Figure 2
From: Diversity in early crustal evolution: 4100 Ma zircons in the Cathaysia Block of southern China
U-Pb Concordia plots for the two ancient zircons.
The CL image (before the second session of U-Pb dating) and age histogram for each grain is also indicated for each grain as insets. The gray filled columns in the lower right insets represent the analyses with concordance > 88%, while the open ones are <88% concordance analyses. Error ellipses are shown in 1σ.
