Articles | Volume 15, issue 9
https://doi.org/10.5194/se-15-1113-2024
https://doi.org/10.5194/se-15-1113-2024
Research article
 | 
12 Sep 2024
Research article |  | 12 Sep 2024

How a volcanic arc influences back-arc extension: insight from 2D numerical models

Duo Zhang and J. Huw Davies

Related authors

On the global geodynamic consequences of different phase boundary morphologies
Gwynfor T. Morgan, J. Huw Davies, Robert Myhill, and James Panton
Solid Earth, 16, 297–314, https://doi.org/10.5194/se-16-297-2025,https://doi.org/10.5194/se-16-297-2025, 2025
Short summary
Reconciling surface deflections from simulations of global mantle convection
Conor P. B. O'Malley, Gareth G. Roberts, James Panton, Fred D. Richards, J. Huw Davies, Victoria M. Fernandes, and Sia Ghelichkhan
Geosci. Model Dev., 17, 9023–9049, https://doi.org/10.5194/gmd-17-9023-2024,https://doi.org/10.5194/gmd-17-9023-2024, 2024
Short summary

Cited articles

Baitsch-Ghirardello, B., Gerya, T. V., and Burg, J.-P.: Geodynamic regimes of intra-oceanic subduction: Implications for arc extension vs. shortening processes, Gondwana Res., 25, 546–560, 2014. a, b, c
Balázs, A., Faccenna, C., Gerya, T., Ueda, K., and Funiciello, F.: The Dynamics of Forearc – Back-Arc Basin Subsidence: Numerical Models and Observations From Mediterranean Subduction Zones, Tectonics, 41, e2021TC007078, https://doi.org/10.1029/2021TC007078, 2022. a
Barckhausen, U., Engels, M., Franke, D., Ladage, S., and Pubellier, M.: Evolution of the South China Sea: Revised ages for breakup and seafloor spreading, Mar. Petrol. Geol., 58, 599–611, 2014. a
Capitanio, F. A., Morra, G., and Goes, S.: Dynamic models of downgoing plate-buoyancy driven subduction: Subduction motions and energy dissipation, Earth Planet. Sc. Lett., 262, 284–297, 2007. a
Capitanio, F. A., Stegman, D. R., Moresi, L.-N., and Sharples, W.: Upper plate controls on deep subduction, trench migrations and deformations at convergent margins, Tectonophysics, 483, 80–92, 2010. a, b
Download
Short summary
We numerically model the influence of an arc on back-arc extension. The arc is simulated by placing a hot region on the overriding plate. We investigate how plate ages and properties of the hot region affect back-arc extension and present regime diagrams illustrating the nature of back-arc extension for these models. We find that back-arc extension occurs not only in the hot region but also, surprisingly, away from it, and a hot region facilitates extension on the overriding plate.
Share