Talk:Particle size (grain size)

clay vs. colloid
So, in the chart, why is a clay classified as " > 8" instead of "10 to 8"? Seems like only Boulder and Colloid should be less than or greater than, respectively. Everything else should be a range. If there's a reason could we put it in the article? --JaGa (talk) 08:39, 19 June 2008 (UTC)

Phi Scale seems to have been flipped
Phi Scale in this table should be flipped I think

Boulder should be -8 through -12 Coarase sand 0 to 1 Clays 8 through 14

142.166.187.57 (talk) 16:56, 8 June 2011 (UTC)

I am a Ph.D. candidate in marine geology - I have noticed that your phi scale is flipped as well. Please correct! — Preceding unsigned comment added by 70.186.202.233 (talk) 00:38, 6 July 2011 (UTC)