Latest Pleistocene and Holocene glacial events in the Colonia valley, Northern Patagonia Icefield, southern Chile

Latest Pleistocene and Holocene glacial events in the Colonia valley, Northern Patagonia Icefield, southern Chile
复制标题

智利南部巴塔哥尼亚冰原北部科洛尼亚山谷最新更新世和全新世冰川事件

DOI:
--
复制
发表时间:
2016
期刊:
影响因子:
--
通讯作者:
J. Leidich
J. Leidich
中科院分区:
--
文献类型:
--
作者:
D. Nimick;D. McGrath;S. Mahan;B. Friesen;J. Leidich

文献摘要

参考文献

被引文献

相似文献

巴塔哥尼亚北部冰原是世界上最主要的冰川地貌,其纬度(S)为46.5°-47.5°,其冰川历史为恢复南半球古气候提供了独特的信息。科洛尼亚冰川是最大的出口冰川,排出了东部的NPI。年龄测定采用树枝年代学、地衣计量学、放射性碳法、宇宙学、10Be和光激发发光法。科罗尼亚河谷的冰期冰川定义的前进量分别为13.2 ± 0.95、11.0 ± 0.47和4.96 ± 0.2 1 ka,后者是直接断代地貌对新冰川作用开始的第一个制约。在科洛尼亚冰川扩张时期包含一个冰堰湖的支流纪念碑山谷测年确定了大约2.95 ± 0.21 ka的进动,810 ± 49 a BP和245Cal± 13 a BP的进动周期,以及在中间时期的后退。最近的科洛尼亚冰川减薄,开始于19世纪末,为1960年左右的拉戈卡西多斯打开了一个较低海拔的出口通道。我们的数据提供了单个NPI出口冰川最全面的最新更新世和全新世年龄,并扩展了以前开发的NPI冰川年代学。
The Northern Patagonia Icefield (NPI) is the primary glaciated terrain worldwide at its latitude (46.5–47.5°S), and constraining its glacial history provides unique information for reconstructing Southern Hemisphere paleoclimate. The Colonia Glacier is the largest outlet glacier draining the eastern NPI. Ages were determined using dendrochronology, lichenometry, radiocarbon, cosmogenic 10Be and optically stimulated luminescence. Dated moraines in the Colonia valley defined advances at 13.2 ± 0.95, 11.0 ± 0.47 and 4.96 ± 0.21 ka, with the last being the first constraint on the onset of Neoglaciation for the eastern NPI from a directly dated landform. Dating in the tributary Cachet valley, which contains an ice‐dammed lake during periods of Colonia Glacier expansion, defined an advance at ca. 2.95 ± 0.21 ka, periods of advancement at 810 ± 49 cal a BP and 245 ± 13 cal a BP, and retreat during the intervening periods. Recent Colonia Glacier thinning, which began in the late 1800s, opened a lower‐elevation outlet channel for Lago Cachet Dos in ca. 1960. Our data provide the most comprehensive set of Latest Pleistocene and Holocene ages for a single NPI outlet glacier and expand previously developed NPI glacial chronologies.
DOI: 10.1016/j.epsl.2011.06.018
发表时间: 2011-09-01
影响因子: 5.3
作者:
Kaplan, Michael R.;Strelin, Jorge A.;Travis, Scott G.
通讯作者: Travis, Scott G.
南巴塔哥尼亚冰原拉戈阿根廷盆地的全新世冰川历史
DOI: 10.1016/j.quascirev.2014.06.026
发表时间: 2014
影响因子: 4
作者:
Strelin, Jorge A.;Kaplan, Michael R.;Vandergoes, Marcus J.;Denton, George H.;Schaefer, Joerg M.
通讯作者: Schaefer, Joerg M.
DOI: 10.1130/g21144.1
发表时间: 2004-12
期刊: Geology
影响因子: 5.8
作者:
D. Douglass;B. Singer;M. Kaplan;R. P. Ackert;D. Mickelson;M. Caffee
通讯作者: D. Douglass;B. Singer;M. Kaplan;R. P. Ackert;D. Mickelson;M. Caffee
巴塔哥尼亚O-同位素第二阶段千年尺度冰川进展的宇宙成因核素年代学
DOI: --
发表时间: 2004
影响因子: 4.9
作者:
Kaplan, M.R.
通讯作者: Kaplan, M.R.