Mountain Building
The stage of mountain building where uplift, folding, and faulting occur.
What is the orogenic stage?
A bend in rock layers caused by compression.
What is a fold?
Rocks with layers or banding caused by directed pressure.
What are foliated rocks?
This national park contains famous thrust faults where older rocks lie on top of younger ones.
What is Great Smoky Mountains National Park?
This type of stress causes rocks to be pulled apart, forming normal faults.
What is tension?
These mountains represent the erosional stage due to their age and rounded features.
What are the Appalachian Mountains?
A fracture where rocks move relative to each other.
What is a fault?
This high-grade metamorphic rock forms from shale and has alternating light and dark bands
What is gneiss?
This park in Wyoming is dominated by normal faulting that uplifted its mountain range.
What is Grand Teton National Park?
This stress squeezes rocks together, creating folds and reverse faults.
What is compression?
Sediment buildup and terrane addition occur during this stage.
What is the accumulation stage?
A fold with the oldest rocks in the center and limbs dipping away.
What is an anticline?
This non-foliated rock forms when limestone is metamorphosed.
What is marble?
Death Valley and Great Basin are part of this physiographic province.
What is the Basin and Range Province?
Deformation of rock that bends rather than breaks is described as this.
What is ductile deformation?
The Laramide Orogeny created this western U.S. mountain range.
What are the Rocky Mountains?
A fault where the hanging wall moves down due to tension.
What is a normal fault?
Slate, phyllite, schist, and gneiss all come from this original rock type.
What is shale?
These mountains are younger and have sharper peaks than the Appalachians.
What are the Rocky Mountains?
When rock breaks instead of bending, it shows this type of deformation.
What is brittle deformation?
Olympic National Park contains rocks added to the continent through this process.
What is terrane accretion?
Movement is horizontal along this type of fault associated with transform boundaries.
What is a strike-slip fault?
Contact metamorphism occurs when rocks are “baked” by this.
What is magma?
The Blue Ridge, Piedmont, and Valley & Ridge belong to this larger mountain system.
What are the Appalachian Mountains?
This type of boundary is characterized by strike-slip faults.
What is a transform boundary?