Glacial erosion and paleoclimate reconstruction

对科西嘉岛冰川沉积物和边线的调查使我们能够绘制出<s:1>雷米冰川作用期间冰川的最大范围。冰川的高度达到500米，比文献记载的要深得多。此外，两代前<s:1>冰河时期的边线、岩洞、山岭和少量沉积物证明了冰川的范围甚至更广。救济显然被修改到比先前假定的更高的程度。冰川作用似乎对中新世古地表的破坏起着关键作用。另一方面，中新世古表面的高海拔遗迹显示出巨大冰原自放大积累的显著潜力。古平衡线海拔（ELA）模式的重建为研究地中海西北部<s:1>末极盛期区域气候提供了重要信息。两次前<s:1>末期最大冰川扩张可以局部受限，这为粗略估计ela降低和古地温提供了机会。如果能将最大冰川范围与w<s:1> rmian冰期旋回内几个冰川扩张的短周期中的一个联系起来，那么重建w<s:1> rmian ELA分布将提高可靠性。因此，需要建立一个坚固的冰碛沉积地层格架。因此，我们的目标是通过测定10Be宇宙形成核素的年代来确定从<s:1>残冰碛上升起的大块岩石的暴露年龄。冰川-河流阶地的年代应由发光法确定。前<s:1> <s:1>期侵蚀地貌主要由侵蚀特征的10Be宇宙成因核素定年。在更大的地理范围内，科西嘉岛对地中海西部和整个欧洲的冰川气候环境起着关键作用。在<s:1>第二代冰河时期，中欧的高压可能阻挡了向东移动的气旋，并经常将它们推向地中海西北部，在那里科西嘉岛的高山形成了水汽运输的障碍。

Investigation of glacial deposits and trimlines in Corsica enabled us to map the maximum extent of glaciers during the Würmian glaciation. Glaciers reached down to elevations of 500 m a.s.l., much deeper than documented in the literature. Moreover, two generations of pre-Würmian trimlines and roches moutonnees and few deposits prove even wider extent of glaciers. The relief was obviously modified to a higher degree than previously assumed. Glaciations appear to play a key role for the destruction of Miocene paleosurfaces. Ort the other hand, high-elevated relics of Miocene paleosurfaces display a remarkable potential for selfamplifying accumulation of large ice fields. The reconstruction of the ancient equilibrium line altitude (ELA) pattern provides important information an the regional climate during the Würmian maximum glaciation in the northwestern Mediterranean. Two preWürmian maximum glacial expansions can be locally constrained, which offer an opportunity to roughly estimate ELA-lowering and paleotemperature. A reconstruction of the Würmian ELA distribution will increase in reliability if the maximum glacier extent can be linked with one of the several short periods of glacier expansion within the Würmian glacial cycle. Thus, a robust stratigraphic framework for moraine deposits needs to be established. Therefore, we aim to determine exposure ages of large boulders rising above Würmian moraines by means of dating 10Be cosmogenic nuclides. Glaciofluvial terraces shall be dated by luminescense methods. Pre-Würmian erosional landforms shall mostly be dated by 10Be cosmogenic nuclides of erosion features. In a larger geographic frame, Corsica plays a key role for the glacial climatic setting of the western Mediterranean and Europe as a whole. High pressure in central Europe during füll glacial conditions has likely blocked eastward moving cyclons and frequently pushed them into the northwestern Mediterranean realm, where the high mountains of Corsica form an obstacle to moisture transport.