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Section 779.14(a) Continued. Rule 2.04.6 The mine plan area is located along the west flank of the Johnny Moore Syncline, one of the smaller synclines in North Park. The strike of this syncline is approximately north-south at the existing Marr Mine and becomes northwest-southeast in the Kerr north area. The plunge of the syncline is towards the south. The syncline is asymmetrical in that the dip of the west flank is much steeper than the dip of the east flank. Dips on the west flank range from 45 to 86 degrees and generally increase towards the north. Dips on the east flank generally increase towards the north from approximately 26 degrees to 45 degrees. Two(2) known faults, both believed to be normal faults, exist within the Kerr mine area. The faults, which are nearly perpendicular to the axis of the Johnny Moore Syncline, strike northeast-southwest and range in displacement from 100 feet to 150 feet. • Detailed structural characteristics are shown on the Kerr Mine Area Geology Map (Map 6a), and the Geologic Cross-Sections A-G (Maps 7a through 13a). Stratiaraohv The oldest formation exposed within the .mine plan area is the Pierre Shale. This formation, composed almost entirely of marine shale, is approximately 4,500 feet thick. The shale is predominately dark, usually olive, brownish or dark gray with occasional beds of lighter material. The shale is thin-bedded and practically homogeneous throughout the entire formation, although a few thin sandy beds may occur as shown in Figure 5, General Stratigraphic Column. The Coalmont Formation rests unconformably on the Pierre Shale and is the only coal-bearing formation in North Park. Averaging about 5,000 feet in • thickness, the Coalmont Formation is Early to Mid-Tertiary in age. This formation is actually divided into two (2) distinct unnamed members. The upper 1,500 feet consists of light, interbedded sandstones with occasional 779-12a Revised - P,~ril