krumbein |
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| navigate by keyword : asphalt background based black branch clast cobbles computer conglomerate considered flooring generally geology granules gravel great iron krumbein larger millimetres monochrome office particle pebble pebbles phi plant rock scale screen sedimentology size smaller soil stonewall termed tree trunk wood |
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| A pebble is a clast of rock with a particle size of 4 to 64 millimetres based on the Krumbein phi scale of sedimentology. Pebbles are generally considered larger than granules and smaller than cobbles. A rock made predominantly of pebbles is termed a conglomerate. |
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