Collaborative Research: Terrestrial Paleoenvironmental Record Through the Permian-Triassic Transition of Texas and New Mexico

合作研究：德克萨斯州和新墨西哥州二叠纪-三叠纪过渡期间的陆地古环境记录

• 批准号: 0844098
• 负责人: Paul Renne
• 金额: $ 27.14万
• 依托单位: Berkeley Geochronology Center
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2013-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0844098&HistoricalAwards=false
• 关键词: Collaborative; Research; Terrestrial; Paleoenvironmental; Record

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). This project involves a collaboration between scientists at the Berkeley Geochronology Center, University of California, University of New Mexico, New Mexico State University, and Southern Methodist University. The project?s overarching goal is to determine environmental conditions in terrestrial environments preserved in sedimentary strata of northwestern Texas and southeastern New Mexico, over a brief time interval including the transition between the Paleozoic and Mesozoic Eras, when the greatest mass extinctions known in Earth?s history occurred. A detailed program of paleomagnetism integrated with geochronology (using the 40Ar/39Ar and U/Pb methods) are used to provide a high resolution, regional chronostratigraphic framework. Supported by the chronostratigraphy, a regional model of depositional conditions and environments for the Quartermaster Formation will be developed. Analysis of fossil pollen, where present, will elucidate ecological conditions (and changes) across the time interval spanning the extinction horizon. Isotopes of oxygen and carbon are used to quantify atmospheric carbon dioxide concentrations and surface air temperatures. The results will help clarify the environmental tolerances of the Earth system, and aid understanding of the causes of the most profound biotic catastrophe known in our planet?s history. As participants in field and laboratory components of the research, undergraduate and graduate students at the participating institutions will receive hands-on training in the diverse scientific disciplines employed in the project.

该奖项是根据2009年《美国复苏和再投资法案》(公法111-5)提供资金的。该项目涉及伯克利地质年代学中心、加州大学、新墨西哥大学、新墨西哥州立大学和南方卫理公会大学的科学家之间的合作。S项目的总体目标是确定保存在德克萨斯州西北部和新墨西哥州东南部沉积地层中的陆地环境的环境条件，时间跨度很短，包括古生代和中生代之间的过渡时期，也就是地球历史上已知的最大规模的物种灭绝发生的时期？S。利用详细的古地磁学与地质年代学相结合的程序(使用40Ar/39Ar和U/Pb方法)来提供高分辨率的区域年代地层格架。在年代地层学的支持下，将建立军需统组的沉积条件和环境的区域模型。对化石花粉的分析，如果存在，将阐明跨越灭绝地平线的时间间隔的生态条件(和变化)。氧和碳的同位素被用来量化大气中的二氧化碳浓度和地表气温。这一结果将有助于阐明地球系统对环境的容忍度，并有助于理解地球历史上已知的最深刻的生物灾难-S的原因。作为研究的实地和实验室部分的参与者，参与机构的本科生和研究生将接受项目所采用的各种科学学科的实践培训。