The Archaean: Geological and Geochemical Windows into the Early Earth

• Κύριος συγγραφέας: Glikson, Andrew Y. (Συγγραφέας)
• Συγγραφή απο Οργανισμό/Αρχή: SpringerLink (Online service)
• Μορφή: Ηλεκτρονική πηγή Ηλ. βιβλίο
• Γλώσσα: English
• Έκδοση: Cham : Springer International Publishing : Imprint: Springer, 2014.
• Σειρά: Modern Approaches in Solid Earth Sciences, 9
• Θέματα: Earth sciences.; Geochemistry.; Sedimentology.; Planetology.; Physical geography.; Earth Sciences.; Earth System Sciences.

Determinations of the age of the Earth as 4.54 ± 0.05 billion years (Ga) leave large part of its earliest history unknown. Isotopic and geochemical signatures in rocks as old as ~4.0 Ga indicate an evolutionary trend from mafic-ultramafic crust to tonalite-trondhjemite-granodiorite (TTG)-dominated m...