Earth & Space Terms: Chapter 6

Front

Sediments

Back

Small pieces of rock that are moved and deposited by water, wind, glaciers, and gravity.

Front

Lithification

Back

The physical and chemical processes that transform sediments into sedimentary rocks.

Front

Cementation

Back

Occurs when mineral growth glues sediment grains together into a solid rock.

Front

Bedding

Back

The primary feature of sedimentary rocks is horizontal layering.

Front

Grade Bedding

Back

The particle sizes become progressively finer and lighter towards the top.

Front

Cross Bedding

Back

Formed as inclined layers of sediment are deposited across a horizontal layering.

Front

Clastic Sedimentary Rocks

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Formed from the abundant deposits of loose sediments that accumulate on Earth's surface.

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Clastic

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Means broken, are further classified according to particle size.

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Porosity

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The percentage of open spaces between grains in a rock.

Front

Evaporites

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Layers of chemical sedimentary rocks.