Figure 4. Collage of U-Pb isotopic results; all error envelopes are 2 sigma. (A) Tera-Wasserburg plot of U-Pb data obtained from individual zircons from Phenix City Gneiss sample TH-04 using the SHRIMP-RG. (B) Combination histogram/relative probability plot of U-Pb ages of individual zircons from the Moffits Mill Schist sample UB-1-03 using the SHRIMP-RG. (C) Tera-Wasserburg plot of U-Pb data from individual zircons extracted from the leucocratic phase of a migmatitic part of Moffits Mill Schist sample A-13 using the SHRIMP-RG. (D) Tera-Wasserburg concordia plot of U-Pb TIMS data from four rutile grains extracted from Hollis Quartzite sample H-1. (E) Histogram plotting U-Pb ages determined for all Paleozoic zircons, mostly rims, from Uchee terrane samples reported herein.