Conodont biostratigraphy, paleoecology & isotope geochemistry applied to models of early paleozoic palegeography, paleoceanography & tectono-eustacy; cenozoic offshore basins, BC

牙形刺生物地层学、古生态学

• 批准号: 46182-2008
• 负责人: Barnes, Christopher
• 金额: $ 2.9万
• 依托单位: University of Victoria
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=390594
• 关键词: Conodont; biostratigraphy; paleoecology; isotope; geochemistry

One long-term objective is to contribute toward the understanding of biological and physical processes operating on the Earth during the Early Paleozoic (550-350 million years), especially the events and controls that led to the profound replacement of the Cambrian Evolutionary Fauna by the Paleozoic Evolutionary Fauna and the early diversification of the latter. The principal approach is to use conodont microfossils through integrated, sequential studies of taxonomy, biostratigraphy, paleoecology, biogeography, and isotope geochemistry, using collections from the principal paleoplates. Many projects are designed to establish faunal changes along environmental gradients (e.g. platform to basin transects) with studies in the Appalachians, Cordillera and Innuitian margins now to be integrated with new ones on intracratonic and foreland basins of the interior craton. These will allow a refined analysis of the bioevents and related stratigraphic, tectonic and sea level events for the Laurentian plate during much of the Early Paleozoic. Projects will be expanded that deal with strontium and oxygen isotopes and Ca/Mg ratios from conodonts; geochemical research is investigating changes in seawater history and testing existing models of paleogeography. Particular consideration is given to exotic terranes as well as the main paleoplates. The research will lead to significant advances in conodont phylogeny, cladistics, biostratigraphy, paleoecology and paleobiogeography and will link the existing large faunal database to paleoceanographic and paleoclimatic models to interpret the nature and changes in the Early Paleozoic biosphere-ocean-climate system. Similar basin studies are underway for the Tofino Basin, offshore BC, and will be expanded to the Queen Charlotte basin, using foraminifera and ichthyolith micropaleontology and isotope geochemistry to understand the complex Cenozoic basin evolution.

一个长期目标是在早期古生代（550-3.50亿年）中对在地球上运行的生物学和物理过程的理解做出贡献，尤其是事件和控制，导致了导致寒武纪进化动物群的深入替代。古生代进化动物群和后者的早期多样化。主要方法是使用主要古层的综合研究，对分类法，生物地层学，古生物学，生物地理学和同位素地球化学的综合，顺序研究，使用主要古层的收集。许多项目旨在通过在阿巴拉契亚群岛，科迪勒拉和无关的边缘进行研究沿环境梯度（例如平台到盆地样品的平台）建立动物变化，现在可以与内部克拉顿内部室内和前盆地盆地的新盆地融合在一起。这些将允许在早期大部分古生代期间对Laurentian板块的生物事件以及相关的地层，构造和海平面事件进行完善的分析。将扩大涉及牙齿肌畸形和氧同位素和Ca/mg比率的项目；地球化学研究正在研究海水历史的变化，并测试现有的古地理模型。特别考虑异国情调的地形以及主要古层。这项研究将导致牙形特系统发育，拟层，生物地层学，古生物学和古地理学的显着进步，并将将现有的大型动物数据库与古生物学和古气候模型联系起来，以解释早期古生代生物圈气候早期生物圈气候气候系统的性质和变化。 托菲诺盆地，海上不列颠哥伦比亚省也正在进行类似的盆地研究，并将使用有孔虫和鱼质微石材结构病和同位素地球化学来了解复杂的新生代盆地进化。