Collaborative Research: RUI: A High resolution Paleontological, Ichnological, and Chemostratigraphic Study of Late Devonian Mass Extinctions

合作研究：RUI：晚泥盆世大规模灭绝的高分辨率古生物学、技术学和化学地层学研究

• 批准号: 1348981
• 负责人: Diana Boyer
• 金额: $ 5.25万
• 依托单位: SUNY College at Oswego
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-05-01 至 2016-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1348981&HistoricalAwards=false
• 关键词: Collaborative; Research; RUI; resolution; Paleontological

RUI, Collaborative Research: A High resolution Paleontological, Ichnological, and Chemostratigraphic Study of Late Devonian Mass ExtinctionsbyDiana Boyer, EAR-1348981, SUNY OswegoGordon Love, EAR-1348988, Univ. California, RiversideABSTRACTThe rock record preserves a detailed history of past events in life history, and understanding these events, particularly episodes of unusual biotic turnover, is of paramount importance, particularly in this time of our current diversity crises. There have been many large scale extinction events throughout geologic history, and despite extensive study, the Late Devonian mass extinction events in the Frasnian-Famennian still remain enigmatic in terms of a causal mechanism. Although numerous kill mechanisms have been proposed, marine anoxia is widely thought to be a major contributing factor, in part because of the pervasiveness of organic-rich black shale. This study will test for extensive anoxic and/or pervasive euxinic (sulfidic water column) conditions associated with several biotic turnover events preserved in a Laurentian basin. PIs will use an integrated paleontological, inorganic geochemical, and lipid biomarker approach performed at high spatial resolution to reconstruct secular changes in ancient microbial and metazoan source organism inputs, and marine redox structure in these ancient epeiric seaways. They will test for a correlation between the magnitude and timing of extinction events and patterns of oxygen and euxinic stress which prevailed.The utility of combining paleontological and geochemical proxies to recognize bottom water oxygen levels on a fine-scale in black shale facies has been realized (Boyer et al., 2011), but not yet applied to understand the dynamics of major events in the history of life. The new light we are shedding on Late Devonian biospheric and environmental evolution in North America will inform and direct future work in biogeochemistry, paleontology/paleobiology, evolutionary biology, and ocean-atmosphere evolution. Central to this research is a unique bridging of organic and inorganic geochemical methods with paleontology within a broad field-based template to yield high-resolution bio- and chemostratigraphic records that span the Late Devonian mass extinction events and their aftermath. At the heart of this research proposal is the training and education of a group of talented graduate, undergraduate and K-12 school students in the geosciences at UCR and SUNY Oswego, many from underrepresented ethnic groups, through a combination of direct involvement in the research project or through a variety of outreach ventures.

Rui，合作研究：一项高分辨率的古生物学，流感学和化学地层学研究，对泥盆纪晚期大规模灭绝Boyer，EAR-1348981，SUNY OSWEGOGORDON LOVE，EAR-1348988，UNIV。加利福尼亚，Riversideabstrackttractthe Rock Record保留了生活历史上过去事件的详细历史，并且了解这些事件，尤其是不寻常的生物流动的情节，至关重要，尤其是在我们当前的多样性危机时期。整个地质史上都有许多大规模的灭绝事件，尽管进行了广泛的研究，但弗拉斯尼亚 - 法尼（Frasnian-Famennian）的晚期泥盆纪巨大灭绝事件在因果机制方面仍然仍然是神秘的。 尽管已经提出了许多杀戮机制，但海洋缺氧被普遍认为是主要的促成因素，部分原因是有机丰富的黑色页岩的普遍性。这项研究将测试与劳伦斯盆地中保留的几个生物周转事件相关的广泛的缺氧和/或普遍的光生（硫化水柱）条件。 PI将使用以高空间分辨率进行的综合古生物学，无机地球化学和脂质生物标志物方法来重建古代微生物和后生源的生物体输入中的世俗变化，以及这些古老的高层海道中的海洋氧化还原结构。他们将测试在灭绝事件的大小和时间和时间之间的相关性，氧气和活力的压力是盛行的。将古生物学和地球化学代理相结合以在黑色页岩相的细尺度上识别底部水的氧气水平的实用性已实现（Boyer等人，2011年），但尚未适用于活动的事件。我们在北美晚期泥盆纪生物圈和环境进化方面的新光线将为生物地球化学，古生物学/古生物学，进化生物学和海洋 - 大气进化的未来工作提供信息。这项研究的核心是在广泛的基于田间的模板中使用古生物学的有机和无机地球化学方法的独特桥接，以产生跨越泥盆纪晚期质量灭绝事件及其后果的高分辨率的生物和化学学记录。这项研究建议的核心是在UCR和SUNY OSWEGO的地球科学的一群才华横溢的研究生，本科和K-12学校学生的培训和教育，其中许多来自代表性不足的族裔，通过直接参与研究项目或通过各种外展企业的直接参与。