首页 | 本学科首页   官方微博 | 高级检索  
     


Fluctuations of the Fennoscandian Ice Sheet recorded in the anisotropy of magnetic susceptibility of periglacial loess from Ukraine
Authors:Jerzy Nawrocki,Andrij B. Bogucki,Petro Gozhik,Maria &#x  anczont,Magdalena Pa&#x  czyk,Karol Standzikowski,Maryna Komar,Olga Rosowiecka,Olena Tomeniuk
Affiliation:Jerzy Nawrocki,Andrij B. Bogucki,Petro Gozhik,Maria Łanczont,Magdalena Pańczyk,Karol Standzikowski,Maryna Komar,Olga Rosowiecka,Olena Tomeniuk
Abstract:The azimuth of imbrication of minimum magnetic susceptibility axes in the youngest loess from Ukraine defines prevailing wind directions during aeolian sedimentation. It changes along the studied sections. These changes can be directly correlated with the fluctuations of the Fennoscandian Ice Sheet. The northern and northeastern winds noted in the loess succession separated by a period when southwestern to southeastern winds were predominant may be correlated with two main phases of ice‐sheet advance during the Last Glacial Maximum. The ice‐sheet advances towards the areas of loess deposition generated katabatic winds that influenced aeolian sedimentation in the periglacial zone. A period of relatively stable wind directions during a younger phase of the Last Glacial Maximum was interrupted by periods with more chaotic wind regime most probably caused by fluctuations of the Fennoscandian Ice Sheet during its retreat from the peri‐Baltic part of Europe. These intervals occur where initial soils developed. The distribution of anisotropy of magnetic susceptibility axes defined along the periglacial loess sections from central and eastern Europe can serve to constrain fluctuations of the Fennoscandian Ice Sheet.
Keywords:
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号