Modern processes and Quaternary climatic and environmental changes in northeastern Siberia, deduced from multidisciplinary analyses of sediments from Lake El'gygytgyn

该项目是对ICDP资助的El‘gytgyn湖钻井项目的贡献，El’gytgyn湖位于西伯利亚东北部一个3.6 Ma的古老陨石坑内。该倡议旨在钻探冲击岩和上覆湖泊沉积序列，以重建冲击事件和上新世晚期和第四纪的气候和环境历史。作为钻探活动现场前调查的一部分，于2003年采集了沉积物样本。虽然这个DFG项目的第一个月主要关注最后340 ka期间的湖泊历史，但第二年将接近全新世和末次冰盛期的详细记录。此外，必须解决一个新认识的问题，即有关冷期沉积物形成的问题。对这些沉积过程的了解对于进一步研究ICDP-钻井项目将获得的较老的湖泊沉积物至关重要。

This project is a contribution to the ICDP funded drilling project at Lake El´gygytgyn, a lake located in a 3.6 Ma old meteorite impact crater in north-eastern Siberia. The initiative aims drilling of the impact rocks and overlying lake sediment succession to reconstruct the impact event and the Late-Pliocene and Quaternary climatic and environmental history. As part of a pre-site survey for the drilling campaign, sediment samples were recovered in 2003. While the first months of this DFG-project mainly focused on the lake history during the last 340 ka, the second year will approach a detailed record of the Holocene and the Last Glacial Maximum. Additionally, a newly recognised problem, dealing with the formation of cold stage sediments, has to be solved. The understanding of these sedimentation processes is crucial for further investigations of older lake sediments that will be obtained by the ICDP-drilling Project.