TephroBridge: Establishing a TEPHROstratigraphy for the Eastern Anatolian Volcanic Provenance to BRIDGE the gap in the knowledge in eastern Mediterranean chronology

TephroBridge：建立东安纳托利亚火山起源的 TEPHRO 地层学，以弥合东地中海年代学知识的差距

• 批准号: 537530728
• 负责人: Professor Dr. Achim Brauer
• 金额: --
• 依托单位: Sektion 4.3: Klimadynamik und Landschaftsentwicklung
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/537530728?language=en
• 关键词: TephroBridge; Establishing; TEPHROstratigraphy; Eastern; Anatolian

The eastern Mediterranean is highly sensitive to abrupt climatic changes due to its location at the confluence of distinct atmospheric circulations. Past environmental records offer insights into the climatic drivers and environmental responses. However, chronological uncertainties present challenges in fully understanding potential regional climatic (a)synchronies. The method of using tephra (volcanic ash), both visible and non-visible (cryptotephra), can be a powerful chronological tool to overcome these problems. By geochemically characterising volcanic sources and their eruptions, tephra correlations can offer precise dating and synchronous time markers (isochrones), enabling the linking and dating of records across regions. The proposed research of TephroBridge aims to establish a detailed tephrostratigraphy for one such important volcanic centre, the Eastern Anatolian Volcanic Province (EAVP). The volcanoes of Nemrut and Süphan are significant sources of tephra in the region, found in numerous palaeoclimatic and archaeological records, but a comprehensive tephrostratigraphy is still lacking. The study plans to geochemically characterise the tephra layers from Lake Van's Ahlat Ridge core (5034-2) using techniques like electron probe micro-analysis (EPMA) and LA-ICP-MS. Petrographic identification, morphological descriptions, and thin section analysis will further characterise the tephra layers. The research aims to correlate these newly geochemically analysed tephra layers, the major, minor, and trace element compositions, with cryptotephra layers found in the Dead Sea record and other important palaeoclimatic and archaeological records in the region. The study's future success is demonstrated so far by the TephroMed project, which correlated cryptotephra layers from the Dead Sea to Lake Van's tephra layers, refining the Levant's chronology and providing insights into past climatic variability. Overall, this research project will establish a comprehensive tephrostratigraphic framework for the EAVP. This will enable improved synchronisation of regional records using tephra layers to enhance insights into past climatic responses in the eastern Mediterranean, bridging the gap in knowledge of the current Mediterranean chronology.

东地中海对突然的气候变化高度敏感，因为它位于不同大气环流的汇合处。过去的环境记录提供了有关气候驱动因素和环境反应的见解。然而，按年代不确定性充分理解潜在的区域气候（a）同步方面面临挑战。使用Tephra（火山灰）的方法可见和不可见的（Cryptotephra）可以是克服这些问题的强大时间表工具。通过地球化学来表征火山源及其喷发，Tephra相关性可以提供精确的约会和同步时间标记（等速器），从而使各个地区的记录链接和约会。提议的Tephrobridge的研究旨在为一个重要的火山中心，即东安纳托利亚火山省（EAVP）建立一个详细的tephrostratatratigraphy。 Nemrut和Süphan的火山是该地区Tephra的重要来源，在许多古气候和考古记录中发现，但仍缺乏全面的Tephrospraphypaphy。该研究计划使用电子探针微型分析（EPMA）和LA-ICP-MS等技术从地球化学表征来自范范湖Ahlat Ridge Core（5034-2）的Tephra层。岩石学识别，形态描述和薄截面分析将进一步表征Tephra层。该研究旨在将这些新的地球化学分析层（主要，次要和微量元素组成）与死海记录中发现的Cryptotephra层以及该地区其他重要的古气候和档案记录相关联。 Tephromed项目迄今已证明了这项研究的未来成功，该项目将从死海到Van湖的Tephra层的Cryptotephra层相关联，完善了Levant的年表，并提供了对过去杂交变异性的见解。总体而言，该研究项目将为EAVP建立一个全面的Tephrospraphicraphic框架。这将实现使用Tephra层改善区域记录的同步，以增强对东地中海东部杂交反应的见解，从而弥合了当前地中海年表的知识的差距。