info on the different formations

This link provides an in depth scholarly article on the J Sandstone formation, the Codell and the Niobrara.
Whilst it is quite in depth it no doubt will allow many of the newbies and those who are in the game to gain an insight into the reserves Samson is tapping into.
Its probably not something to open and give a minute scan, it is very informative and well worth spending the time reaodng properly.

http://www.searchanddiscovery.com/documents/98003/index.htm

Do not overlook the the links to maps and images at the bottom of the page.