Fig. 6: Interpreted tomographic section and reconstruction of the Mesozoic-Cenozoic subduction system in Western South America illustrating the proposed asthenospheric anomaly telescoping process beneath the Southern Atlantic-Southwest Indian ridges. | Nature Communications

Fig. 6: Interpreted tomographic section and reconstruction of the Mesozoic-Cenozoic subduction system in Western South America illustrating the proposed asthenospheric anomaly telescoping process beneath the Southern Atlantic-Southwest Indian ridges.

From: Ghost-arc geochemical anomaly at a spreading ridge caused by supersized flat subduction

Fig. 6

a–d Reconstruction and interpretation of a e, cross-section from the UU-P07 global seismic tomography model36 assuming an average whole-mantle slab sinking rate of 1.1 cm/yr37. Kinematics parameters for South Atlantic mid-ocean ridge and plate motion are from Müller et al.32. Neutrally to positively buoyant subduction-modified mantle anomalies in the inset sketch in a, are based on Richter et al.16. See cross-section location in Fig. 1. SA South American plate, AP Antarctic Peninsula, SPT South Patagonian terrane, NPMT North Patagonian terrane, AF African plate, and GI Georgia Islands slab.

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