Vertical Magnetic Fabrics Reveal Lateral Transport and Internal Reorganization During Emplacement of a Mesoproterozoic Mafic Sill

This dataset accompanies the manuscript “Vertical Magnetic Fabrics Reveal Lateral Transport and Internal Reorganization During Emplacement of a Mesoproterozoic Mafic Sill.” It contains Supporting Information and analytical data from the ca. 1.32 Ga Wulongji mafic sill in the Yanliao large igneous province, North China. The study uses a continuous anisotropy of magnetic susceptibility (AMS) profile across approximately 30 m of sill thickness to investigate magma transport and internal reorganization during emplacement.

The Supporting Information contains detailed sampling and analytical methods, the AMS statistical workflow, and supplementary Figures S1–S12 with captions. These figures document petrographic observations, backscattered electron images, electron probe analyses, rock magnetic measurements, sampling coverage, segmentation stability, and relationships among AMS parameters. Supporting Data File 1 contains the complete AMS parameter table for 328 specimens, including mean magnetic susceptibility, anisotropy parameters, principal axis orientations, sampling coordinates, and assignments to the six statistical domains D1–D6.