PROXY POROSITY OF LINE +210

Pixels in red are those areas of lightest shades of gray, interpreted to represent zones of 25% or less coal. The figure is generated by: 1. Rasterizing the image to 256 shades of gray (tint); 2. Determining the minimum and maximum tints within the photo; 3. Normalizing this range and highlighting only those pixels that fall between 0 and 25% of these values. We assume that highlighted pixels represent zones of greatest porosity, and therefore potential reservoir distribution. The four zones represent areas of enhanced proxy porosity.

 

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