Extended whole-rock major, trace element, and Sr–Nd–Pb isotopic dataset for metadiabase samples from the Araguaia Belt, Brazil.

This dataset compiles major and trace element concentrations together with Sr–Nd–Pb isotopic compositions for metadiabase samples from the Araguaia Belt. Major and trace element data were originally reported in Cruz and Gorayeb (2020). Some samples were re-analyzed here to include additional elements (e.g., Pb). Three additional samples (DA-07B, DA-10, and DA-16A) are included for which no prior geochemical data existed. The dataset provides a unified geochemical and isotopic reference for these mafic rocks. Columns include major oxides (wt%), trace elements (ppm), and isotopic ratios (⁸⁷Sr/⁸⁶Sr, ¹⁴³Nd/¹⁴⁴Nd, ²⁰⁶Pb/²⁰⁴Pb, ²⁰⁷Pb/²⁰⁴Pb, ²⁰⁸Pb/²⁰⁴Pb) with associated uncertainties.