Changes

==Factors controlling permeability==

==Factors controlling permeability==

[[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.<ref name=KandM1943>Krumbein, W. C., and G. D. Monk, 1943, Permeability as a function of the size parameters of unconsolidated sands: American Institute of Mining and Metallurgical Engineers, Technical Publication 1492. 11 p.</ref>)]]

[[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.<ref name=KandM1943>Krumbein, W. C., and G. D. Monk, 1943, Permeability as a function of the size parameters of unconsolidated sands: American Institute of Mining and Metallurgical Engineers, Technical Publication 1492. 11 p.</ref>)]]

===Pore geometry===

===Pore geometry===