Hochauflösende Chronologie des Mittel- und Ober-Miozäns Süddeutschlands

德国南部中上新世高分辨率年表

• 批准号: 163317663
• 负责人: Professorin Dr. Madelaine Böhme
• 金额: --
• 依托单位: Sektion Geophysik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/163317663?language=en
• 关键词: Hochaufl; sende; Chronologie; des; Mittel

During the last years process-oriented research increase the needs on precise temporal framework of continental sediments, because many processes in climatology, evolution, geodynamics and vegetation dynamics proceed on a temporal scale of 100 kyrs. However, the current temporal resolution of terrestrial Neogene sediments is mostly inadequate. This is especially true for the youngest sediments (younger than 14 Ma) of the North Alpine Foreland Basin (NAFB), one of the largest Neogene basins in Europe. Important global and regional processes occur during this time span for which rates and controlling mechanisms are still inadequately understood (i.a. end of the Miocene climatic optimum and stepwise intensifica-tion of global cooling, development of open vegetation in mid-latitudes, end of the molasse sedimentation, uplift of the Bohemian Massif and the Eastern Alps, change of the basin drainage direction from E-W to W-E, large-scale fluctuation in the European hydrologic cycle, immigration of first hominids into Europe). The main objective of the project is to develop a high-resolution geochronology (~100 kyr) of the NAFB for the time interval 14 to ~9 myr. To achieve this aim an integration of bio-, litho-, and magnetostratigraphy is required, i.e. the establishment of a taxon-range-zonation based on evolutionary lineages of small mammals and the correlation of the local bio-magnetostratigraphy to the Global Polarity Time Scale. The expected gain of knowledge is crucial for continuative paleobiologic, -climatologic and geologic questions by providing a high-resolution chronology to understand causal links between orogeny, basin evolution, sedimentology, biotic evolution, and climate.

在过去的几年里，面向过程的研究增加了对大陆沉积物精确时间框架的需求，因为气候学、演化、地球动力学和植被动力学的许多过程都是在100kyr的时间尺度上进行的。然而，目前陆相新近系沉积物的时间分辨率大多是不够的。对于欧洲最大的新近纪盆地之一--北阿尔卑斯山前陆盆地(NAFB)的最年轻沉积物(小于14 Ma)来说，情况尤其如此。重要的全球和区域进程发生在这段时间内，对这些进程的比率和控制机制仍未充分了解(即：中新世气候最佳时期的结束和全球变冷的逐步加剧、中纬度开阔植被的发展、磨拉石沉积的结束、波希米亚地块和东部阿尔卑斯山的抬升、盆地排水方向从东西向向西-E的转变、欧洲水文循环的大范围波动、第一批原始人进入欧洲)。该项目的主要目标是开发14至9 MYR时间间隔的NAFB的高分辨率地质年代学(~100 KYR)。为了实现这一目标，需要整合生物地层学、岩性地层学和磁学地层学，即根据小型哺乳动物的进化谱系建立一个分类单元-山脉分区，并将当地生物磁地层学与全球极地时间尺度相关联。通过提供高分辨率的年代学来理解造山作用、盆地演化、沉积学、生物演化和气候之间的因果联系，预期的知识获得对于持续的古生物学、气候学和地质学问题至关重要。