Fig. 5
Cathodoluminescence (CL) images of representative zircon samples. Analysed spots are outlined in white. Resultant 206Pb/238U apparent ages (in Ma) are shown with 2σ errors. Scale bars are 100 μm: a Distinct xenocrystic core within zircon with oscillatory zoning (sample EM-2); b Zircon with oscillatory zoning (sample EM-2). c Zircon with patchy internal high luminescence (sample LC-4); d Zircon with oscillatory zoning and a high luminescent rim (sample EM-8)