COLLABORATIVE RESEARCH: Testing the Rates and Patterns of the End-Permian Mass Extinction and Early Triassic Radiation of Vertebrates in the Karoo Basin, South Africa

合作研究：测试南非卡鲁盆地二叠纪末大规模灭绝和三叠纪早期脊椎动物辐射的速率和模式

• 批准号: 9903375
• 负责人: Joseph Kirschvink
• 金额: $ 4万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-08-15 至 2002-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9903375&HistoricalAwards=false
• 关键词: COLLABORATIVE; RESEARCH; Testing; Rates; Patterns

9903375KirschvinkThe mass extinction at the end of the 250 million-year-old Permian Period was the most consequential in Earth history, causing an estimated 80-90% of all species then living on Earth to die out. To date, no accepted mechanism has been discovered. This research will explore the tempo and pattern of extinction among land life at the end of the Permian by collecting large numbers of vertebrate fossils from the Karoo Basin of South Africa, and tying their occurrence to measured stratigraphic sections. The time frame of their disappearance will be calibrated using magnetostratigraphy. The resulting data should show whether the extinction was rapid or slow in non-marine environments, and thus provide clues to causation. It should also show whether the extinctions on land were synchronous with those in the sea.

9903375Kirschvink 2.5 亿年前的二叠纪末期发生的大规模灭绝是地球历史上影响最严重的一次，估计导致地球上 80-90% 的物种灭绝。 迄今为止，尚未发现公认的机制。 这项研究将通过从南非卡鲁盆地收集大量脊椎动物化石，并将其发生与测量的地层剖面联系起来，探索二叠纪末陆地生物灭绝的速度和模式。 它们消失的时间范围将使用磁地层学来校准。 由此产生的数据应该显示非海洋环境中灭绝是快速还是缓慢，从而提供因果关系的线索。 它还应该表明陆地上的灭绝是否与海洋中的灭绝同步。