Establishment of high-resolution tephrostratigraphic correlations between marine (ODP Sites 964, 967 and 969) and terrestrial (Tenaghi Philippon) climate records in the Eastern Mediterranean region: towards determining leads and lags in abrupt climate cha

建立东地中海地区海洋（ODP 站点 964、967 和 969）和陆地（Tenaghi Philippon）气候记录之间的高分辨率地层相关性：确定突变气候变化中的超前和滞后

• 批准号: 286415454
• 负责人: Dr. Andreas Koutsodendris
• 金额: --
• 依托单位: Institut für Geowissenschaften
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/286415454?language=en
• 关键词: Establishment; resolution; tephrostratigraphic; correlations; between

The project aims to establish the first distal tephra correlations in the Eastern Mediterranean region for Marine Isotope Stages (MIS) 12 and 11. This approach will provide robust chronologies and allow direct land-sea correlations, which are a prerequisite for determining leads and lags between marine and terrestrial components of the climate system. The project goals will be achieved via high-resolution analyses of macro- and notably cryptotephras from three ODP sites (Site 964 – Ionian Sea; Sites 969 and 967 – Levantine Sea) and one terrestrial record (Tenaghi Philippon, Greece). Specifically, the project will (i) unravel the spatiotemporal distribution of macro- and cryptotephras during MIS 12–11 in the Eastern Mediterranean region; (ii) establish direct land-sea correlations in the Eastern Mediterranean region, with a particular focus on critical time intervals within MIS 12 and 11. The selected records are particularly well suited for addressing the objectives of the proposed project because they (i) are continuous and span MIS 12–11 completely; (ii) are located downwind with regard to the major Eastern Mediterranean volcanic sources; (iii) preserve numerous tephra layers as shown by previous studies and the applicants’ work during the first two project years; and (iv) record pronounced signals of past abrupt climate change. In the here requested third project year, the project goal will be tackled through two work packages: WP1 will verify the positions of cryptotephras in the ODP Leg 160 cores using light microscopy, and determine their geochemical signature using electron and ion microprobe techniques; this will allow to identify the volcanic sources as well as a comparison with the detected cryptotephras at Tenaghi Philippon during the first phase of the project. WP1 will ultimately lead to the establishment of precise distal tephra correlations in the Eastern Mediterranean. WP2 will focus on the 40Ar/39Ar dating of tephras, the establishment of the first land-sea correlations in the Eastern Mediterranean region for MIS 12–11, and the assessment of leads and lags between marine and terrestrial components of the climate system. The outcome of the project will be a high-resolution tephrostratigraphy for the Eastern Mediterranean region during the most extreme glacial (MIS 12) and interglacial (MIS 11) of the Middle Pleistocene. Through the establishment of precise land-sea correlations between marine and terrestrial records, the project will contribute to a better understanding of the spatiotemporal pattern of short-term climate and environmental variability in the Eastern Mediterranean region.

该项目旨在建立东地中海地区海洋同位素阶段（MIS）12和11的第一个远端火山灰相关性。这种方法将提供可靠的年表，并允许直接的陆地-海洋相关性，这是确定气候系统海洋和陆地组成部分之间的超前和滞后的先决条件。该项目的目标将通过对三个ODP站点（站点964 -爱奥尼亚海;站点969和967 -黎凡特海）和一个陆地记录（Tenaghi Philippon，希腊）的宏观，特别是隐晶岩进行高分辨率分析来实现。具体而言，该项目将（一）解开宏观和cryptotephras的时空分布期间MIS 12-11在东地中海地区;（二）建立直接的陆地-海洋相关性在东地中海地区，特别关注关键的时间间隔MIS 12和11。选定的记录特别适合于实现拟议项目的目标，因为它们（一）是连续的，完全跨越MIS 12-11;（二）位于东地中海主要火山源的下风处;（三）保存了许多火山灰层，如以前的研究和申请人在项目头两年的工作所示;以及（iv）记录过去气候突变的明显信号。在此处请求的第三个项目年，将通过两个工作包实现项目目标：工作方案1将利用光学显微镜技术核查ODP第160航次岩芯中隐晶岩的位置，并利用电子和离子微探针技术确定其地球化学特征;这将有助于确定火山源，并与第一阶段在Tenaghi Philippon检测到的cryptotephras进行比较。项目WP 1最终将导致建立精确的远火山灰相关性在东地中海。WP 2将侧重于火山岩的40 Ar/39 Ar定年，建立东地中海地区第一个MIS 12-11的陆地-海洋相关性，以及评估气候系统海洋和陆地组成部分之间的超前和滞后。该项目的成果将是中更新世最极端冰期（MIS 12）和间冰期（MIS 11）期间东地中海区域的高分辨率火山灰地层学。通过在海洋和陆地记录之间建立精确的陆地-海洋相关性，该项目将有助于更好地了解东地中海区域短期气候和环境变异的时空模式。

项目成果

Advancing Santorini’s tephrostratigraphy: New glass geochemical data and improved marine-terrestrial tephra correlations for the past ∼360 kyrs

推进圣托里尼岛的火山地层学：新的玻璃地球化学数据和改进的过去 360 kyrs 的海洋-陆地火山灰相关性

• DOI: 10.1016/j.earscirev.2019.102964
• 发表时间: 2020
• 期刊: Earth-Science Reviews
• 影响因子: 12.1
• 作者: Keller;Gertisser;Appelt;Vakhrameeva;Koutsodendris;Hardiman;Schulz
• 通讯作者: Schulz

Land-sea correlations in the Eastern Mediterranean region over the past c. 800 kyr based on macro- and cryptotephras from ODP Site 964 (Ionian Basin)

• DOI: 10.1016/j.quascirev.2021.106811
• 发表时间: 2021-03
• 期刊: Quaternary Science Reviews
• 影响因子: 4
• 作者: P. Vakhrameeva;A. Koutsodendris;S. Wulf;M. Portnyagin;Oona Appelt;T. Ludwig;M. Trieloff;J. Pross

The cryptotephra record of the Marine Isotope Stage 12 to 10 interval (460–335 ka) at Tenaghi Philippon, Greece: Exploring chronological markers for the Middle Pleistocene of the Mediterranean region

• DOI: 10.1016/j.quascirev.2018.09.019
• 发表时间: 2018-11
• 期刊: Quaternary Science Reviews
• 影响因子: 4
• 作者: P. Vakhrameeva;A. Koutsodendris;S. Wulf;W. Fletcher;Oona Appelt;M. Knipping;R. Gertisser;M. Trieloff;J. Pross

Eastern Mediterranean volcanism during marine isotope stages 9 to 7e (335–235 ka): Insights based on cryptotephra layers at Tenaghi Philippon, Greece

海洋同位素阶段 9 至 7e (335â235â´ka) 期间的东地中海火山活动：基于希腊 Tenaghi Philippon 的隐石层的见解

• DOI: 10.1016/j.jvolgeores.2019.05.016
• 发表时间: 2019
• 期刊: Journal of Volcanology and Geothermal Research
• 影响因子: 2.9
• 作者: Vakhrameeva;Koutsodendris;Tjallingii;Fletcher;Appelt;Ludwig;Knipping;Trieloff
• 通讯作者: Trieloff