Fig. 4
From: Enhanced U-Pb detrital zircon, Lu-Hf zircon, δ18O zircon, and Sm-Nd whole rock global databases

Thousands of U-Pb detrital zircon grains processed by publication year: (blue) LA-ICP-MS analyses for all labs, (green) LA-ICP-MS analyses conducted at the Arizona LaserChron Center, and (red) SHRIMP/SIMS analyses for all labs.