GRGC: Post-Illinoian Vegetational & Climatic History of the Middle West: Comparisons with the European History

GRGC：后伊利诺伊植被

• 批准号: 9316628
• 负责人: Herbert Wright
• 金额: $ 16万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-05-15 至 1997-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9316628&HistoricalAwards=false
• 关键词: GRGC; Post; Illinoian; Vegetational; &amp

EAR-9316628 Wright, Herbert, Ito, Emi, Univ. of Minnesota GRGC: Post-Illinoian vegetational and climatic history of the Middle West: Comparisons with European history PIs, in collaboration with the Illinois Geological Survey, will conduct pollen analysis covering the time from the penultimate glaciation through the latest interglacial, up to the present (the last 130,000 years), south of the extent of the last glacier in central North America. A transect of cores will be taken across a drained lake basin in southern Illinois. Analyses will be conducted of pollen (in detail), as well as of ostracodes and plant macrofossils; C-14 dating, lithologic, and other geochemical analyses will also be done. Results will be correlated with similar European studies and with the marine sediment-core record of ice sheet volume. Striking variations in vegetation suggest conspicuous climate changes during these times and have implications for understanding, for example, the history of jet stream migration, precipitation, and tree migration rates as indicators of insolation and climate.

粤ICP备16036628号-1 Wright，赫伯特，伊藤，惠美，明尼苏达大学 中西部的后伊利诺伊植被和气候历史：与欧洲历史的比较 研究所将与伊利诺斯州地质调查局合作，进行花粉分析，分析范围从倒数第二次冰期到最近的间冰期，一直到现在（过去13万年），在北美洲中部最后一次冰川以南。 将在伊利诺斯州南部的一个排水湖盆中采集一条样带。 将对花粉（详细）、介形虫和植物宏体化石进行分析;还将进行C-14测年、岩性和其他地球化学分析。 结果将与类似的欧洲研究和冰盖体积的海洋沉积物芯记录相关联。 植被的显著变化表明在这些时期明显的气候变化，并对理解有影响，例如，急流迁移的历史，降水和树木迁移率作为日照和气候的指标。