Title: A trace element perspective on Archean crust formation and on the presence or absence of Archean subduction
Abstract:The early continental crust is dominated by high-grade gneisses with the composition of sodic granites (the tonalite-trondhjemite-granodiorite or TTG suite) that date as far back as >3800 Ma. These ar...The early continental crust is dominated by high-grade gneisses with the composition of sodic granites (the tonalite-trondhjemite-granodiorite or TTG suite) that date as far back as >3800 Ma. These are considered by many to be formed in subduction zones, and so have a critical role in the discussion about when plate tectonics may have begun. Trace elements can be used to learn about the identity of minerals in the source rocks during melting, but only indirectly to infer tectonic environments. The integrated results from experimental petrology and major and trace element geochemistry of the TTG suite indicate that most of...Read More
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: book-chapter
Indexed In: ['crossref']
Access and Citation
Cited By Count: 66
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