Zircon geochemistry from early evolved terranes records coeval stagnant- and mobile-lid tectonic regimes.

ABSTRACT: Determining the mechanisms by which the earliest continental crust was generated and reworked is important for constraining the evolution of Earth's geodynamic, surface, and atmospheric conditions. However, the details of early plate tectonic settings often remain obscured by the intervening ~4 Ga of crustal recycling. Covariations of U, Nb, Sc, and Yb in zircon have been shown to faithfully reflect Phanerozoic whole-rock-based plate-tectonic discriminators and are therefore useful in distinguishing zircons crystallized in ridge, plume, and arc-like environments, both in the present and in deep time. However, application of these proxies to deciphering tectonic settings on the early Earth has thus far been limited to select portions of the detrital zircon record. Here, we present in situ t

SUBMITTER: Mixon EE 

PROVIDER: S-EPMC11441487 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature