Sr isotope systematics of K-feldspars in plutonic rocks revealed by the Rb-Sr microdrilling technique

This study shows that K-feldspar crystals from slowly cooled plutonic rocks do not necessarily preserve their original Sr isotope composition. However, Sr isotope traverses through single crystals can give robust records of the mm-scale isotope system behaviour also in older plutonic rocks relevant for solving petrological or geochronological problems.