Figure 3
From: High Pressure Metamorphism Caused by Fluid Induced Weakening of Deep Continental Crust
U-Pb geochronology. Top: Concordia diagram with U-Pb analyses of zircon from the pegmatite. Ellipses indicate 2σ uncertainties. Bottom: Cathodoluminescence images of typical zircons in the sample (about 100–200 μm wide). The one on the left displays an irregular outer shape, internal regular growth zoning and some feldspar inclusions (in black), the one to the right shows minor straight zoning and a network of fractures healed by new zircon.
