Supplemental Material: Metastable olivine within oceanic lithosphere in the uppermost lower mantle beneath the eastern United States

Tables S1 and S2 (the SKS and SKKS splitting pairs in the anomalous zone of Figure 1 and the pairs outside the zone) and Figures S1–S6 (earthquake distribution; examples of discrepant SKS-SKKS splitting measurements; discrepancy and number distributions in epicentral distance and back azimuth; estimation of anisotropy depth; and a schematic diagram showing the determined anisotropy depth based on the width of the discrepant region).