Tephra connections between environmental change and human prehistory in Ethiopia

埃塞俄比亚环境变化与人类史前史之间的火山灰联系

• 批准号: 2887807
• 金额: --
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2887807
• 关键词: Tephra; connections; between; environmental; change

Pleistocene volcanism associated with the MER produced colossal pyroclastic deposits found widely as tephra layerswithin sedimentary archives such as lake sediments and fluvial terraces. Due to the prevalence of tephra inarchaeological sequences, their correlation and dating has become fundamental to the chronology of the hominin recordin Ethiopia (and in eastern Africa more generally). However, the record of past MER volcanism is far from complete andrecent work combining volcanic outcrop, archaeological, fluvial and lake sediment sequences, has shown that manycorrelations require testing with new samples and state-of-the-art analytical protocols. In addition, there is nowdemonstrated potential to use cryptotephra methods to fill critical gaps in the volcanological record and increase thedetection and correlation of tephra isochrons within sedimentary sequences.

与MER相关的更新世火山活动产生了巨大的火山碎屑沉积物，在湖泊沉积物和河流阶地等沉积档案中广泛发现了火山碎屑层。由于在考古序列中普遍存在瘟热，它们的相关性和定年已经成为埃塞俄比亚（以及更普遍的东非）人类记录年表的基础。然而，过去MER火山活动的记录远未完成，最近结合火山露头，考古，河流和湖泊沉积物序列的工作表明，许多相关性需要用新的样品和最先进的分析方案进行测试。此外，现在已经证明使用隐隐层方法填补火山学记录中的关键空白，并增加沉积序列中隐隐层等时线的检测和对比的潜力。