1. INTRODUCTION  
2. DATA AND GC SAMPLE SELECTION  
2.1. Sample Definition  
2.2. GC Subsamples  
3. AGE, [Z/H], [Fe/H], AND [α/Fe] MEASUREMENTS  
4. RESULTS  
4.1. Radial Gradients  
4.2. Azimuthal Variations  
5. DISCUSSION: THE ASSEMBLY HISTORY OF M87 AND THE VIRGO CLUSTER CORE  
6. SUMMARY