Precise Age Calibration of the Late Pennsylvanian - Early Permian Time Scale: Implications for Global Correlation and Rates of Processes in the Late Paleozoic Era

宾夕法尼亚晚期 - 早二叠世时间尺度的精确年龄校准：对晚古生代过程的全球相关性和速率的影响

• 批准号: 0106796
• 负责人: Clyde Northrup
• 金额: --
• 依托单位: Boise State University
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-07-15 至 2004-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0106796&HistoricalAwards=false
• 关键词: Precise; Age; Calibration; Late; Pennsylvanian

ABSTRACTPrecise Age Calibration of the Late Pennsylvanian-Early Permian Time Scale: Implications for Global Correlation and Rates of Processes in the Late Paleozoic EraClyde Northrup, V. Davydov, Walter SnyderEAR-0106796The geologic time scale is a fundamental tool in Earth Science research - correlation of events globally, determination of absolute ages, and the estimation of rates of process all depend on the accuracy and precision of the time scale. This project will calibrate the Late Pennsylvanian through early Permian interval of the time scale through a combination of U-Pb zircon geochronology, stratigraphy, and multitaxa paleontology. Work will focus on the marine sedimentary sections in the foreland of the southern Ural mountains in Russia-Kazakhstan, an area that offers a fantastic opportunity for time scale calibration because the late Paleozoic rocks have numerous, well-preserved fossils in addition to many interstratified volcanic ash horizons that are amenable to radiometric dating.

晚宾夕法尼亚-早二叠世时间尺度的精确年龄校准：晚古生代全球相关性和过程速率的含义Clyde Northrup，V. Davydov，Walter Snyderlaw-0106796地质时标是地球科学研究中的基本工具-全球事件的相关性，绝对年龄的确定，以及对过程速率的估计都依赖于时间尺度的准确性和精确性。该项目将通过U-Pb锆石地质年代学、地层学和多分类古生物学的结合，标定晚宾夕法尼亚世至早二叠世的时间尺度。 工作重点将放在俄罗斯-哈萨克斯坦乌拉尔山脉南部前陆的海洋沉积剖面上，该地区提供了一个极好的时间尺度校准机会，因为晚古生代岩石除了许多适合放射性测年的层间火山灰层外，还有许多保存完好的化石。