Fig. 1: Spatiotemporal distribution of ophiolites.
a 143Nd/144Nd vs. Δ8/6.5 scatter plot from deep mantle plume-derived basalts from reference12. Kernel density contours for Pacific Mantle Domain basalts are overlaid on top of scatter points of African mantle domain samples. b Present-day spatial distribution of ophiolites of the African mantle domain from which samples were used and colour-coded for age; also shown are sample locations of normal-oceanic crust basalts and plume-derived basalts from the African and Pacific domains. See methods for data sources. c Temporal distribution of ophiolites of the African mantle domain, all assigned to respective past oceanic basins from which the ophiolites were derived (see Supplementary Fig. 1). The bar chart at the bottom shows the number of Nd isotopic samples per 10 million year bin.
