pebble the grass
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pebble the grass |
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| navigate by keyword : 256 artifacts based clast cobbles conglomerate considered crop dating diameter earliest field flooring flower garden generally granules grass grassland green history human krumbein larger lawn leaf man made meadow millimetres nature palaeolithic particle pebble pebbles period phi plant rock scale sedimentology shrub size smaller termed tools tree yard |
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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 (2 to 4 millimetres diameter) and smaller than cobbles (64 to 256 millimetres diameter). A rock made predominantly of pebbles is termed a conglomerate. Pebble tools are among the earliest known man-made artifacts dating from the Palaeolithic period of human history. |
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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