Neotectonic evolution of the island of Rhodes (Greece) during the Pleistocene: an integrated micropaleontological and structural geology approach (NERHO)

更新世期间罗得岛（希腊）的新构造演化：一种综合的微古生物学和构造地质学方法（NERHO）

• 批准号: 444848418
• 负责人: Dr. Yvonne Milker
• 金额: --
• 依托单位: Přírodovědecká fakulta
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/444848418?language=en
• 关键词: Neotectonic; evolution; island; Rhodes; Greece

The Island of Rhodes (eastern Mediterranean Sea) is situated at the collision zone between the African and Eurasian plates and contains microfossil-rich sedimentary archives, thus, provides the opportunity to reconstruct tectonically-induced past vertical motions of the island based on microfossil assemblages. We specifically propose to study the neotectonic evolution of the island during the Pleistocene and in recent times to better understand long-term and short-term tectonic events during ongoing plate convergence in the eastern Mediterranean region. To reach our aims, we plan to apply an interdisciplinary approach combining micropaleontological and structural geological methods and will further use a set of statistical and chronostratigraphic methods. A more comprehensive view on the regional neotectonic evolution of the island during the early to mid-Pleistocene is crucial since the different sedimentary depocenters along the east coast of Rhodes may have independently undergone vertical motions. Detailed quantitative paleo-water depth reconstructions in these depocenters, corrected for precession-driven changes in trophic conditions as well as glacio-eustatic effects, will allow us to accurately estimate rates of past local vertical motions. These estimates will be compared (1) to each other and (2) to neotectonic crustal deformation kinematics derived from remote sensing and field-based kinematic analyses of first-order structural discontinuities by using the present sea level as reference level. With our integrated approach we will bring new insights into the overall spatial and temporal neotectonic dynamics of Rhodes, and thus will provide relevant baseline data for the validation of regional subduction models and to better understand modern subduction processes in the Eastern Mediterranean Sea region.

罗兹岛（东地中海）位于非洲板块和欧亚板块之间的碰撞带，含有丰富的微体化石沉积档案，因此，提供了一个机会，以重建构造引起的过去垂直运动的岛屿的基础上微体化石组合。我们特别建议研究更新世期间和最近的岛屿的新构造演化，以更好地了解在地中海东部地区正在进行的板块收敛过程中的长期和短期构造事件。为了实现我们的目标，我们计划应用一个跨学科的方法相结合的微体古生物和构造地质方法，并将进一步使用一套统计和年代地层学方法。一个更全面的看法，区域新构造演化的岛屿在早中更新世是至关重要的，因为不同的沉积沉积物沉积中心沿着东海岸的罗兹可能独立地经历了垂直运动。详细的定量古水深重建在这些沉积中心，校正岁差驱动的营养条件的变化，以及冰川海平面的影响，将使我们能够准确地估计过去的本地垂直运动的速度。这些估计值将相互比较，并与通过遥感和以现场为基础的一级结构不连续面运动学分析得出的新构造地壳变形运动学进行比较。通过我们的综合方法，我们将为罗兹的整体时空新构造动力学带来新的见解，从而为验证区域俯冲模型提供相关的基线数据，并更好地了解东地中海地区的现代俯冲过程。