Charles H. Langmuir

Jun 14, 2024 | science.org | Daniel Abebayehu |Stephen Turner |Tanmoy Saha |Charles H. Langmuir

AbstractA long-standing paradigm of arc geochemistry is that the trace element compositions of arc lavas arise from two compositionally distinct slab components: an aqueous dehydration fluid from the subducting igneous ocean crust that transports “fluid-mobile” elements, such as barium (Ba), and a sediment melt that supplies thorium (Th) and the light rare earth elements.