Forcing of carbonate mounds and deep water coral reefs along the NW European continental margin

迫使欧洲西北部大陆边缘的碳酸盐丘和深水珊瑚礁

• 批准号: 5393150
• 负责人: Professor Dr. Wolf-Christian Dullo
• 金额: --
• 依托单位: GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2003
• 资助国家: 德国
• 起止时间: 2002-12-31 至 2006-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5393150?language=en
• 关键词: Forcing; carbonate; mounds; deep; water

Recent discoveries of carbonate mounds covered with cold water corals and related benthic communities along the NE Atlantic Ocean continental margin (Porcupine Bight and north of Porcupine Bank, southeast and southwest Rockall Trough Margin, Norwegian Margin) and of actively venting mud volcanic areas along the continental margin surrounding the Gulf of Cadiz associated with authigenic carbonate crust formation and deep-water reef-like coral build-ups and carbonate chimneys margin, Galicia Bank as well as new discoveries of fossil and recent reef structures in the Mediterranean, raises the question of their origin and development. A major objective of the proposed studies therefore is to establish the forcing conditions of carbonate mound formation and to test the hypothesis of a possible linkage between cold seeps and the development of carbonate mounds, cold water benthic communities and authigenic carbonate formation. This proposal is further directed towards a definition of the geological, geochemical and oceanographical conditions and processes forcing the development of carbonate mounds and establishing the benthic ecology and environmental conditions of carbonate mound and cold water coral reef formation in contrasting areas of the NE Atlantic Ocean and Mediterranean Sea. A third objective is to establish the factors governing lithification and stabilisation of carbonate mounds, and to use these as modern analogues of fossil carbonate build ups. Comparison between recent and past mound forcing conditions will allow development of a model of mound genesis in relation to tectonic, sedimentological, oceanographical and biological extant conditions.

最近发现了沿东北大西洋大陆边缘（豪猪湾和豪猪浅滩北部、罗卡尔海槽边缘东南部和西南部、挪威边缘）覆盖着冷水珊瑚和相关底栖群落的碳酸盐丘，以及沿大陆边缘的活跃喷发的泥火山区加的斯湾周围的边缘与自生碳酸盐结壳形成和深水礁状珊瑚堆积以及碳酸盐烟囱边缘、加利西亚浅滩以及地中海化石和近期珊瑚礁结构的新发现提出了它们的起源和发展问题。因此，拟议研究的一个主要目标是建立碳酸盐丘形成的强迫条件，并检验冷泉与碳酸盐丘、冷水底栖群落和自生碳酸盐形成之间可能存在联系的假设。该提案进一步旨在定义迫使碳酸盐丘发展的地质、地球化学和海洋学条件和过程，并确定大西洋东北部和冷水区对比区域碳酸盐丘和冷水珊瑚礁形成的底栖生态和环境条件。地中海。第三个目标是确定控制碳酸盐丘的岩化和稳定的因素，并将其用作化石碳酸盐堆积的现代类似物。最近和过去的土丘强迫条件之间的比较将有助于开发与构造、沉积学、海洋学和生物现存条件相关的土丘成因模型。