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.

近年来，由于气候学、演化、地球动力学和植被动力学等许多过程都是在100 kyrs的时间尺度上进行的，因此，以过程为导向的研究增加了对大陆沉积物精确时间框架的需求。然而，目前的陆地新近纪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的北阿尔卑斯前陆盆地（NAFB）最年轻的沉积物（小于14 Ma）来说，这一点尤其如此。重要的全球和区域过程发生在这段时间内，其速率和控制机制仍然没有得到充分的理解（即。中新世气候适宜期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、波希米亚地块和东阿尔卑斯山的隆起、盆地水系由东西向变为东西向、欧洲水文循环的大规模波动、第一批原始人类向欧洲的移民）。该项目的主要目标是为1400万年至900万年的时间间隔制定一个高分辨率的NAFB地质年代学（~100 kyr）。为了实现这一目标，生物，岩石和磁性地层学的整合是必需的，即建立一个分类-范围-分区的基础上进化谱系的小型哺乳动物和相关的当地生物磁性地层全球极性时间尺度。通过提供高分辨率的年代学来理解造山带、盆地演化、沉积学、生物演化和气候之间的因果关系，预期获得的知识对于持续的古生物学、气候学和地质学问题至关重要。