CAREER: Oligocene planktonic foraminiferal Konservat-Lagerstaette: Implications for taxonomy, paleobiology, and tropical marine temperatures

职业：渐新世浮游有孔虫 Konservat-Lagerstaette：对分类学、古生物学和热带海洋温度的影响

• 批准号: 0847300
• 负责人: Bridget Wade
• 金额: $ 45.62万
• 依托单位: Texas A&M Research Foundation
• 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: 2009-09-01 至 2010-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0847300&HistoricalAwards=false
• 关键词: CAREER; Oligocene; planktonic; foraminiferal; Konservat

"This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)." CAREER: Oligocene microfossil Konservat-Lagerstätte: Implications for planktonic foraminiferal taxonomy, paleobiology, and marine temperaturesBridget WadeTexas A&M University EAR-0847300ABSTRACTThe Earth today has major ice caps on Antarctica and Greenland, but this was not always the case. This research focuses on climate change during a time period known as the Oligocene (34 to 24 million years ago). This interval of time began with a big shift in climate, when a large ice sheet developed on Antarctica. Once the Antarctic ice cap was established, it waxed and waned many times between periods with relatively little ice and periods with very expansive ice sheets. However, the impact of these large variations in Antarctic ice volume upon tropical sea surface temperatures and marine biota are largely unknown. Previous estimates of Oligocene sea surface temperatures from microfossil geochemistry indicate tropical and subtropical temperatures that were substantially lower than modern. But there is a problem in previous studies: microfossil shell geochemistry can be altered post deposition and bias temperature reconstructions. To address this problem, PI will examine microfossils from sites with exceptional preservation (Konservat-Lagerstätte). A detailed study of well preserved microfossils will build an accurate picture of how the Oligocene climate changed and will lead to a greater understanding of Oligocene climatic events and the impact on tropical biota.This research will be integrated with a number of K-12, undergraduate, and graduate activities that involve project-based discovery learning. In partnership with the Integrated Ocean Drilling Program at Texas A&M, PI will expand a successful pilot program for minority high school students, Summer pre-College Ocean Research Experience (SCORE), which emphasizes integrated research experiences in ocean sciences. A permanent exhibit on polar climates and the history of Antarctica will be designed and PI will create 3D podcasts of microfossils "micropods" for incorporation into teaching activities.

“该裁决是根据2009年《美国复苏与再投资法》（公法111-5）资助的。”职业：渐新世微化石Konservat-lagerstätte：对浮游有孔虫分类学，古生物学和海洋温度wadetexas A＆M University ear-0847300 abstractthert The Earth Thate Earth The Earth The Earth The Earth The Earth The Earth The Earth The Earth The Earth The Earth The Earth The Earth The Earth The Earth The Earth The Earth具有重大冰帽，但并非总是如此。研究的重点是在渐新世（34至2400万年前）的时期内的气候变化。时间间隔始于气候的巨大变化，当时大型冰盖在南极发展。一旦建立了南极冰盖，它在冰块和时期较少的冰块和非常广泛的冰盖的时期之间的蜡和衰减很多次。然而，这些较大的南极冰量变化对热带海面温度和海洋生物群的影响在很大程度上尚不清楚。先前对微化石地球化学的渐新世海面温度的估计，表明热带和亚热带温度大大低于现代温度。但是，以前的研究存在一个问题：微化石壳地球化学可以改变沉积后温度重建后。为了解决这个问题，PI将检查具有特殊保存（Konservat-Lagerstätte）站点的微化石。对保存完好的微化石的详细研究将为渐新世气候如何变化，并对渐新世杂交事件有更深入的了解，并对热带生物群的影响进行更深入的了解。这项研究将与许多K-12，本科生以及涉及基于项目的发现研究的研究生活动。与德克萨斯A＆M的综合海洋钻井计划合作，PI将扩大针对少数民族高中学生的成功试点计划，即夏季前海洋研究经验（Score），该计划强调了海洋科学的综合研究经验。关于极地攀登的永久展览，将设计南极的历史，PI将为公司创建3D播客“微地石”，用于公司从事教学活动。