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vocab chapter 1
Term | Definition |
---|---|
Stress | The force that push and pull on the Earth 's crust causing it deformation. |
Crust | The surface layer of the Earth. |
Deformation | In geology, any change in the original shape or volume of rocks. |
Compression | The type of stress that squeezes rocks together. |
Tension | The type of stress that pulls rocks apart. |
Shearing | The type of stress that pushes rocks with the crust in two apposite, horizontal directions. |
Fracture | Break or crack. |
Fault | A break or crack along with rocks move. |
Hanging Wall | The block or rock above fault. |
Foot Wall | The block or rock below a fault. |
Normal Fault | A fault in which the hanging wall moves down relative to the foot wall. |
Reverse Fault | A fault in which the hanging wall moves up relative to the foot wall. |
Thrust Fault | A reverse in which the hanging wall slides over the foot wall. |
Lateral Fault | A fault along which the blocks move horizontally past each other. |
Fault-block mountion | A mountain formed by blocks of rock uplifted from normal fault. |
Rift Vally | A vally formed when the block land between two normal fault slides downward. |
Fold | A bend in rock. |
Anticline | An upward fold in a rock. |
Syncline | A downward fold in a rock. |
Plateau | A large area of flat land that is raised high above sea level and that consist of horizontal rock layers. |
Dome | A raised area shaped roughly like the top half of a sphere, often formed by magma pushing upward on the rock layers above it. |
Mantle | The layer of the earth that extends from the bottom of the crust to the core. |
Isostasy | The balancing of the downward force of the crust and the upward force of the mantle. |