Paleoclimatic Evidence from Freshwater Wetlands in the East African Rift: a Pilot Project

东非裂谷淡水湿地的古气候证据：试点项目

• 批准号: 0207705
• 负责人: Gail Ashley
• 金额: $ 7.43万
• 依托单位: Rutgers University New Brunswick
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-08-01 至 2004-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0207705&HistoricalAwards=false
• 关键词: Paleoclimatic; Evidence; Freshwater; Wetlands; East

An interdisciplinary research project is proposed to test the hypothesis that groundwater-fed wetlands may be used as paleoclimatic indicators in equatorial East Africa. The study will integrate geochemical, biological and sedimentological data from a large modern freshwater wetland (Loboi Wetland, near Lake Bogoria, Kenya) and compare these data to nearby Pleistocene Loboi Silts and Kapthurin Formation that may contain ancient wetland sediments. The link to paleoclimate will be made by locating repetitive alternations (cycles?) of lithofacies that record wet-dry cycles within a datable ancient stratigraphic sequence. The two Pleistocene sites that we have selected show great promise. The field work, laboratory analyses and preliminary integration of the results from modern and ancient environments will be carried out over a one year period.

提出了一个跨学科的研究项目，以测试的假设，地下水喂养的湿地可能被用作古气候指标在赤道东非。该研究将整合来自一个大型现代淡水湿地（肯尼亚博戈里亚湖附近的Loboi湿地）的地球化学、生物学和沉积学数据，并将这些数据与附近可能含有古代湿地沉积物的更新世Loboi淤泥和Kapthurin地层进行比较。与古气候的联系将通过定位重复的交替（周期？）在可确定年代的古地层序列中记录干湿循环的岩相。我们选择的两个更新世遗址显示出巨大的潜力。实地工作、实验室分析和现代和古代环境结果的初步整合将在一年内进行。