Group BChristine GammansOlivia MillerMorgan RosenbergMason Edwards

Tectonic Provinces1 – Rio Grande Rift 2 – Rocky Mountains 3 – Colorado Plateau 4 – Basin & Range5 – Snake River Plain 6 – Idaho Batholith 7 – Columbia Plateau 8 – Cascades9 – Sierra Nevada 10 – Coast Ranges WA/OR 11 – San Andreas Fault System

Tectonics of Western North AmericaPresent

165 Ma

23 Ma

65 Ma

150 Ma

Neo

gene

Pale

ogen

eCr

etac

eous

Jura

ssic