cretaceous period: environmental and tectonic...

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1

Cretaceous Period:Environmental and

Tectonic Events

Sea Level and Cratonic Sequences

Cretaceous Paleogeography Western MarginTectonics

Why doesDeformation

MigrateEastward?

Sevier Orogeny

2

Sevier Orogeny and Thrust FaultingWhere did

sediments fromSevier Orogeny

Accumulate?

Clastic Wedges Revisited! Cretaceous Climate

Larson, 1991

Ocean CrustFormation and

Climate

Changes inthe Rate ofSeafloor

Spreading

3

Spreading Rates and Weathering:Feedback!

CO2 Feedbacks with Weathering

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