Supplemental Material: Constraining the provenance of black shales using rare earth elements and neodymium isotopes, Midcontinent United States

Table S1: Locality information for each sample. Table S2: Detailed mineralogical compositions of each sample based on X-ray diffraction measurements. Table S3: Trace-element concentrations in each sample (in ppm). Table S4: Trace-element concentration uncertainty (1σ). Table S5: Calculated dissimilarity values of each sample relative to other samples. Lower values correspond with increasing similarity in rare earth element patterns.