserve geochemical records that may capture past changes in Southern Hemisphere atmospheric circulation. Sampling 13 peatlands, and two monthly across a year, we show that carbon isotopes in wire rush track temperature, while oxygen isotopes reflect the balance of internal root and shoot waters. In two peat cores, twentieth-century trends follow rising carbon dioxide rather than circulation change, indicating that pre-industrial records are needed.
David J. Lowe, Peter M. Abbott, Takehiko Suzuki, and Britta J. L. Jensen
Hist. Geo Space. Sci., 13, 93–132, https://doi.org/10.5194/hgss-13-93-2022, https://doi.org/10.5194/hgss-13-93-2022, 2022
Short summary
Short summary
The Commission on Tephrochronology (COT), formed in 1961, comprises geoscientists who characterize, map, and date tephra (volcanic ash) layers and use them as stratigraphic linking and dating tools in geological, palaeoenvironmental, and archaeological research. We review COT's origins and growth and show how its leadership and activities – hosting meetings, supporting ECRs, developing new analytical and dating methods, and publishing volumes – have strongly influenced tephrochronology globally.
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Short summary
Here we present the foundation dataset for TephraNZ, a formal, comprehensive, open-access reference dataset of glass-shard compositions for New Zealand tephras. We geochemically characterise 45 eruptive episodes ranging from Kaharoa (ca. 636 cal yr BP) to the Hikuroa Pumice member (ca. 2.0 Ma) from six or more caldera sources, most from the central Taupō Volcanic Zone.
Here we present the foundation dataset for TephraNZ, a formal, comprehensive, open-access...
