EARTH SCIENCE
Platte Canyon High
School
Bailey, Colorado
USEFUL
INFORMATION
Sediment Grain Size Scale
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EARTH SCIENCE |
Platte Canyon High
School |
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USEFUL
INFORMATION |
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| Phi | Descriptive | mm |
|
-8 to -12 -4 to -8 -1 to -4 4 to -1 8 to 4 14 to 8 |
Boulder Cobble Pebble Sand Silt Clay |
256 + 64 - 256 2 - 64 1/16 - 2 1/256 - 1/16 < 1/256 |
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phi = -log2S S = size in mm |
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