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This study analyzes late Cenozoic alkali basalts from the Cima volcanic field in California, using major and trace element data alongside isotopic compositions to characterize their sources over the past 8 million years. The basalts are categorized into three groups based on age and compositional characteristics, with Group 1 being the most prevalent and derived from light rare earth element-enriched portions of the Pacific mid-ocean ridge basalt source. The findings suggest that ancient lithospheric mantle
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- 2310716210004
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- EN