Changes

===Comments===

===Comments===

Information not recorded elsewhere on the form can be included in the “Comments” column on the far right (Figure 1). Such items as color, presence of hydrocarbon residue, and inferred depositional environment can be placed here. Color should be determined using the standard color chart distributed by the Geological Society of America.<ref name=pt05r67>Goddard, E. N., 1979, Rock-Color Chart: Boulder, CO, Geological Society of America.</ref>.

Information not recorded elsewhere on the form can be included in the “Comments” column on the far right (Figure 1). Such items as color, presence of hydrocarbon residue, and inferred depositional environment can be placed here. Color should be determined using the standard color chart distributed by the Geological Society of America.<ref name=pt05r67>Goddard, E. N., 1979, Rock-Color Chart: Boulder, CO, Geological Society of America.</ref>

==Rock-log calibration==

==Rock-log calibration==