## 4 Results
### Geochemistry of the Ildeus Intrusion
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline
**Sample** & **IL-5** & **018H** & **028F** & **044H** & **051S** & **063F** & **013B** & **058F** & **060F** \\ \hline
**Rock Type** & **Web** & **Web** & **Web** & **Web** & **Web** & **Web** & **Pyr** & **Pyr** & **Pyr** \\ \hline Rb & 0.88 & 0.69 & 2.41 & 0.93 & 1.67 & 1.54 & 31.47 & 1.11 & 1.17 \\ Ba & 66.81 & 83.42 & 116.62 & 79.23 & 59.40 & 18.89 & 1521.9 & 74.22 & 93.46 \\ Sr & 150.26 & 135.89 & 189.67 & 99.79 & 174.49 & 27.49 & 311.42 & 520.51 & 625.65 \\ Zr & 14.39 & 9.41 & 5.85 & 6.60 & 7.40 & 6.87 & 13.88 & 3.55 & 3.65 \\ Y & 5.77 & 6.14 & 4.35 & 3.60 & 3.36 & 10.65 & 16.73 & 6.98 & 3.38 \\ Nb & 0.47 & 0.22 & 0.33 & 0.13 & 0.58 & 0.093 & 1.91 & 0.36 & 0.37 \\ Ta & 0.09 & 0.73 & 0.21 & 0.097 & 0.40 & 0.11 & 0.57 & 0.48 & 0.41 \\ Hf & 0.41 & 0.34 & 0.25 & 0.24 & 0.25 & 0.41 & 0.73 & 0.27 & 0.21 \\ Th & 0.25 & 0.085 & 0.24 & 0.059 & 0.22 & 0.13 & 3.37 & 0.19 & 0.11 \\ U & 1.82 & 0.006 & \textless{}0.001 & \textless{}0.001 & 0.01 & 0.041 & 0.71 & 0.047 & 0.064 \\ La & 1.77 & 1.12 & 1.64 & 0.73 & 1.14 & 1.21 & 36.09 & 1.45 & 1.28 \\ Ce & 4.39 & 2.91 & 3.69 & 1.92 & 2.57 & 4.18 & 75.60 & 3.88 & 2.97 \\ Pr & 0.59 & 0.13 & 0.50 & 0.26 & 0.34 & 0.73 & 8.94 & 0.51 & 0.38 \\ Nd & 2.76 & 2.10 & 2.20 & 1.32 & 1.53 & 4.13 & 33.07 & 2.77 & 1.87 \\ Sm & 0.75 & 0.68 & 0.57 & 0.39 & 0.41 & 1.41 & 5.53 & 0.92 & 0.49 \\ Eu & 0.28 & 0.30 & 0.27 & 0.18 & 0.19 & 0.49 & 1.80 & 0.49 & 0.38 \\ Gd & 1.01 & 0.98 & 0.75 & 0.57 & 0.57 & 2.00 & 6.02 & 1.32 & 0.67 \\ Tb & 0.16 & 0.17 & 0.13 & 0.11 & 0.10 & 0.35 & 0.72 & 0.23 & 0.11 \\ Dy & 1.02 & 1.07 & 0.78 & 0.66 & 0.62 & 2.10 & 3.34 & 1.40 & 0.67 \\ Ho & 0.22 & 0.24 & 0.18 & 0.15 & 0.14 & 0.46 & 0.64 & 0.31 & 0.15 \\ Er & 0.67 & 0.68 & 0.53 & 0.45 & 0.42 & 1.24 & 1.74 & 0.84 & 0.41 \\ Tm & 0.10 & 0.11 & 0.09 & 0.072 & 0.068 & 0.18 & 0.23 & 0.13 & 0.062 \\ Yb & 0.67 & 0.69 & 0.56 & 0.45 & 0.44 & 1.13 & 1.40 & 0.76 & 0.39 \\ Lu & 0.11 & 0.11 & 0.092 & 0.12 & 0.08 & 0.17 & 0.21 & 0.12 & 0.063 \\ \hline \hline \end{tabular}  
* Rock types: D—dunite, PL—plagicase-bearing dunite, Web—websterite, Whr—wenhrite, Pyr—pyroxenite. Analysis IL-5 is from [36]. Sample location is shown in Figure 1c.  
\end{table} 
Table 1: _Cont._  
Figure 3: Geochemistry of ultramafic cumulate rocks from the Ildeus intrusion reflecting their subduction-related tectonic setting. (**a**) A (Na\({}_{2}\)O+K\({}_{2}\)O)—F (total FeO)—M (MgO) diagram for Ildeus intrusion. Fields of arc-related cumulate and arc-related non-cumulate plutonic rocks are from [57] with modifications from [36]. (**b**) Primitive mantle-normalized trace-element patterns for plutonic rocks from the Ildeus intrusion (54 samples). Primitive mantle normalizing values are from [58]. Please note that olivine websterite IL-5 is characterized by arc-related ultramafic cumulate chemistry, including well-defined HFSE (Nb, Ta and Hf) depletions in (**b**), typical of primitive convergent zone magmas [51; 52]. sulfosalts (gersdorffite, gratonite, arsenopyrite), sulfates (barite), native metals (W, Pt, Zn, Bi, Au and Ag) and various Ni-Cu-Zn-Ag-Au, Cu-Zn-Sn, Pb-Sb, Fe-Pt, Ni-Rh- Pt and Pd-Pt alloys [36].