Fig. 1: Trench-fill sediments and tectonics of South American subduction. | Nature Communications

Fig. 1: Trench-fill sediments and tectonics of South American subduction.

From: Southward expanding plate coupling due to variation in sediment subduction as a cause of Andean growth

Fig. 1: Trench-fill sediments and tectonics of South American subduction.The alt text for this image may have been generated using AI.

a Sediment thickness in oceans58 and the topography of the Andes. White thick arrows indicate plate velocities. Black thin arrows indicate trench velocities. b Reconstruction of the Juan Fernandez Ridge relative to South America22. Dashed lines represent the paleo-positions of JFR from 60 Ma to present with an interval of 10 Myrs. Thick semi-transparent lines represent ocean currents, with the cold Humboldt Current (or Peru Current) colored with blue and the rest with black. The green arrow indicates the transport direction of trench-fill sediments. c variation of the maximum Andean topography and the thickness of trench-fill sediments with latitude.

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