Scholarlink

<p>The spatiotemporal interplay of long-lasting post-orogenic deformations make continental collision zones among Earth’s most enigmatic systems. Here, we employ three-dimensional thermomechanical modeling to decode mantle dynamics of the Arabian-Eurasian collision—an archetype of post-subduction tectonics. Our key findings reveal that plumelet-plate interactions drive deformation both within and at the margins of convergent plates, forming modern kinematics, surface tectonics, and plate boundary configurations. We document previously unrecognized segmentation of the subducted Neotethyan slabs (Bitlis and Zagros) accompanied by upper-plate tearing, which fundamentally modifies the seismotectonic stress accumulation along the Arabian-Turkish-Iranian boundary. The convective support from the plumelet beneath the former Tethyan magmatic arc drives drip-like lithospheric removal under the southern Georgian highland, providing a regional-scale example of arc-to-intraplate deformation transformation. Our results offer a&#xa0;unified framework for understanding how upper mantle processes control surface deformation in post-subduction systems dominated by plumelet dynamics.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Anatomy of a post-subduction collision

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年3月26日

查看全文
  • Ebru Şengül Uluocak,
  • Russell N. Pysklywec,
  • Claudio Faccenna,
  • Taylor Schildgen

摘要

The spatiotemporal interplay of long-lasting post-orogenic deformations make continental collision zones among Earth’s most enigmatic systems. Here, we employ three-dimensional thermomechanical modeling to decode mantle dynamics of the Arabian-Eurasian collision—an archetype of post-subduction tectonics. Our key findings reveal that plumelet-plate interactions drive deformation both within and at the margins of convergent plates, forming modern kinematics, surface tectonics, and plate boundary configurations. We document previously unrecognized segmentation of the subducted Neotethyan slabs (Bitlis and Zagros) accompanied by upper-plate tearing, which fundamentally modifies the seismotectonic stress accumulation along the Arabian-Turkish-Iranian boundary. The convective support from the plumelet beneath the former Tethyan magmatic arc drives drip-like lithospheric removal under the southern Georgian highland, providing a regional-scale example of arc-to-intraplate deformation transformation. Our results offer a unified framework for understanding how upper mantle processes control surface deformation in post-subduction systems dominated by plumelet dynamics.