气候变化领域集成服务门户(CCPortal): The timing and nature of the last glacial cycle in New Zealand

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DOI	10.1016/j.quascirev.2018.12.020
	The timing and nature of the last glacial cycle in New Zealand
	Shulmeister J.; Thackray G.D.; Rittenour T.M.; Fink D.; Patton N.R.
发表日期	2019
ISSN	0277-3791
起始页码	1
结束页码	20
卷号	206
英文摘要	This paper constitutes a review of the last (Otiran) glaciation in New Zealand, spanning marine isotope stages (MIS) 4-2. We highlight the nature of glaciation, which is characterised by exceptional sedimentation, relatively mild maritime climatic conditions and the widespread presence of water associated with proglacial settings. These conditions produce glacial systems characterised by extensive outwash fans and relatively small terminal moraines. Extensive recent geochronological work allows us to recognise at least eight glacial advances during the Otiran. These occurred at 65 ± 3.25ka, 47.5 ± 3 ka, 38.5 ± 2 ka, 31.5 ± 3 ka, 26.5 ± 2 ka, 20.5 ± 2 ka, 17 ± 2 ka and 13 ± 1 ka, which we term the Otira 1 to 8 advances, respectively. Though the analytical uncertainty ranges for some of these advances overlap, all are independently distinguished through moraine morphologic relationships and/or stratigraphic relationships in outcrop. Major advances appear to be associated with climate influences such as periods of Southern Hemisphere insolation minima (65ka, and 31.5 ka advances), the last glacial maximum cooling (LGM) (20.5 ka) and periods of Antarctic cooling (13ka). The timing of greatest glacial extent in the last glacial cycle is not simultaneous across New Zealand. The MIS 4 advance was the greatest in the southern South Island, while the MIS 3/2 advances (26.5 ka) were greatest in the central South Island. In the northern South Island and the North Island, MIS 4, MIS 3/2, and the last glacial maximum appear to be equivalent in extent. We attribute these spatio-temporal variations in the timing of maximum glaciation to precipitation changes related to a northward shift in the track of the westerlies. © 2018 Elsevier Ltd
英文关键词	CRN; Glacial advances; Luminescence dating; New Zealand; Otiran glaciation; Paleoclimate; Westerlies
语种	英语
scopus关键词	Geochronology; Stratigraphy; Timing circuits; Glacial advances; Luminescence dating; New zealand; Otiran glaciation; Paleoclimates; Westerlies; Glacial geology; climate conditions; geochronology; glaciation; glacier advance; Last Glacial; Last Glacial Maximum; luminescence dating; marine isotope stage; moraine; outcrop; outwash; paleoclimate; sequence stratigraphy; Southern Hemisphere; westerly; New Zealand; North Island; South Island
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/152030
作者单位	School of Earth and Environmental Sciences, University of Queensland, St Lucia, Qld 4072, Australia; Department of Geosciences, Idaho State University, Pocatello, ID 83209, United States; Department of Geology, Utah State University, Logan, UT 84322-4505, United States; Australian Nuclear Science and Technology Organisation, Lucas Heights, NSW 2234, Australia
推荐引用方式 GB/T 7714	Shulmeister J.,Thackray G.D.,Rittenour T.M.,et al. The timing and nature of the last glacial cycle in New Zealand[J],2019,206.
APA	Shulmeister J.,Thackray G.D.,Rittenour T.M.,Fink D.,&Patton N.R..(2019).The timing and nature of the last glacial cycle in New Zealand.Quaternary Science Reviews,206.
MLA	Shulmeister J.,et al."The timing and nature of the last glacial cycle in New Zealand".Quaternary Science Reviews 206(2019).