Definition of Bedding in Geology

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By Corina Fiore
eHow Contributing Writer

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A geological bed or stratification is a layer of sediment or volcanic material that is distinctly separate from other layers. Beds can vary in thickness from 1 cm thick to over 3 meters thick. Beds vary in texture and their resistance to weathering from one bed to another. The bedding plane separates beds and is a area easily fractured. There are a number of geologic laws related to stratification.