德国地球科学研究中心Faccenna, Claudio团队研究了近同倾双俯冲驱动的日本东北部非碰撞造山运动。2025年6月5日出版的《自然—地球科学》杂志发表了这项成果。
同倾角双俯冲系统影响由两个俯冲带界定的区域内的板块运动学、几何形状和地幔流动。然而，这些影响是否延伸到附近的板块边缘构造仍然是一个悬而未决的问题。此外，在这些边缘运作并驱动非碰撞造山运动（即安第斯山脉的形成）的地球动力学过程的范围尚未完全清楚。
研究组使用三维地球动力学模型探索了日本东北部构造演化与琉球/伊豆-小笠原-马里亚纳群岛同倾双俯冲发展之间的潜在地球动力学联系。结果发现，这种同倾双俯冲将太平洋海沟向西拖动，导致向北传播的海沟推进和压缩影响了日本东北部的弧和弧后。因此，他们提出，过去约10-5Myr的琉球/伊豆-小笠原-马里亚纳群岛同倾双潜俯冲的动力学驱动了神秘的板块运动学，导致日本东北部自6-3.5Myr前以来的非碰撞造山运动和弧后俯冲开始，这使得该地区容易发生灾难性地震。研究组还认为，同倾角双俯冲解释了广泛的非碰撞造山作用的各种古代事件，并代表了俯冲带建立非碰撞造山所需的板块运动条件的机制。
附：英文原文
Title: Non-collisional orogeny in northeast Japan driven by nearby same-dip double subduction
Author: Gianni, Guido M., Guo, Zonglin, Holt, Adam F., Faccenna, Claudio
Issue&Volume: 2025-06-05
Abstract: Same-dip double subduction systems influence plate kinematics, geometry and mantle flow within the region bounded by the two subduction zones. However, whether these effects extend to nearby plate margin tectonics remains an open question. Furthermore, the range of geodynamic processes operating in these margins and driving non-collisional orogeny (that is, the formation of Andean-type mountain ranges) is not yet fully understood. Here we explore the potential geodynamic connection between the tectonic evolution of northeast Japan and the development of the Ryukyu/Izu–Bonin–Marianas same-dip double subduction using three-dimensional geodynamic models. We find that this same-dip double subduction drags the Pacific trench westwards, resulting in northward-propagating trench advance and compression affecting the northeastern Japan arc and back-arc. We thus propose that the dynamics of the Ryukyu/Izu–Bonin–Marianas same-dip double subduction over the past ~10–5 Myr drove the enigmatic plate kinematics responsible for non-collisional orogeny and back-arc subduction initiation in northeast Japan since ~6–3.5 Myr ago, which has made this region prone to catastrophic earthquakes. We also suggest that same-dip double subduction explains various ancient episodes of widespread non-collisional orogenesis and represents a mechanism through which subduction zones establish the plate kinematic conditions necessary for non-collisional orogenesis.
DOI: 10.1038/s41561-025-01704-5
Source: https://www.nature.com/articles/s41561-025-01704-5