Fig. 4: Schematic of the structure recovered at JFAST^{17, 18}.

Trace element stratigraphy of the JFAST core is shown on the left with sedimentary units colored and labeled as in Fig. 1¹⁷. Generalized stratigraphy is shown in the middle with mudstone, smectite-rich clay, and chert lithologies indicated in different shades of gray. Previously observed faults and damage^{17,18,19, 47} are indicated on the right side of the stratigraphic column. On the right, a zoomed-in schematic of the structure recovered at JFAST^{17, 18} is shown and faults with biomarker thermal anomalies are colored by the minimum slip magnitude capable of reproducing the observations within the allowable amount of total slip¹³. Dashed lines represent PP948, which was not modeled as well as samples PP944 and PP951 for which structural evidence is ambiguous.