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| DOI | 10.1016/j.quascirev.2019.07.022 |
| Millennial-scale pulsebeat of glaciation in the Southern Alps of New Zealand | |
| Strand P.D.; Schaefer J.M.; Putnam A.E.; Denton G.H.; Barrell D.J.A.; Koffman T.N.B.; Schwartz R. | |
| 发表日期 | 2019 |
| ISSN | 0277-3791 |
| 起始页码 | 165 |
| 结束页码 | 177 |
| 卷号 | 220 |
| 英文摘要 | We undertook geomorphological mapping in conjunction with 10Be surface-exposure dating in a previously unstudied sector of the left-lateral moraine sequence of the ice-age Pukaki glacier in the Southern Alps of New Zealand. The mapping and dating approach enabled the identification of six distinct moraine belts that were formed during maxima of glacier extent during the last glaciation. The chronology implies that ice recession occurred during Northern Hemisphere Heinrich stadials, while expansion occurred between Heinrich stadials. The ages of the moraine belts identified here are 44,000 ± 1000 yrs; 41,800 ± 1100 yrs; 36,450 ± 940 yrs 26,730 ± 740 yrs; 20,030 ± 460 yrs; and 18,000 ± 400 yrs. This moraine chronology is consistent with previous dating results from other sectors of the Pukaki moraine sequence, except that the c. 44,000 yr old moraine belt has not previously been detected elsewhere in the Pukaki moraines. Collectively with previously published 10Be chronologies from the Pukaki glacier, and the adjacent Ohau glacier valley, the results demonstrate that there were several millennial-scale episodes of ice advance to full-glacial extent, and subsequent ice recession, during Marine Isotope Stages 3 and 2. This millennial-scale pulsebeat of oscillations of the Pukaki and Ohau glaciers in sympathy with the North Atlantic Heinrich episodes is further emphasized by rapid ice recession in the Southern Alps early in the last glacial termination, coeval with the onset of Heinrich stadial 1 (HS 1) in the Northern Hemisphere. That this pattern is widespread in mid-latitudes of the Southern Hemisphere is highlighted by similar chronologies of glacier variation for Andean ice lobes in the Chilean Lake District of South America. © 2019 Elsevier Ltd |
| 英文关键词 | Cosmogenic isotopes; Glacial geomorphology; Heinrich stadials; Last glacial termination; New Zealand; Pleistocene; Southern Alps; Southern Pacific |
| 语种 | 英语 |
| scopus关键词 | Glacial geology; Isotopes; Mapping; Cosmogenic isotopes; Glacial geomorphology; Heinrich stadials; Last glacial terminations; New zealand; Pleistocene; Southern Alps; Southern Pacific; Ice; chronology; geomorphological mapping; Heinrich event; last glaciation; mapping method; marine isotope stage; midlatitude environment; moraine; Northern Hemisphere; Pleistocene; Southern Hemisphere; Atlantic Ocean; Atlantic Ocean (North); New Zealand; South America; South Island; Southern Alps |
| 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/151807 |
| 作者单位 | School of Earth and Climate Sciences and Climate Change Institute, University of Maine, Orono, ME 04469, United States; Lamont-Doherty Earth Observatory of Columbia University, 61 Rt. 9W, Palisades, NY 10964, United States; Department of Earth and Environmental Sciences, Columbia University, New York, NY 10027, United States; GNS Science, Private Bag 1930, Dunedin, 9054, New Zealand |
| 推荐引用方式 GB/T 7714 | Strand P.D.,Schaefer J.M.,Putnam A.E.,et al. Millennial-scale pulsebeat of glaciation in the Southern Alps of New Zealand[J],2019,220. |
| APA | Strand P.D..,Schaefer J.M..,Putnam A.E..,Denton G.H..,Barrell D.J.A..,...&Schwartz R..(2019).Millennial-scale pulsebeat of glaciation in the Southern Alps of New Zealand.Quaternary Science Reviews,220. |
| MLA | Strand P.D.,et al."Millennial-scale pulsebeat of glaciation in the Southern Alps of New Zealand".Quaternary Science Reviews 220(2019). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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