Fig. 2: Selected whole-rock geochemical features for the Cretaceous igneous rocks from the Comei LIP (Kerguelen). | Communications Earth & Environment

Fig. 2: Selected whole-rock geochemical features for the Cretaceous igneous rocks from the Comei LIP (Kerguelen).

From: Recycled oceanic gabbro produced the depleted component in hotspot magma from the Comei large igneous province in the Kerguelen mantle plume

Fig. 2

a Chondrite-normalized REE patterns for Comei LIP mafic rocks, with OIB and N-MORB values for comparison. b Primitive mantle-normalized trace element patterns for Comei LIP mafic rocks, with OIB and N-MORB values for comparison. c Sc/Nb vs. Y/Nb ratios, sensitive to garnet and clinopyroxene, in Comei LIP igneous rocks. d εNd(t) versus Nb/U ratio for Comei LIP igneous rocks. The dark gray curved arrow in (d) illustrates the compositional trend of crustal assimilation by felsic rocks. Symbol meanings: dark green circles, N-MORB-like Cona gabbros; dark purple squares, OIB-like Cona diabases (this study); light green circles, N-MORB-like samples (literature); light purple squares, OIB-like samples (literature); light yellow triangles, transitional N-MORB- to OIB-like samples; light blue diamonds, OIB-like samples with lithospheric contamination; gray crosses, felsic rocks; dark blue star, N-MORB. Data sources: Chondrite and OIB, ref. 1; N-MORB, ref. 2; Whole-rock and zircon data for Comei igneous rocks, Supplementary Data 6 and 7119. Abbreviations: CMLIP Comei LIP, TS this study.

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