Journal article
Rapid subduction initiation and magmatism in the Western Pacific driven by internal vertical forces
Nature communications, Vol.11(1), pp.1874-1874
04/20/2020
DOI: 10.1038/s41467-020-15737-4
PMCID: PMC7170853
PMID: 32312969
Abstract
Plate tectonics requires the formation of plate boundaries. Particularly important is the enigmatic initiation of subduction: the sliding of one plate below the other, and the primary driver of plate tectonics. A continuous, in situ record of subduction initiation was recovered by the International Ocean Discovery Program Expedition 352, which drilled a segment of the fore-arc of the Izu-Bonin-Mariana subduction system, revealing a distinct magmatic progression with a rapid timescale (approximately 1 million years). Here, using numerical models, we demonstrate that these observations cannot be produced by previously proposed horizontal external forcing. Instead a geodynamic evolution that is dominated by internal, vertical forces produces both the temporal and spatial distribution of magmatic products, and progresses to self-sustained subduction. Such a primarily internally driven initiation event is necessarily whole-plate scale and the rock sequence generated (also found along the Tethyan margin) may be considered as a smoking gun for this type of event.
Details
- Title: Subtitle
- Rapid subduction initiation and magmatism in the Western Pacific driven by internal vertical forces
- Creators
- B Maunder - Imperial College LondonJ Prytulak - Durham UniversityS Goes - Imperial College LondonM Reagan - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Nature communications, Vol.11(1), pp.1874-1874
- DOI
- 10.1038/s41467-020-15737-4
- PMID
- 32312969
- PMCID
- PMC7170853
- NLM abbreviation
- Nat Commun
- ISSN
- 2041-1723
- eISSN
- 2041-1723
- Language
- English
- Date published
- 04/20/2020
- Academic Unit
- Earth and Environmental Sciences
- Record Identifier
- 9984229293902771
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