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The stratigraphic columns on the following pages illustrate measured sections from north to south, hinge to hinge. An Excel macro was used to draw the columns based on field measurements of thickness and sandstone to shale ratio. Beds less than 10 cm were grouped and averages. Beds crossed by a diagonal line have poor exposure. Some beds in Sections I and IV are lettered for matching within each section. Symbols used in the column are:
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