Drilling Overdeepened Alpine Valleys (DOVE): The Tannwald core

钻探过深的高山山谷 (DOVE)：坦瓦尔德 (Tannwald) 核心

• 批准号: 450654078
• 负责人: Professor Dr. Frank Preusser
• 金额: --
• 依托单位: Institut für Geologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/450654078?language=en
• 关键词: Drilling; Overdeepened; Alpine; Valleys; DOVE

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.

过度加深的结构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。过度加深结构的沉积填充物是环境和冰川历史的极好档案，但迄今为止受到的科学关注相对较少。 DOVE（过度加深高山山谷钻探）是国际大陆钻探计划 (ICDP) 内的一个项目，于 2021 年启动。该项目的目的是调查整个阿尔卑斯山前陆的几个互补地点，最终提供过度加深结构的分布、几何形状和年龄的全面信息。 DOVE 第一阶段重点关注北部前陆，根据之前的钻孔和地球物理数据可知，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 (Tannwald) 遗址，该遗址于 2021 年取芯。该岩心由 Bennet Schuster 的博士项目进行了研究，他还重点研究了所有 DOVE 遗址的硬岩的性质和特定相。这里要求将资金延长三个月，因为取芯作业的严重延误导致数据生产、分析和解释的时间缩短到低于关键垃圾库的时间。