Changes

===Sedimentary structures===

===Sedimentary structures===

Sedimentary structures are recorded to the right of and just inside the grain size curve. There is no single set of standardized symbols for sedimentary structures. Examples are given in Swanson<ref name=pt05r150>Swanson, B. F., 1981, A simple correlation between permeabilities and mercury [[capillary pressure]]s: Journal Petroleum Technology, v. 33, p. 2498–2504., 10., 2118/8234-PA</ref> and Bebout and Loucks<ref name=pt05r24 />. Realistic sketches of observed structures may be more useful than standard symbols. The vertical succession of sedimentary structures should be recorded as accurately as possible because this succession is often the key to successful environmental interpretation. Description, classification, and interpretation of sedimentary structures are discussed by Collinson and Thompson<ref name=pt05r35>Collinson, J. D., Thompson, D. B., 1989, Sedimentary Structures: Boston, MA, Unwin Hyman, 207 p.</ref> and Lindholm<ref name=pt05r103>Lindholm, R. C., 1987, A Practical Approach to Sedimentology: Boston, MA, Allen and Unwin, 276 p.</ref>.

Sedimentary structures are recorded to the right of and just inside the grain size curve. There is no single set of standardized symbols for sedimentary structures. Examples are given in Swanson<ref name=pt05r150>Swanson, B. F., 1981, A simple correlation between permeabilities and mercury [[capillary pressure]]s: Journal Petroleum Technology, v. 33, p. 2498–2504., 10., 2118/8234-PA</ref> and Bebout and Loucks.<ref name=pt05r24 /> Realistic sketches of observed structures may be more useful than standard symbols. The vertical succession of sedimentary structures should be recorded as accurately as possible because this succession is often the key to successful environmental interpretation. Description, classification, and interpretation of sedimentary structures are discussed by Collinson and Thompson<ref name=pt05r35>Collinson, J. D., Thompson, D. B., 1989, Sedimentary Structures: Boston, MA, Unwin Hyman, 207 p.</ref> and Lindholm.<ref name=pt05r103>Lindholm, R. C., 1987, A Practical Approach to Sedimentology: Boston, MA, Allen and Unwin, 276 p.</ref>

===Accessories===

===Accessories===