Schematic Maps and Cross Sections of Intrusion of Birch Creek Pluton, Nos. 4-6.

Black polygon outlines eventual outcrop area of pluton. Green/Gray = Wyman Formation; Yellow = Reed Formation; Blue = Deep Spring Formation; Orange = Campito Formation; Red = granite. A-A' is line of cross section. Horizontal line is present level of erosion.

4. Granite continued to expand upward and into the core of the pluton, further overturning and stretching the Reed Formation. 5. Granite filled its eventual space. 6. Map of the present form of the pluton and the deformed rock units in the anticline.

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