1. Adding “Time” to the Earthscope Image: Petrologic Analysis, Structural Analysis, and Monazite Geochronology of the Proterozoic Crust M. Williams, M. Jercinovic, K. Karlstrom, K. Mahan, G. Dumond

2. From Whitmeyer and Karlstrom

3. 1.65 Ga

4. 1.4 Ga

7. CD-ROM Synthesis, 2002

9. 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 Arc Accretion Yavapai Orogeny Mazatzal Orogeny Reactivation… Plutonism, Metamorphism, Deformation Grenville Orogeny Proterozoic Events Exhumation

10. Amphibolite-facies, mid-crustal metamorphism 0.3-0.4 GPa 10-15 km

12. Upper Granite Gorge, Grand Canyon

14. High-P- syntectonic Med.-P. (0.3-0.4 GPa), 400C Pluton-Influenced

16. From Shaw

20. CD-ROM Synthesis, 2002