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What We Actually See
What Does This Look Like?
Andes – True Scale
Where Does Ocean Crust Go? Hugo Benioff, How we know plate tectonics happens
Benioff’s Interpretation 1. How we know plate tectonics happens
Benioff’s Interpretation Updated 1. How we know plate tectonics happens
How Plates Move
A Subduction Zone
Subduction and Metamorphism
Why Mountains are High
Where the Plates Meet
Terranes in Western North America
Subduction Zone Rocks
Steinmann Trinity (1905) Serpentinite Pillow Basalt Radiolarian Cherts Characteristic of ophiolite settings Other Distinctive Rocks – Graywacke and Flysch – Blueschist
Magnesite Mines in Serpentinite
Molasse and the High Alps
Wisconsin 2 Billion Years Ago
1900 MY Penokean Orogeny
Before the Penokean Orogeny
Marshfield Terrane Collides
Assembling North America
1700 MY Granite and Rhyolite
Baraboo Interval Quartzites
1450 MY Wolf River Batholith
Wolf River Batholith
1100 MY Mid-Continent Rift
The Grenville Orogeny Begins
The Grenville Orogeny
A Subduction Zone
How Arcs Grow
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