Gravity field reconstruction for Chron 27y. Magnetic anomaly identifications are circles on African plate, triangles on Antarctic plate, squares on South American plate, and crosses on Malvinas plate. Black line is Chron 27y, dashed white lines is Chron 32y, white line is Chron 33o, black/white chain line is Chron 34y, and stippled region is seafloor that has been subducted beneath the Scotia plate.

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