Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 41371028 |
| 东天山地区冰川地貌演化及冰期研究 | |
| 赵井东 | |
| 主持机构 | 中国科学院寒区旱区环境与工程研究所 |
| 开始日期 | 2014 |
| 结束日期 | 2017 |
| 资助经费 | 950000(CNY) |
| 项目类别 | 面上项目 |
| 资助机构 | CN-NSFC（国家自然科学基金） |
| 语种 | 中文 |
| 国家 | 中国 |
| 英文简介 | Developing an accurate and reliable chronological framework for glacial events and glacial landform evolution has traditionally been one of the most challenging problems in research in to Quaternary glaciations in China and internationally. New dating techniques, including CRN, OSL and ESR have been developed and refined over the past two decades and are now being used to provide reliable quantitative constraints on the ages of glacial sediments and landforms. Research on Quaternary glaciations has thus entered a new stage in which the emphasis is on accurate dating, with quantitative techniques augmenting conventional mapping and relative age dating. The Bogeda Peak area and the Tuomuerti Peak area are the largest centers of modern glaciation in the eastern Tianshan range in China. During Quaternary glacial-interglacial cycles these two areas were extensively and repeatedly glaciated. Spectacular landscapes, including erosional, depositional and glaciofluvial landforms from multiple glaciations are well preserved in valleys and on piedmonts. In this project we will use CRN, OSL and ESR dating techniques to determine the chronological record of glaciation preserved in these key areas. In particular we will test the hypothesis that there was a large glacial advance during middle marine oxygen isotope stage (mid-MIS) 3 that was similar in extent to the advance during the global Last Glacial Maximum (LGMG). We will also date Holocene glacier fluctuations and will use ArcGIS software and computer modeling to analyze glacial landform evolution in these two areas. Building on the achievements of traditional mapping, the addition of accurate dating will fill an important gap in research in to glacial landform evolution and Quaternary glaciations in the eastern Tianshan range, and will also provide new data for Chinese Quaternary glacial research. In addition, this study will provide results that will have important implications for palaeoclimatic modelling and palaeoenvironmental reconstructions in the Tianshan range, and that will advance understanding of tectonic uplift of the Tianshan ranges during the Quaternary. |
| 中文关键词 | 冰川地貌 ; 冰川沉积 ; 冰期旋回 ; 末次冰期 ; 宇成核素定年 |
| 来源机构 | 中国科学院西北生态环境资源研究院 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/345589 |
| 推荐引用方式 GB/T 7714 | 赵井东.东天山地区冰川地貌演化及冰期研究.2014. |
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