Towards a climate event stratigraphy for New Zealand over the past 30 000 years (NZ-INTIMATE project)

Alloway, Brent V., Lowe, David J., Barrell, David J. A., Newnham, Rewi M., Almond, Peter C., Augustinus, Paul C., Bertler, Nancy A. N., Carter, Lionel, Litchfield, Nicola J., McGlone, Matt S., Shulmeister, Jamie, Vandergoes, Marcus J., Williams, Paul W. and NZ-INTIMATE members (2007) Towards a climate event stratigraphy for New Zealand over the past 30 000 years (NZ-INTIMATE project). Journal of Quaternary Science, 22 1: 9-35. doi:10.1002/jqs.1079

Author Alloway, Brent V.
Lowe, David J.
Barrell, David J. A.
Newnham, Rewi M.
Almond, Peter C.
Augustinus, Paul C.
Bertler, Nancy A. N.
Carter, Lionel
Litchfield, Nicola J.
McGlone, Matt S.
Shulmeister, Jamie
Vandergoes, Marcus J.
Williams, Paul W.
Title Towards a climate event stratigraphy for New Zealand over the past 30 000 years (NZ-INTIMATE project)
Journal name Journal of Quaternary Science   Check publisher's open access policy
ISSN 0267-8179
Publication date 2007-01
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1002/jqs.1079
Volume 22
Issue 1
Start page 9
End page 35
Total pages 26
Place of publication Sussex, England
Publisher John Wiley & Sons Ltd
Language eng
Subject 050205 Environmental Management
Abstract It is widely recognised that the acquisition of high-resolution palaeoclimate records from southern mid-latitude sites is essential for establishing a coherent picture of inter-hemispheric climate change and for better understanding of the role of Antarctic climate dynamics in the global climate system. New Zealand is considered to be a sensitive monitor of climate change because it is one of a few sizeable landmasses in the Southern Hemisphere westerly circulation zone, a critical transition zone between subtropical and Antarctic influences. New Zealand has mountainous axial ranges that amplify the climate signals and, consequently, the environmental gradients are highly sensitive to subtle changes in atmospheric and oceanic conditions. Since 1995, INTIMATE has, through a series of international workshops, sought ways to improve procedures for establishing the precise ages of climate events, and to correlate them with high precision, for the last 30 000 calendar years. The NZ-INTIMATE project commenced in late 2003, and has involved virtually the entire New Zealand palaeoclimate community. Its aim is to develop an event stratigraphy for the New Zealand region over the past 30 000 years, and to reconcile these events against the established climatostratigraphy of the last glacial cycle which has largely been developed from Northern Hemisphere records (e.g. Last Glacial Maximum (LGM), Termination I, Younger Dryas). An initial outcome of NZ-INTIMATE has been the identification of a series of well-dated, high-resolution onshore and offshore proxy records from a variety of latitudes and elevations on a common calendar timescale from 30 000 cal. yr BP to the present day. High-resolution records for the last glacial coldest period (LGCP) (including the LGM sensu stricto) and last glacial-interglacial transition (LGIT) from Auckland maars, Kaipo and Otamangakau wetlands on eastern and central North Island, marine core MD97-2121 east of southern North Island, speleothems on northwest South Island, Okarito wetland on southwestern South Island, are presented. Discontinuous (fragmentary) records comprising compilations of glacial sequences, fluvial sequences, loess accumulation, and aeolian quartz accumulation in an andesitic terrain are described. Comparisons with ice-core records from Antarctica (EPICA Dome C) and Greenland (GISP2) are discussed. A major advantage immediately evident from these records apart from the speleothem record, is that they are linked precisely by one or more tephra layers. Based on these New Zealand terrestrial and marine records, a reasonably coherent, regionally applicable, sequence of climatically linked stratigraphic events over the past 30 000 cal. yr is emerging. Three major climate events are recognised: (1) LGCP beginning at ca. 28 000 cal. yr BP, ending at Termination I, ca. 18 000 cal. yr BP, and including a warmer and more variable phase between ca. 27 000 and 21 000 cal. yr BP, (2) LGIT between ca. 18 000 and 11 600 cal. yr BP, including a Lateglacial warm period from ca. 14 800 to 13 500 cal. yr BP and a Lateglacial climate reversal between ca. 13 500 and 11 600 cal. yr BP, and (3) Holocene interglacial conditions, with two phases of greatest warmth between ca. 11 600 and 10 800 cal. yr BP and from ca. 6 800 to 6 500 cal. yr BP. Some key boundaries coincide with volcanic tephras. Copyright © 2007 John Wiley & Sons, Ltd.
Keyword Last glacial coldest period
Last Glacial Maximum
Antarctic Cold Reversal
Termination I
marine core
glacial sequences
river terraces
aeolian quartz
New Zealand
Q-Index Code C1

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collections: Excellence in Research Australia (ERA) - Collection
School of Geography, Planning and Environmental Management Publications
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 157 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 152 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Tue, 22 Dec 2009, 10:03:06 EST by Thelma Whitbourne on behalf of Faculty of Science