Fingerprints and age models for widespread New Zealand tephra marker beds erupted since 30,000 years ago: a framework for NZ-INTIMATE
The role of tephras in the NZ-INTIMATE project is a critical one because most high-resolution palaeoclimatic records are linked and dated by one or more tephra layers. In this review, first we document eruptive, distributional, and compositional fingerprinting data, both mineralogical and geochemica...
Published in: | Quaternary Science Reviews |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2008
|
Subjects: | |
Online Access: | https://hdl.handle.net/10289/925 https://doi.org/10.1016/j.quascirev.2007.01.013 |
id |
ftunivwaikato:oai:researchcommons.waikato.ac.nz:10289/925 |
---|---|
record_format |
openpolar |
spelling |
ftunivwaikato:oai:researchcommons.waikato.ac.nz:10289/925 2024-01-21T10:01:16+01:00 Fingerprints and age models for widespread New Zealand tephra marker beds erupted since 30,000 years ago: a framework for NZ-INTIMATE Lowe, David J. Shane, Phil A.R. Alloway, Brent V. Newnham, Rewi M. 2008-01 https://hdl.handle.net/10289/925 https://doi.org/10.1016/j.quascirev.2007.01.013 en eng Elsevier Quaternary Science Reviews Lowe, D.J., Shane, P.A.R., Alloway, B.V. & Newnham, R.M. (2008). Fingerprints and age models for widespread New Zealand tephra marker beds erupted since 30,000 years ago: a framework for NZ-INTIMATE. Quaternary Science Reviews 26(1-2), 95-126. 0277-3791 https://hdl.handle.net/10289/925 doi:10.1016/j.quascirev.2007.01.013 tephra tephrochronology New Zealand Journal Article 2008 ftunivwaikato https://doi.org/10.1016/j.quascirev.2007.01.013 2023-12-26T18:25:20Z The role of tephras in the NZ-INTIMATE project is a critical one because most high-resolution palaeoclimatic records are linked and dated by one or more tephra layers. In this review, first we document eruptive, distributional, and compositional fingerprinting data, both mineralogical and geochemical, for 22 key marker tephras erupted since 30,000 years ago to facilitate their identification and correlation. We include new glass compositional data. The selected marker tephras comprise 10 from Taupo and nine from Okataina volcanoes (rhyolitic), one from Tuhua volcano (peralkaline rhyolitic), and one each from Tongariro and Egmont volcanoes (andesitic). Second, we use four approaches to develop 2σ-age models for the tephras (youngest to oldest): (1) calendar ages for Kaharoa and Taupo/Y were obtained by wiggle-matching log-derived tree-ring sequences dated by 14C; (2) Whakaipo/V was dated using an age–depth model from peat; (3) 14 tephras in the montane Kaipo peat sequence (Waimihia/S, Unit K, Whakatane, Tuhua, Mamaku, Rotoma, Opepe/E, Poronui/C, Karapiti/B, Okupata, Konini, Waiohau, Rotorua, Rerewhakaaitu) were dated by simultaneously wiggle-matching stratigraphic position and 51 independent 14C-age points against IntCal04 using Bayesian probability methods via both OxCal and Bpeat; and (4) the five oldest tephras, erupted before ca 18,000 cal. yr BP, were dated by calibrating limited numbers of 14C ages using IntCal04 (Okareka) or comparison curves of the expanded Cariaco Basin sequence (Te Rere, Kawakawa/Oruanui, Poihipi, Okaia). Kawakawa/Oruanui tephra, the most widely distributed marker tephra, was erupted probably ca 27,097±957 cal. yr BP. Potential dating approaches for the older tephras include their identification in Antarctic ice cores (if present) or annually laminated sediments for which robust calendar-age models have been constructed, high-precision AMS 14C dating on appropriate material from environmentally stable sites, systematic luminescence dating, or new radiometric techniques (e.g. U–Th/He) if ... Article in Journal/Newspaper Antarc* Antarctic The University of Waikato: Research Commons Antarctic New Zealand Quaternary Science Reviews 27 1-2 95 126 |
institution |
Open Polar |
collection |
The University of Waikato: Research Commons |
op_collection_id |
ftunivwaikato |
language |
English |
topic |
tephra tephrochronology New Zealand |
spellingShingle |
tephra tephrochronology New Zealand Lowe, David J. Shane, Phil A.R. Alloway, Brent V. Newnham, Rewi M. Fingerprints and age models for widespread New Zealand tephra marker beds erupted since 30,000 years ago: a framework for NZ-INTIMATE |
