Drilling Overdeepened Alpine Valleys (DOVE): The Tannwald core

过深构造出现在过去曾受冰川作用影响的地区。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。过深构造沉积充填体是环境史和冰川史的优秀档案，但迄今为止受到的科学关注相对较少。DOVE（钻井超深高山山谷）是国际大陆钻井计划（ICDP）的一个项目，于2021年启动。该项目的目的是沿着整个阿尔卑斯山的前陆调查几个互补的地点，最终提供一个全面的分布、几何形状和年龄的过深结构的图片。根据之前的钻孔和地球物理数据，根据沉积充填物的复杂性，DOVE第一阶段的重点是北部前陆，在那里选择了7个钻探点。目前项目的重点是位于康斯坦茨湖北部的坦瓦尔德基地，该基地于2021年建成。贝内特·舒斯特（Bennet Schuster）的博士项目对核心进行了调查，他还专注于所有DOVE地点的钻石的性质和特定相。由于取心作业的严重延误，减少了关键垃圾仓以下数据生成、分析和解释的时间，因此要求将资金延长三个月。

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.