How Sediment Magnetism Captures the South Atlantic Anomaly

(a) Ocean Drilling Program (ODP) site 1233 (red circle) is located on the slope of the Chile Margin within (b) the modern South Atlantic Anomaly (SAA), which is the region of lowest geomagnetic field intensity at Earth’s surface. Further locations of sedimentary paleomagnetic records from the SAA are shown in red dots. Credit: Liu et al. [2026], Figure 1