Chapter 11 Test Review. Place these notes into your Geology Notebook. Define C11 Vocabulary into your Geology Notebook. A continental margin is a boundary between continental crust and oceanic crust. Features of a passive continental margin:
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Place these notes into your Geology Notebook
Features of a passive continental margin:
The Himalayas are forming as a result of two continents in collision.
Volcanic rocks exist along the northern edge of the Himalayas because before India collided with Asia, subduction occurred.
Stress on rock layers that involves forces pushing in opposite directions is called shear stress.
The compass direction of a fold or a rock layer exposed at the surface along a fold is called the strike.
Synclines are downfolds in rock, whereas anticlines are upfolds in rock.
Valley and ridge locations in the Valley and Ridge provinces of the Appalachian Mountains correspond primarily to weathering rate of rock.
The San Andreas Fault is an example of a strike-slip fault.
Joints can be the result of the same stresses that form mountains, provide channels through which water flows, and their surface is usually a plane.
The Adirondack Mountains of New York are not an example of fault-block mountains.
Large blocks of crust that have dropped between normal faults are called grabens.
Dome mountains are not usually associated with normal faults.
Dome mountains are nearly circular folded mountains.
Describe the differences between dome mountains and fault-block mountains in terms of how they are formed.
Dome mountains are formed by uplifting forces, either igneous intrusions of forces that arch rocks upward. They are round and usually appear alone.
Fault block mountains are whole blocks of crust forced upward as a result of normal faulting caused by tensional stress. They exist as chains.
Explain why caverns can form along joint planes.
Joints are breaks in bedrock along which no movement has occurred. They can provide channels for fluids. Groundwater that flow through them and dissolves limestone can cause cavern formation.