Cenozoic development of the depositional environment in the northern Cape Basin in relation to the Initiation of Northern Hemisphere Glaciation

北开普盆地新生代沉积环境的发展与北半球冰川作用的起始

• 批准号: 5434698
• 负责人: Dr. Gabriele Uenzelmann-Neben
• 金额: --
• 依托单位: Sektion Geophysik
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2004
• 资助国家: 德国
• 起止时间: 2003-12-31 至 2007-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5434698?language=en
• 关键词: Cenozoic; development; depositional; environment; northern

The Northern Hemisphere Glaciation modified the global current system leading also to changes in the local current situation in the Cape Basin. This interaction of climate and oceanic currents left a significant imprint in the sedimentary structures along the continental margin of southwestern Africa. Additionally, tectonic movements shaped the sedimentary sequences. To gain an understandig about the influence of the different factors on the build up and composition of the sedimentary layers in the Cape Basin the (a) spatial distribution of seismostratigraphics units (event horizons), (b) physical and chemical properties of sediments at event horizons, and (c) climate information of the hinterland need to be extracted from seismic profiles and sedimentological parameters. The combination of reflection seismic records with drill site information assited by palynological data will provide a comprehensive information of the sedimentary regime in the Cape Basin and elucidates the affect to Initiation of Northern Hemisphere Glaciation to depositional environment even located far away in the South.

北半球冰川改变了全球洋流系统，也导致了开普敦盆地局部洋流状况的变化。气候和洋流的相互作用在非洲西南部大陆边缘的沉积构造中留下了显著的印记。此外，构造运动塑造了沉积序列。为了了解不同因素对开普敦盆地沉积层的建立和组成的影响，需要从地震剖面和沉积学参数中提取(A)地震地层单位(事件层)的空间分布，(B)事件层沉积物的物理化学性质，(C)腹地的气候信息。结合反射地震记录和钻井现场信息，结合孢粉资料，将提供开普敦盆地沉积体制的全面信息，阐明北半球冰川作用对北半球冰川启动的影响，即使在遥远的南方也是如此。