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North African soil sample locations and radiogenic isotope compositions in deflatable soil fractions from North Africa

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PANGAEA2022-01-01 更新2026-04-09 收录
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Further details and definitions:* εNd : epsilon Nd following the equation : εNd = ((143Nd/144Nd)sample/(143Nd/144Nd)CHUR - 1) * 10,000 . The unit should be "per ten thousand" but it is always expressed without. CHUR : Chondritic Uniform Reservoir with (143Nd/144Nd) = 0.512638* PSAXX : Potential source Area XXX* 2SE : Two standard error* (Eu/Eu*)N : Europium anomaly calculated following : (Eu/Eu*)N = EuN/ racine(SmN + GdN).* EuN is Europium concentration in the sample normalized to Europium concentration in the Upper Continental Crust.* SmN is Samarium concentration in the sample normalized to Samarium concentration in the Upper Continental Crust.* GdN is Gadolinium concentration in the sample normalized to Gadolinium concentration in the Upper Continental Crust.* Method: HF-HNO3 acid digestion followed by isotope ratio measurements using thermal ionization mass spectrometry (TIMS Triton, ThermoFisher)* Information : The Bodélé Depression samples (prefix: CH) were analyzed as bulk material.

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2022-01-01
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