List the six orogenic episodes that occurred during the creation of the Cordillera in Western North America, from oldest

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List the six orogenic episodes that occurred during the creation
of the Cordillera in Western North America, from oldest to
youngest. Give each orogeny's name, age, location, notable
traits, and any other factors that set it apart. Figure 18-25 in
your textbook shows only five events. Add Colorado's Ancestral
Rocky Mountain (ARM) orogeny to the list (and put it in the correct
order). What is the significance of the "eastward shift" in
mountain formation in the western United States?

List The Six Orogenic Episodes That Occurred During The Creation Of The Cordillera In Western North America From Oldest 1 (102.88 KiB) Viewed 100 times

OROGENY PERIOD Neogene & Quat. Paleogene Laramide Cretaceous Sevier Nevadan Eastward shift Jurassic Triassic Sonoma Permian Carboniferous Antler Devonian FIGURE 18-25 Summary of major orogenic events in the eastern Cordilleran region. Between Jurassic and Paleogene time, orogenic activity migrated eastward.