Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL095075 |
Coupling between lithosphere removal and mantle flow in the central Andes | |
Huilin Wang; Claire A. Currie; Peter G. DeCelles | |
2021-08-12 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | The central Andes is part of a Cordilleran orogen formed through continent-ocean convergence. In contrast to the thickened crust, the mantle lithosphere below much of the orogen is anomalously thin. Additionally, the surface is characterized by widespread backarc magmatism and transient ∼100-km-wide basins that developed over last 30 million years, with basins located systematically seaward of major backarc ignimbrite centers and basin formation predating the late Miocene magma/ignimbrite flare-up. Using numerical models, we propose a novel mechanism whereby lithosphere removal is coupled with mantle flow. First, a small area of high-density eclogitized lower crust initiates a gravitational instability, causing a localized basin at the surface that subsides and then uplifts. Foundering crust and adjacent lithosphere are entrained by subduction-induced mantle flow, driving regional lithosphere removal and magmatism. The models demonstrate that mantle flow can amplify a local lithosphere instability to orogen-wide lithosphere removal, rapidly eliminating accumulated mass in the orogen. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/335827 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Huilin Wang,Claire A. Currie,Peter G. DeCelles. Coupling between lithosphere removal and mantle flow in the central Andes[J]. Geophysical Research Letters,2021. |
APA | Huilin Wang,Claire A. Currie,&Peter G. DeCelles.(2021).Coupling between lithosphere removal and mantle flow in the central Andes.Geophysical Research Letters. |
MLA | Huilin Wang,et al."Coupling between lithosphere removal and mantle flow in the central Andes".Geophysical Research Letters (2021). |
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