Drilling Overdeepened Alpine Valleys (DOVE): The Tannwald core

过度加深的构造出现在过去受冰川影响的地区。当它们到达河流基准面以下时，它们被解释为可能是由加压的冰下融水形成的。过深构造的沉积充填物是环境和冰川史的优秀档案，但到目前为止，受到的科学关注相对较少。DOVE(钻探过深高山山谷)是2021年启动的国际大陆钻探计划(ICDP)内的一个项目。该项目的目的是调查整个阿尔卑斯山前陆沿线的几个互补地点，最终提供过度加深结构的分布、几何形状和时代的全面图景。DOVE第一阶段的重点是北部前陆，根据以前的钻孔和地球物理数据，根据沉积填充的复杂性选择了七个钻探地点。本项目的重点是位于康斯坦茨湖以北的坦瓦尔德遗址，该遗址于2021年取芯。贝内特·舒斯特的博士项目对岩心进行了研究，他还重点研究了所有鸽子遗址的直径的性质和特定的相。这里要求延长三个月的资金，因为取心作业的大幅延迟减少了数据产生、分析和解释的时间，使其低于关键的垃圾桶。

Overdeepened structures occur in areas formerly affected by glaciations in the past. As they reach below the fluvial base level, they are interpreted as presumably have formed by pressurized subglacial meltwater. The sedimentary fill of overdeepened structures are excellent archives of the environmental and glaciation history but have received relatively little scientific attention so far. DOVE (Drilling Overdeepened alpine Valleys) is a project within the International Continental Drilling Program (ICDP) that was initiated in 2021. The aim of the project is to investigate several complementary sites along the foreland of the entire Alps, to ultimately provide a comprehensive picture of the distribution, geometry, and age of overdeepened structures. DOVE Phase-1 focusses on the northern foreland where seven drill sites have been selected based on the complexity of the sedimentary infill, as known from previous boreholes and geophysical data. The focus of the present project is the site of Tannwald, situated north of Lake Constance, that was cored in 2021. The core is investigated with the PhD project of Bennet Schuster, who also focusses on the nature and specific facies of diamicts from all DOVE sites. Requested here is a three month extension of funding as substantial delays in the coring operations have cut the time for data production, analyses, and interpretation below a critical trash-hold.