Mechanism of varve formation and paleoenvironmental research at Lake Bolterskardet, Svalbard, the Arctic
文献类型：期刊论文
| 作者 | Chu Guoqiang; Liu Jiaqi; Gao Denyi; Sun Qing |
| 刊名 | ACTA GEOLOGICA SINICA-ENGLISH EDITION
 |
| 出版日期 | 2006-08-01 |
| 卷号 | 80期号:4页码:557-563 |
| ISSN号 | 1000-9515 |
| 关键词 | Arctic sediments varves paleoclimate summer temperature |
| 文献子类 | Article |
| 英文摘要 | On the basis of observation of thin sections and 137Cs data, laminations in sediment are interpreted to be varves in Bolterskardet Lake (78 degrees 06' N, 16 degrees 01' E), Svalbard, the Arctic. Varves appear under a petrologic microscope as couplets of dark-silt and light-clay layers. The mechanism of varve formation is surmized as follows: each silt layer is the production of sediment inflow interpreted as mainly derived from snowmelt during summer; each clay layer was deposited in a stillwater environment during an ice-cover period. A light-clay layer provides an important index bed to identify the annual interface. The high accumulation rates, long period of ice cover, and topographically closed basin are probably all critical factors in forming and preserving varves. Varve thickness is known to be controlled mainly by summer temperature. The variation of varve thickness in Lake Bolterskardet can then be used to reconstruct summer temperature. The varve series show that there has been distinct decade-scale variability of summer temperature over the past 150 years. Warm periods occurred in the 1860s, around 1900, the 1930s, 1950s, and 1970s, and in the last 20 years. The varved sediments of Lake Bolterskarde preserve an ideal record for high-resolution paleoclimatic and paleoenvironmental research in this data-sparse area. |
| WOS关键词 | BAFFIN-ISLAND ; BARENTS SEA ; ICE CORES ; SEDIMENTS ; CANADA ; CLIMATE ; RECORD ; EXTENT ; SPITSBERGEN ; PLATEAU |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | GEOLOGICAL SOC CHINA |
| WOS记录号 | WOS:000240249700012 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/66988]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Chu Guoqiang |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Atmospher Phys, Beijing 100029, Peoples R China 3.Geol Anal Ctr, Beijing 100037, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chu Guoqiang,Liu Jiaqi,Gao Denyi,et al. Mechanism of varve formation and paleoenvironmental research at Lake Bolterskardet, Svalbard, the Arctic[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2006,80(4):557-563. |
| APA | Chu Guoqiang,Liu Jiaqi,Gao Denyi,&Sun Qing.(2006).Mechanism of varve formation and paleoenvironmental research at Lake Bolterskardet, Svalbard, the Arctic.ACTA GEOLOGICA SINICA-ENGLISH EDITION,80(4),557-563. |
| MLA | Chu Guoqiang,et al."Mechanism of varve formation and paleoenvironmental research at Lake Bolterskardet, Svalbard, the Arctic".ACTA GEOLOGICA SINICA-ENGLISH EDITION 80.4(2006):557-563. |
入库方式： OAI收割
来源：地质与地球物理研究所
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