Northern Iranian loess and its palaeoclimatic implication

伊朗北部的黄土记录反映了中晚第四纪气候变化和景观演变的多个周期。黄土/古土壤序列是该地区最重要的气候变化地质档案，是连接东南欧和中亚黄土沉积的重要纽带。我们目前对伊朗北部黄土的形成、气候指示和地质年代学的认识需要用更复杂的方法来验证，将年代学框架扩展到中更新世。我们将揭示伊朗北部气候变化的幅度和频率，对以前检查过的和新的黄土剖面采用综合多代理方法。多代理方法将探索降水、温度和风速在岩石磁性代理、粒度和风化强度指标的高分辨率研究中的波动。将根据新的发光方法，如高温下的ir后IRSL和古地磁数据，建立伊朗北部黄土关键剖面更精确的年代框架。预计将获得大尺度地层对比和气候重建的重要数据，包括寒冷阶段极锋的南移。

The loess record of Northern Iran reflects numerous cycles of climate change and landscape evolution for the Middle to Late Quaternary period. The loess/palaeosol sequences represent the most important geoarchive of climate change in the region and provide an important link between loess deposits in Southeastern Europe and Central Asia. Our present understanding on the formation, climate indication and geochronology of northern Iranian loesses shall be verified with more sophisticated methods extending the chronological framework towards the Middle Pleistocene. We will unravel the amplitudes and frequencies of climate change in Northern Iran applying a comprehensive multi-proxy approach to previously examined and new loess sections. The multi-proxy approach will explore fluctuations of precipitation, temperature and wind speed in high resolution studies of rock magnetic proxies, granulometry and indicators of weathering intensity. A more precise chronological framework for loess key sections of Northern Iran will be established as based on new luminescence methods, such as post-IR IRSL at elevated temperatures and palaeomagnetic data. Seminal data is expected for large-scale stratigraphic correlations and climate reconstructions including the southern movement of the polar front during cold stages.