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Rapid South Atlantic spreading changes and coeval vertical motion in surrounding continents: Evidence for temporal changes of pressure-driven upper mantle flow

Colli, Lorenzo; Stotz, Ingo; Bunge, Hans-Peter; Smethurst, Mark; Clark, Stuart; Iaffaldano, Giampiero; Tassara, Andres; Guillocheau, Francois; Bianchi, M.C.


The South Atlantic region displays (1) a topographic gradient across the basin, with Africa elevated relative to South America, (2) a bimodal spreading history with fast spreading rates in Late Cretaceous and Eo-Oligocene, and (3) episodic regional uplift events in the adjacent continents concentrated in Late Cretaceous and Oligocene. Here we show that these observations can be linked by dynamic processes within Earth's mantle, through temporal changes in asthenosphere flow beneath the region....[Show more]

CollectionsANU Research Publications
Date published: 2014
Type: Journal article
Source: Tectonics
DOI: 10.1002/2014TC003612


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