(geology) Post-Tertiary deformation of the crust of the earth in western North America.
Cascadian orogeny
| Sci-Tech Dictionary: Cascadian orogeny |
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 | Tertiary |
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 | Write short notes the following topics1unconformity 2subduction zone 3 himalayan orogeny? |
| Ended with the Allegheny Orogeny? |
| Which period ended with the Allegheny Orogeny? |
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