Four events of zircon growth with specific mechanisms, crystallization temperatures and U-Pb ages: Implication to the 'spatiotemporal' formation process of a granitic pluton, the Toki granite, Central Japan

Abstract

Zircon growth collected from a granitic pluton shows four (1^st – 4^th) events with specific mechanisms, crystallization temperatures and U-Pb ages, revealing the sequential formation process from intrusion through emplacement to crystallization / solidification.   The events are recognized by: 1) internal structure of zircon based on the cathodoluminescence observation, 2) crystallization temperatures by the Ti-in-zircon thermometer in the internal structure and 3) U-Pb ages in the internal structure.