Arid
DOI10.1016/j.epsl.2017.12.027
Middle-to-late Holocene palaeoenvironmental reconstruction from the A294 ice-cave record (Central Pyrenees, northern Spain)
Sancho, Carlos1; Belmonte, Anchel1; Bartolome, Miguel1,2; Moreno, Ana2; Leunda, Maria2; Lopez-Martinez, Jeronimo3
通讯作者Sancho, Carlos
来源期刊EARTH AND PLANETARY SCIENCE LETTERS
ISSN0012-821X
EISSN1385-013X
出版年2018
卷号484页码:135-144
英文摘要

Perennial ice deposits in caves represent unique, but underexplored, terrestrial sequences that potentially contain outstanding palaeoclimatic records. Here, we present a pioneer palaeoenvironmental study of an ice deposit preserved in a small sag-type cave (A294) in the Central Pyrenees (northern Iberian Peninsula). The 9.25-m-thick sequence, which is dated from 6100 +/- 107 to 1888 +/- 64 cal BP, represents the oldest known firn ice record worldwide. The stratigraphy (detrital layers, unconformities, and cross stratification), plant macrofossils, and isotopic signature (similarity between the ice linear distribution, delta H-2 = 7.83 delta O-18 + 8.4, and the Global Meteoric Water Line) of the ice point to the diagenesis of snow introduced to the cave by winter snowstorms. Four phases of rapid ice accumulation (6100-5515, 4945-4250, 3810-3155, and 2450-1890 cal BP) are related to wetter and colder winters. Comparison of the isotopic composition (delta O-18 and deuterium excess) of the ice with other paleoclimate records show that both source effects and the North Atlantic Oscillation (NAO) mechanism exert a dominant influence on the ice cave record. The NAO signal may be a combination of source effects and rainfall amount. Three intervals with low ice accumulation occurred between the phases of rapid accumulation and were related to drier, and possibly warmer, winters. These centennial-scale episodes appear to be in-phase with regional arid events, as established from high altitude lacustrine records and can be correlated to global Rapid Climate Change events. The current warming trend has dramatically decreased the volume of the ice deposit in cave A294. (C) 2017 Elsevier B.V. All rights reserved.


英文关键词firn ice cave radiocarbon dating isotopic composition Holocene climate Central Pyrenees
类型Article
语种英语
国家Spain
收录类别SCI-E
WOS记录号WOS:000424726000012
WOS关键词CLIMATE VARIABILITY ; ATLANTIC OSCILLATION ; MEDITERRANEAN REGION ; SOUTHERN PYRENEES ; EASTERN SPAIN ; MOUNTAINS ; PRECIPITATION ; DYNAMICS ; AUSTRIA ; 1ST
WOS类目Geochemistry & Geophysics
WOS研究方向Geochemistry & Geophysics
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/208594
作者单位1.Univ Zaragoza, Pedro Cerbuna 12, E-50009 Zaragoza, Spain;
2.CSIC, Inst Pirenaico Ecol, Avda Montanana 1005, Zaragoza 50059, Spain;
3.Univ Autonoma Madrid, Fac Ciencias, E-28049 Madrid, Spain
推荐引用方式
GB/T 7714
Sancho, Carlos,Belmonte, Anchel,Bartolome, Miguel,et al. Middle-to-late Holocene palaeoenvironmental reconstruction from the A294 ice-cave record (Central Pyrenees, northern Spain)[J],2018,484:135-144.
APA Sancho, Carlos,Belmonte, Anchel,Bartolome, Miguel,Moreno, Ana,Leunda, Maria,&Lopez-Martinez, Jeronimo.(2018).Middle-to-late Holocene palaeoenvironmental reconstruction from the A294 ice-cave record (Central Pyrenees, northern Spain).EARTH AND PLANETARY SCIENCE LETTERS,484,135-144.
MLA Sancho, Carlos,et al."Middle-to-late Holocene palaeoenvironmental reconstruction from the A294 ice-cave record (Central Pyrenees, northern Spain)".EARTH AND PLANETARY SCIENCE LETTERS 484(2018):135-144.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Sancho, Carlos]的文章
[Belmonte, Anchel]的文章
[Bartolome, Miguel]的文章
百度学术
百度学术中相似的文章
[Sancho, Carlos]的文章
[Belmonte, Anchel]的文章
[Bartolome, Miguel]的文章
必应学术
必应学术中相似的文章
[Sancho, Carlos]的文章
[Belmonte, Anchel]的文章
[Bartolome, Miguel]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。