topic_facet |
tephra tephrochronology New Zealand |
description |
The role of tephras in the NZ-INTIMATE project is a critical one because most high-resolution palaeoclimatic records are linked and dated by one or more tephra layers. In this review, first we document eruptive, distributional, and compositional fingerprinting data, both mineralogical and geochemical, for 22 key marker tephras erupted since 30,000 years ago to facilitate their identification and correlation. We include new glass compositional data. The selected marker tephras comprise 10 from Taupo and nine from Okataina volcanoes (rhyolitic), one from Tuhua volcano (peralkaline rhyolitic), and one each from Tongariro and Egmont volcanoes (andesitic). Second, we use four approaches to develop 2σ-age models for the tephras (youngest to oldest): (1) calendar ages for Kaharoa and Taupo/Y were obtained by wiggle-matching log-derived tree-ring sequences dated by 14C; (2) Whakaipo/V was dated using an age–depth model from peat; (3) 14 tephras in the montane Kaipo peat sequence (Waimihia/S, Unit K, Whakatane, Tuhua, Mamaku, Rotoma, Opepe/E, Poronui/C, Karapiti/B, Okupata, Konini, Waiohau, Rotorua, Rerewhakaaitu) were dated by simultaneously wiggle-matching stratigraphic position and 51 independent 14C-age points against IntCal04 using Bayesian probability methods via both OxCal and Bpeat; and (4) the five oldest tephras, erupted before ca 18,000 cal. yr BP, were dated by calibrating limited numbers of 14C ages using IntCal04 (Okareka) or comparison curves of the expanded Cariaco Basin sequence (Te Rere, Kawakawa/Oruanui, Poihipi, Okaia). Kawakawa/Oruanui tephra, the most widely distributed marker tephra, was erupted probably ca 27,097±957 cal. yr BP. Potential dating approaches for the older tephras include their identification in Antarctic ice cores (if present) or annually laminated sediments for which robust calendar-age models have been constructed, high-precision AMS 14C dating on appropriate material from environmentally stable sites, systematic luminescence dating, or new radiometric techniques (e.g. U–Th/He) if ... |
format |
Article in Journal/Newspaper |
author |
Lowe, David J. Shane, Phil A.R. Alloway, Brent V. Newnham, Rewi M. |
author_facet |
Lowe, David J. Shane, Phil A.R. Alloway, Brent V. Newnham, Rewi M. |
author_sort |
Lowe, David J. |
title |
Fingerprints and age models for widespread New Zealand tephra marker beds erupted since 30,000 years ago: a framework for NZ-INTIMATE |
title_short |
Fingerprints and age models for widespread New Zealand tephra marker beds erupted since 30,000 years ago: a framework for NZ-INTIMATE |
title_full |
Fingerprints and age models for widespread New Zealand tephra marker beds erupted since 30,000 years ago: a framework for NZ-INTIMATE |
title_fullStr |
Fingerprints and age models for widespread New Zealand tephra marker beds erupted since 30,000 years ago: a framework for NZ-INTIMATE |
title_full_unstemmed |
Fingerprints and age models for widespread New Zealand tephra marker beds erupted since 30,000 years ago: a framework for NZ-INTIMATE |
title_sort |
fingerprints and age models for widespread new zealand tephra marker beds erupted since 30,000 years ago: a framework for nz-intimate |
publisher |
Elsevier |
publishDate |
2008 |
url |
https://hdl.handle.net/10289/925 https://doi.org/10.1016/j.quascirev.2007.01.013 |
geographic |
Antarctic New Zealand |
geographic_facet |
Antarctic New Zealand |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Quaternary Science Reviews Lowe, D.J., Shane, P.A.R., Alloway, B.V. & Newnham, R.M. (2008). Fingerprints and age models for widespread New Zealand tephra marker beds erupted since 30,000 years ago: a framework for NZ-INTIMATE. Quaternary Science Reviews 26(1-2), 95-126. 0277-3791 https://hdl.handle.net/10289/925 doi:10.1016/j.quascirev.2007.01.013 |
op_doi |
https://doi.org/10.1016/j.quascirev.2007.01.013 |
container_title |
Quaternary Science Reviews |
container_volume |
27 |
container_issue |
1-2 |
container_start_page |
95 |
op_container_end_page |
126 |
_version_ |
1788691097304694784 |