Shallow-water carbonate response to climatic events: sedimentological, paleoecological and chemostratigraphic approaches to foraminiferal biocalcification during the Paleogene in the Thetyan realm (Dinarids and Oman)

浅水碳酸盐对气候事件的响应：塞提亚地区古近纪期间有孔虫生物钙化的沉积学、古生态学和化学地层学方法（迪纳里德和阿曼）

• 批准号: 19534048
• 负责人: Professorin Dr. Maria Mutti
• 金额: --
• 依托单位: Institut für Geowissenschaften
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2009-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/19534048?language=en
• 关键词: Shallow; water; carbonate; response; climatic

The early Paleogene was the warmest time during the Cenozoic recording several significant climatic events (Zachos et al., 2001). This warm period coincided with major perturbations of the carbon cycle at different temporal scales. Many studies have focused on deep-sea sediments as record of these changes. However, only few studies have focused on the link between these global physical-chemical changes of seawater and shallow marine biota evolution during the Paleocene-Eocene time. We propose to examine the response of shallow water ecosystems to these paleoenvironmental changes as an important record to understand the development of early Cenozoic carbonate platforms. Though a detailed investigation of successions outcropping in NW Dinarids and Oman Mountains, as representative of circum-Tethyan platforms, we intend to verify the synchronicity of well known global climatic events. Their effects in low latitude platform facies will be examined by detailed bio-, chemo- and ecostratigraphical studies. Particularly we intend to investigate the relationship between Larger Benthic Foraminifer (LBF) evolution, the most common constituent of early Cenozoic carbonate platforms, and the major environmental and ecological parameters (e.g. water temperature, trophic regime, water chemistry). Further to address this objective we propose to apply ecological and geochemical studies of living larger foraminifera as powerful tool for the interpretation of the fossil community.

早古近纪是新生代最温暖的时期，记录了几次重要的气候事件（Zachos et al., 2001）。这一暖期与不同时间尺度上碳循环的重大扰动相吻合。许多研究都集中在深海沉积物上作为这些变化的记录。然而，关于古新世-始新世全球海水物理化学变化与浅海生物群演化之间的联系的研究很少。我们建议研究浅水生态系统对这些古环境变化的响应，作为了解早新生代碳酸盐岩台地发育的重要记录。通过对NW Dinarids和阿曼山脉（作为环特提斯台地的代表）序列露头的详细调查，我们打算验证众所周知的全球气候事件的同步性。它们对低纬度台地相的影响将通过详细的生物、化学和生态地层学研究来检验。我们特别打算研究大型底栖有孔虫（LBF）的演化与主要环境生态参数（如水温、营养状况、水化学）之间的关系。LBF是早期新生代碳酸盐台地最常见的组成部分。为了进一步实现这一目标，我们建议将大型有孔虫的生态和地球化学研究作为解释化石群落的有力工具。