Wentworth Grade Scale

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Wentworth Grade Scale

sedimentology

Learn about this topic in these articles:

classification of sedimentary rocks

In sedimentary rock: Grain size
This millimetre, or Udden-Wentworth, scale is a geometric grain-size scale since there is a constant ratio between class limits. Such a scheme is well suited for the description of sediments because it gives equal significance to size ratios, whether they relate to gravel, sand, silt, or clay. The…
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devised by Udden

In grain size scale
Wentworth, who expanded the definitions of the various grades to conform with actual usage by researchers; most sedimentologists have adopted the Udden scale with the Wentworth modifications.
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