Late Quaternary Vegetation History and Depositional Environment of the Yedoma Sections of the Lower Kolyma; Northeast Siberia - Feasibility Study

科雷马河下游耶多玛地段晚第四纪植被历史和沉积环境；

• 批准号: 9500240
• 负责人: Wendy Eisner
• 金额: $ 1.5万
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-11-15 至 1995-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9500240&HistoricalAwards=false
• 关键词: Late; Quaternary; Vegetation; History; Depositional

This award supports a study of paleobotanical material in Holocene peat from northeastern Siberia. At present, there is little information about past climatic and environmental conditions in this part of Russia. This work focuses on samples from the lower Kolyma River terrace deposits, called Yedoma deposits, which have been dissected by thermokarst activity and river erosion. The deposits consist of mid to late Pleistocene silt layers capped in depressions by Holocene peat. The goal is to test the utility of these deposits for yielding proxy records of paleoclimatic and paleoenvironmental conditions. If successful this work will yield important information on the environmental history of a climatically sensitive region of the Russian northeast. This work constitutes the paleobotanical analyses of a field program funded by the National Geographic Society. This work will include analysis of pollen and spores in addition to the analysis of fungal and algal remains. This information will be a key component in reconstructing the late Pleistocene and Holocene depositional and environmental conditions of this region. In addition, this work has substantial potential for expanding understanding of a coupled high-latitude vegetation-landscape-climate system.

该奖项支持对西伯利亚东北部全新世泥炭中的古植物学物质的研究。目前，关于俄罗斯这一地区过去的气候和环境状况的信息很少。这项工作的重点是来自科里马河下游阶地沉积物的样品，这些沉积物被称为耶多玛沉积物，已经被热岩溶活动和河流侵蚀解剖。这些沉积物由中更新世至晚更新世粉砂层组成，并被全新世泥炭覆盖在凹陷中。目的是测试这些沉积物的实用性，以产生古气候和古环境条件的替代记录。如果成功，这项工作将提供有关俄罗斯东北部气候敏感地区环境历史的重要信息。这项工作构成了由国家地理学会资助的一个实地项目的古植物学分析。这项工作将包括对花粉和孢子的分析，以及对真菌和藻类遗骸的分析。这些信息将是重建该地区晚更新世和全新世沉积和环境条件的关键组成部分。此外，这项工作对于扩大对高纬度植被-景观-气候耦合系统的理解具有很大的潜力。