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21 Cards in this Set

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Crust
The outermost solid layer of the Earth
Moho Discontinuity
The narrow zone of change between the Earth's Crust and the Mantle. A significant change in the Earth's mineral composition is thought to exist here.
Mantle
The portion of the Earth beneath the Crust and surrounding the core
Asthenosphere
Plastic Portion of the Mantle
Mesosphere
Rigid portion of the deep mantle
Mineral
A naturally formed inorganic substance that has an unvarying chemical composition
Magma
Molten material in the Earth's interior
Rock
Solid material composed of aggregated mineral particles at the Earth's surface
Outcrop
Solid rock that is found at the Earth's surface (Surface exposure of bedrock)
Bedrock
Residual rock that hasn't experienced weathering/erosion and is covered by soil, decompsed rock material.
Igneous Rocks
Rock formed by the solidification of high-temperature molten magma
Sedimentary Rocks
Rocks formed from the accumulations of sediment and mineral particles that is concolidated by the combination of pressure and cementation
Metamorphic Rocks
Rock that was originally something else byt has been drastically changed by the action of heat, pressure, shearing stress, or infusion of elements, all taking place at a substantial depth beneath the surface
Foliation
Banding that gives a wavy layered appearance to metamorphic rock
Schist
One of the most common metamorphic rocks; it is characterized by very narrow foliations
Gneiss
One of the most common metamorphic rocksl it is characterized by broad folations
Topography
Surface configuration of the Earth
Landform
An individual topographic feature
Geomorphology
The study of the characteristics, origin, and development of landforms
Relief
The difference in elevation between the highest and lowest points in an area
Uniformitarianism
The concept that the "present is the key to the past" in gromorphic processes. The processes now operating have also operated in the same way in the past. The processes incolced are not temporary , are permanent and "slow-acting."