Horizontally Forced Initiation of the Izu-bonin-mariana Subduction Zone
Document Type
Article
Publication Date
2024
Keywords
Geochemistry Geodynamics
Digital Object Identifier (DOI)
https://doi.org/10.1038/s43247-024-01263-4
Abstract
The sparsity of a direct record for the moment of subduction zone initiation has led to various models describing the infancy and evolution of modern oceanic subduction systems. Recently, with increases in available samples and geochemical data for subduction zone initiation-to-mature-arc lavas, better constraints on subduction evolution are possible. Here, by systemically modeling the time-space pattern and geochemical characters of forearc magmas with forward numerical modeling, we attempt to search for a best-fit geodynamic scenario where Izu-Bonin-Mariana-type subduction tends to develop. Our modeling and geochemical constraints have identified a necessary and possibly transitory pre-subduction zone initiation trenchward contraction consistent with observed Izu-Bonin-Mariana forearc magma geochemistry. Our results also reveal a typical maturation process for Izu-Bonin-Mariana-type oceanic subductions, controlled by the pace of the upper plate’s rifting and solidification.
Rights Information
This work is licensed under a Creative Commons Attribution 4.0 License.
Was this content written or created while at USF?
Yes
Citation / Publisher Attribution
Communications Earth & Environment, v. 5, art. 91
Scholar Commons Citation
Liu, Liang, "Horizontally Forced Initiation of the Izu-bonin-mariana Subduction Zone" (2024). School of Geosciences Faculty and Staff Publications. 2392.
https://digitalcommons.usf.edu/geo_facpub/2392
