Plate Tectonics of Montana and

the Northern Rockies^©

Copyright by David Baker

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Table of Contents

• Introduction to Plate Tectonics
• Assemblage of Micro-Plates and Terranes in North America
• Suturing of Archean-Age Hearne and Wyoming Provinces
• Trans-Hudsonian Suture--Collision of Superior with Hearne/Wyoming
• Rifting and the Belt Basin
• Passive Continental Margin
• Accretion of Exotic Terranes
• Assembly of the Supercontinent Pangaea
• Rifting of Pangaea and Opening of the Atlantic Ocean
• Fold and Thrust Belt of the Northern Rockies (Thin-Skinned Tectonics)
• Flat-Slab Subduction and Laramide or Thick-Skinned Tectonics
• Laramide Volcanism and Delamination
• Basin and Range Extension
• Yellowstone Hot Spot

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