Sr Isotopic Composition of Apatite from the Yeongju and Andong Granites: Isotopic Distinction between the Two Granites and Location of the Boundary

Abstract

Yeongju and Andong granites, located in the northeastern Yeongnam massif, reveal very similar emplacement ages but distinct initial isotopic compositions of strontium. However, previous studies used different boundaries to distinguish these batholiths. In this study, we determined Sr isotopic compositions of apatite separated from the granites of the area to find out the proper boundary and propose the location of such boundary based upon analysis.