Changes

==Factors controlling permeability==

==Factors controlling permeability==

[[file:permeability_fig2.png|thumb|300px|{{figure number|2}}Relationship among permeability, sorting, and grain size. (From <ref name=pt05r124>Pettijohn, F. J., 1975, Sedimentary rocks, 3rd ed.: New York, Harper and Row, p. 628.</ref>; after Krumbein and Monk, 1942.)]]

[[file:permeability_fig2.png|thumb|300px|{{figure number|2}}Relationship among permeability, sorting, and grain size. (From Pettijohn<ref name=pt05r124>Pettijohn, F. J., 1975, Sedimentary rocks, 3rd ed.: New York, Harper and Row, p. 628.</ref>; after Krumbein and Monk, 1942.)]]

===Pore geometry===

===Pore geometry===