The Holocene neritic carbonates of Western Mediterranean Sea

西地中海全新世浅海碳酸盐岩

• 批准号: 50930337
• 负责人: Professor Dr. Christian Betzler
• 金额: --
• 依托单位: Leitstelle Deutsche Forschungsschiffe
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2007
• 资助国家: 德国
• 起止时间: 2006-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/50930337?language=en
• 关键词: Holocene; neritic; carbonates; Western; Mediterranean

The objective of this study is to present key models for cool-water carbonates, and to document the reaction of these systems to Holocene paleoclimatic and sea-level change. This will be achieved through an interdisciplinary analysis of samples and geophysical data recovered during the cruise M69/1 (Western Mediterranean Sea). Based on sediment texture and composition, as well as macropaleontology, fades will be defined and temporal changes of fades zonations will be shown. Mapping thickness variations and sediment geometries in parasound profiles will allow to establish a sequence stratigraphic model. Linking sedimentological and geophysical data, and using absolute 14C age dates, for the first time it will be possible to produce a model of the Holocene cool-water carbonate sequence in the Mediterranean Sea. Analyses of the foraminiferal faunas and generation of planktonic and benthic stable isotope records will provide information on the impact of climatic and oceanographic changes on the neritic carbonate ecosystems and will allow the comparison of these signals with the deep-sea record. Based on Recent distribution patterns, transfer functions will be generated and applied to the sediment cores for quantitative paleobathymetric reconstructions. Linking these data with sequence stratigraphy and carbonate facies data, we will be able to separate the impact of the postglacial eustatic sealevel rise from regional neotectonic and sedimentological processes.

这项研究的目的是介绍冷水碳酸盐的关键模型，并记录这些系统对全新世古气候和海平面变化的反应。这将通过对巡航M69/1（地中海西部）期间回收的样品和地球物理数据的跨学科分析来实现。基于沉积物质地和成分以及巨大生产学，将定义褪色，并将显示淡入分区的时间变化。映射厚度的变化和瘫痪轮廓中的沉积物几何形状将允许建立序列地层模型。将沉积学和地球物理数据连接起来，并使用绝对14c年龄的日期，首次可以在地中海中产生全新世冷水碳酸盐序列的模型。对有孔虫动物区系的分析以及浮游和底栖稳定的同位素记录的产生将提供有关气候和海洋学变化对NERITIC碳酸盐生态系统的影响的信息，并将允许将这些信号与深海记录进行比较。基于最近的分布模式，将生成转移函数并应用于沉积物核，以进行定量的古血管学重建。将这些数据与序列地层学和碳酸盐相的数据联系起来，我们将能够将冰期后层状海平线的影响与区域新神经和沉积学过程区分开。