Example 1	Texas Gulf Coast, Miocene Upper Frio Sandstone
Example 2	Texas Gulf Coast, Miocene Lower Frio Sandstone
Example 3	U.S. Gulf Coast Sandstone -- A transition zone?
Example 4	Illinois Basin, Ste. Genevieve Limestone, oolitic carbonate reservoir with microporosity
Example 5	Illinois Basin, Aux Vases Sandstone
Example 6	Colorado, Champlin #8 McCormick 49-3
Example 7	Wyoming Minnelusa “B” Sandstone
Example 8	Wyoming, Muddy Sandstone, Collums Field, Pan Am A-2 Norfolk
Example 9	Oklahoma, Middle Pennsylvanian Red Fork sandstone

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