Fig. 5: Geochemistry in incompatible elements normalized by primitive mantle (spidergram) of various petit-spot lavas. | Communications Earth & Environment

Fig. 5: Geochemistry in incompatible elements normalized by primitive mantle (spidergram) of various petit-spot lavas.

From: The mantle structure below petit-spot volcanoes

Fig. 5

a–d NW Pacific Plate petit-spots, e western Pacific Plate petit-spots, and f Christmas Island petit-spot off Sunda Trench. The lavas on “oceanic carbonatite” show thin gray patterns76. The representative N-MORB and OIB compositions are broken and dotted lines, respectibely75. Gray hatched bars correspond the compositions of Th, U, Nb, Ta, Zr, and Hf. Although the negative anomalies in Th, U, Nb, and Ta are mainly shown in G1 and G2 lavas of the NW Pacific Plate petit-spot, those in Zr and Hf are for all petit-spots as mentioned in Fig. 4. The data and the color legends are available in Supplementary Data 1.

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