ELT Collaborative Research: Causes and effects of the Permian-Triassic biotic crisis inferred from continental margin sections and modeling

ELT 合作研究：从大陆边缘剖面和建模推断二叠纪-三叠纪生物危机的原因和影响

基本信息

批准号：
1636629
负责人：
Arne Winguth
金额：
$ 15.03万
依托单位：
University of Texas at Arlington
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2016
资助国家：
美国
起止时间：
2016-09-01 至 2022-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1636629&HistoricalAwards=false
关键词：
ELT Collaborative Research Causes effects

项目摘要

The end-Permian mass extinction (EPME) was the most severe biotic crisis in the past 540 million years of Earth history. This project aims to identify the timing, nature, and causes of paleoenvironmental stresses leading up to and following the EPME, focusing on well-exposed sedimentary successions exposed in eastern Australia, and supported by climate modelling studies. The project will integrate data from several disciplines to explore the hypotheses that a) the EPME was part of a longer-term crisis that followed earlier events in the Middle-Late Permian, b) the crisis was not manifested simultaneously across the paleolatitudes, and c) continental ecosystems responded to the crisis in different ways than marine ecosystems. Students will be trained and public displays will be developed at the University of Nebraska State Museum.The EPME has gained relevance as an example of an end-member ecological catastrophe that could potentially be replicated in the future. Coastal settings are among the most densely populated today, yet previous studies of the EPME have focused largely on oceanic and continental interior records. In investigating deposits that accumulated along ~2000 km of coastline spanning temperate to polar latitudes, the proposed project will improve understanding of the response of continental margins to rapid environmental change. This work will potentially transform understanding of the timeframes, driving mechanisms, global variability, and ultimate causes of the most severe global ecologic crisis of the Phanerozoic.

最后5.4亿年的地球历史上，最终的生物危机是最严重的生物危机。该项目旨在确定导致EPME之前和之后的古环境应力的时机，性质和原因，重点是在澳大利亚东部展出的暴露沉积继承，并得到气候建模研究的支持。该项目将整合来自几个学科的数据，以探讨a）EPME是长期危机的一部分，随后在中间二叠纪的早期事件中，b）危机并未同时在整个古属性的情况下同时表现出来，而c）大陆生态系统在与海洋生态系统的不同方式中对危机做出了反应。将在内布拉斯加州大学博物馆进行培训，公开展示将开发。沿海环境是当今人口最密集的环境之一，但先前对EPME的研究主要集中在海洋和大陆室内记录上。在调查沿着2000公里的海岸线累积到极地纬度的海岸线积累的沉积物时，该项目将提高对大陆边缘对快速环境变化的反应的理解。这项工作将有可能改变对phanerosoic最严重全球生态危机的时间范围，驾驶机制，全球变异性以及最终原因的理解。