Northern Iranian loess and its palaeoclimatic implication

伊朗北部的黄土记录反映了第四纪中后期气候变化和地貌演变的无数周期。黄土/古土壤序列代表了该区域最重要的气候变化地质档案，并为东南欧和中亚的黄土沉积提供了重要的联系。我们目前对伊朗北部黄土的形成、气候指示和年代学的理解将用更复杂的方法来验证，将年代学框架延伸到中更新世。我们将对伊朗北部的气候变化的幅度和频率进行研究，对以前研究过的和新的黄土剖面采用综合的多代理方法。多代理方法将在岩石磁性代理、粒度测量和风化强度指示器的高分辨率研究中探索降水、温度和风速的波动。将根据新的发光方法，如高温后红外红外光谱和古地磁数据，为伊朗北部的黄土关键地段建立更精确的年代学框架。开创性的数据有望用于大规模的地层对比和气候重建，包括极地锋在寒冷阶段的南移。

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.