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Adding “Time” to the Earthscope Image: Petrologic Analysis, Structural Analysis, and Monazite Geochronology of the Proterozoic Crust M. Williams, M. Jercinovic,

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Presentation on theme: "Adding “Time” to the Earthscope Image: Petrologic Analysis, Structural Analysis, and Monazite Geochronology of the Proterozoic Crust M. Williams, M. Jercinovic,"— Presentation transcript:

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

5

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7 CD-ROM Synthesis, 2002

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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

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12 Upper Granite Gorge, Grand Canyon

13

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

15

16 From Shaw

17

18

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20 CD-ROM Synthesis, 2002

21


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