Fig. 5

Representative cathodoluminescence images of zircons with location of geochronological analyses. The ages shown in italic character are concordant ages (errors are 2). a zircon with a faint oscillatory zoning showing a broad low-cathodoluminescent core surrounded by a small, fine oscillatory zoned rim (albitite GM1). b zircon fragment showing dark un-zoned core and spongy structures on the rim (albitite GM1). c prismatic, oscillatory zoned zircon characterized by faint banding (quartz-feldspathic breccia PC11). d sub-prismatic zircon showing an inherited rounded core surrounded by a weakly luminescent oscillatory zoned rim (quartzitic sandstone PP1)