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Authors: Riel, Nicolas
Duarte, João C.
Almeida, Jaime
Kaus, Boris J. P.
Rosas, Filipe
Rojas-Agramonte, Yamirka
Popov, Anton
Title: Subduction initiation triggered the Caribbean large igneous province
Online publication date: 15-Jun-2023
Year of first publication: 2023
Language: english
Abstract: Subduction provides the primary driving force for plate tectonics. However, the mechanisms leading to the formation of new subduction zones remain debated. An example is the Lesser Antilles Arc in the Atlantic. Previous initiation mechanisms have implied the transmission of subduction from the Pacific Ocean or the impact of a plume head. Here, we use geodynamic models to simulate the evolution of the Caribbean region during the Cretaceous, where the eastern Pacific subduction triggered the formation of a new subduction zone in the Atlantic. The simulations show how the collision of the old Caribbean plateau with the Central America margin lead to the formation of a new Atlantic subduction zone by polarity reversal. The results further show how subduction renewal on the back of the old Caribbean plateau (present-day Central America) resulted in a major mantle flow reorganization that generated a subduction-induced plume consistent with the formation of the Caribbean Large Igneous Province.
DDC: 550 Geowissenschaften
550 Earth sciences
Institution: Johannes Gutenberg-Universität Mainz
Department: FB 09 Chemie, Pharmazie u. Geowissensch.
Place: Mainz
Version: Published version
Publication type: Zeitschriftenaufsatz
Document type specification: Scientific article
License: CC BY
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Journal: Nature Communications
Pages or article number: 786
Publisher: Springer Nature
Publisher place: London
Issue date: 2023
ISSN: 2041-1723
Publisher DOI: 10.1038/s41467-023-36419-x
Appears in collections:DFG-491381577-G

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