期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 112, 期 5, 页码 1287-1291出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1415473112
关键词
subduction zones; slab detachment; plate tectonics; continent rebound
资金
- National Science Foundation [EAR-1344538]
- Directorate For Geosciences
- Division Of Earth Sciences [1344538] Funding Source: National Science Foundation
- Division Of Earth Sciences
- Directorate For Geosciences [1135382] Funding Source: National Science Foundation
A simple model for necking and detachment of subducting slabs is developed to include the coupling between grain-sensitive rheology and grain-size evolution with damage. Necking is triggered by thickened buoyant crust entrained into a subduction zone, in which case grain damage accelerates necking and allows for relatively rapid slab detachment, i.e., within 1 My, depending on the size of the crustal plug. Thick continental crustal plugs can cause rapid necking while smaller plugs characteristic of ocean plateaux cause slower necking; oceanic lithosphere with normal or slightly thickened crust subducts without necking. The model potentially explains how large plateaux or continental crust drawn into subduction zones can cause slab loss and rapid changes in plate motion and/or induce abrupt continental rebound.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据