COLLABORATIVE RESEARCH: Central Anatolian Tectonics (CD-CAT): Surface to mantle dynamics during collision to escape

该项目包括一个综合方案，研究在安纳托利亚中部的构造逃逸过程。这是在20世纪70年代首次认识到这一过程的位置，PI提出了一个强有力的理由，即这是在大陆-大陆碰撞背景下研究这一过程的时空特征的好地方。该研究建立在土耳其其他地区（计划研究区的东部和西部）许多PI以前进行的地球物理和地质研究的基础上。这项研究将通过地球物理学和地质学的结合来研究现代结构。过去的历史将通过对海拔、排水和火山作用的研究来重建。对安纳托利亚中部断层的研究非常重要，因为这是一个在安纳托利亚构造学中知之甚少的主要特征。具体来说，PI将解决以下问题：从地幔到地球的板块动力学是什么？的地表、大型走滑断层中由分布应变向局部应变的转变、岩浆活动的起源和后果以及逃逸构造发展过程中地形地貌的演化等。边界条件（阿拉伯板块向东碰撞，爱琴海向西延伸，非洲板块向南俯冲）对构造逃逸的驱动力有什么影响？这项研究将综合被动地震实验的结果;大地电磁剖面;地表地质和折返造山地壳的地貌、结构和地层沉积学分析;岩浆、变质和断层带岩石和地貌特征的温度-时间历史的地质/热年代测定;岩浆岩的同位素指纹和年代测定;二维和三维数值模拟。

This project involves an integrated program to study the process of tectonic escape in Central Anatolia. This is the location where this process was first recognized in the 1970s and the PIs make a strong case that this is good place to investigate the temporal and spatial characteristics of this process in the context of a continent-continent collision. The research builds on previous geophysical and geological studies by many of the PIs in other parts of Turkey (both to the east and west of the planned study area). The research will investigate modern structure through a combination of geophysics and geology. Past history will be reconstructed through studies of elevation, drainage and volcanism. Studies of the Central Anatolian fault are important as this is a major feature that is poorly understood in Anatolian tectonics.Specifically, the PIs will address the questions:? What are the plate dynamics from the mantle to the Earth?s surface, the transition from distributed to localized strain in large strike-slip faults, the origin and consequences of magmatism, and the evolution of relief and landscape during development of escape tectonics?? What are the effects of boundary conditions (collision of Arabian plate to the east, extension of Aegean to the west, subduction of African plate to the south) on the driving forces of tectonic escape?The study will integrate results of passive seismic experiments; magnetotelluric profiling; geomorphic, structural, and stratigraphic-sedimentological analysis of surface geology and exhumed orogenic crust; geo/thermochronometric determination of temperature-time histories of magmatic, metamorphic, and fault zone rocks and geomorphic features; isotopic fingerprinting and dating of magmatic rocks; and 2D and 3D numerical modeling.