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Evaluating the crystallization and eruptive histories of low-titanium basalts with 2D and 3D studies

Wilbur, Z.E., Barnes, J.J., Eckley, S.A., , Domanik, K.(2024). Evaluating the crystallization and eruptive histories of low-titanium basalts with 2D and 3D studies. Geochimica et Cosmochimica Acta, 389, 110-124. https://doi.org/10.1016/j.gca.2024.10.018

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Datasets

numbertitleMethodsvariables analyzed
12D modal mineralogy determined from image thresholding of polished thin sectionsOLIVINE, PYROXENE, PLAGIOCLASE, ILMENITE, SILICA, APATITE, SULFIDE, TOTAL
2Average pyroxene chemistry for low-, medium-, and high-Ca pyroxene compositionsSiO2, TiO2, Al2O3, Cr2O3, FeO, MnO, MgO, CaO, Na2O, TOTAL, WOLLASTONITE, ENSTATITE, FERROSILITE
3Average apatite compositionsSiO2, SO3, Ce2O3, Y2O3, FeO, MnO, CaO, P2O5, F, Cl, TOTAL
4Average metal compositions and average Ni/Co ratio determined from wt.% values for metal grainsFe, Ni, Co, P, Si, Cr, Mn, S, Mg, Al, Ti, TOTAL
S3Olivine average compositionsSiO2, TiO2, Al2O3, Cr2O3, FeO, MnO, MgO, CaO, TOTAL, FORSTERITE, FAYALITE
S4Average anorthite compositionsSiO2, TiO2, Al2O3, FeO, MgO, CaO, BaO, Na2O, K2O, TOTAL, ANORTHITE, ALBITE, ORTHOCLASE
S5Average K-feldspar compositionsSiO2, TiO2, Al2O3, FeO, CaO, BaO, Na2O, K2O, TOTAL, ANORTHITE, ALBITE, ORTHOCLASE
S6Average ilmenite compositionsTiO2, SiO2, ZrO2, Al2O3, Cr2O3, FeO, MnO, MgO, CaO, TOTAL
S8Average glass compositionsSiO2, TiO2, ZrO2, Al2O3, Cr2O3, FeO, MgO, CaO, BaO, Na2O, K2O, P2O5, SO2, Cl, TOTAL
S9Average troilite compositionsFe, Ti, Si, Ni, Co, P, S, TOTAL
S7Average chromite and ulvöspinel compositionsSiO2, TiO2, ZrO2, Al2O3, Cr2O3, V2O3, FeO, MnO, MgO, CaO, TOTAL

Methods

method namelaboratorymethod comment More details are available for the following variables
CALCULATEDUNKNOWNN/A
ELECTRON MICROPROBEUNIVERSITY OF ARIZONACAMECA SX-100
POINT COUNTINGUNIVERSITY OF ARIZONAImageJ software and employing pixel count analyses of X-ray element maps following the methods of Wilbur et al. (2022)

Samples

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