Generation of sodium-rich magmas from newly underplated basaltic crust

Michael P. Atherton, Nick Petford

Research output: Contribution to JournalLetter

Abstract

SODIUM-RICH rocks of trondhjemite–tonalite–dacite (TTD) or –granodiorite (TTG) suites form much of Precambrian continental crust1. They are thought to have formed by partial melting of subducted oceanic crust2,3—a process that would have been much more widespread early in Earth history than at present, owing to the higher thermal gradients prevailing at that time4. Phanerozoic TTD suites do exist, however, and seem also to relate to subduction zones5. Defant and Drummond6 proposed that these suites form where young (
Original languageEnglish
Pages (from-to)144-146
Number of pages3
JournalNature
DOIs
Publication statusPublished - 11 Mar 1993

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