Figure 3. Th/Ta vs. La/Yb diagram for basalts of oceanic plateaus, island arcs, and Archean
greenstone belts.
1 - Late Archean basalt of the Lumby Lake greenstone belt, southwestern Superior Province,
Canadian shield, after
[Tomlinson et al., 1999],
2 - basalts of the Aruba Plateau, 3 - Late Archean basalts of the Schreiber-Hemlo greenstone belt, southern
Superior Province, Canadian shield
[Kerrich et al., 1999].
Outlined are fields for basalts of the Ontong Java Plateau (OJP) and island
arc volcanics (ARCS)
[Condie, 1994, 1997b].
PM = primitive mantle, DM = depleted mantle.