Fracking the Marcellus shale

I was surfing the net and came across http://exploreshale.org/ while looking at Agile .  This is a quick and easy presentation on fracking oil shales - namely the Marcellus shale in Pennsylvania. I liked the way they made it so any lay person could understand and follow how it is done.
   When I went up to visit  the Cleveland suburbs of  Ohio, I could see a lot of work  with oil and gas wells were being done around where I had grown up.  I even got a photo, so of course I'm interested on what's being said since my mom still in the area.

  

The Cleveland shale with glacial sediments on top

 
 Another Musing : I enjoy Agile a lot because they deal with geophysic type material.  When I was in the Oil/Gas industry I would have loved to have access to the technical stuff they like to blog. I did take a course in the stuff they write about, years and years ago, so some of it I can actually understand what they are writing about.  I keep on thinking if I ever get back into that area of geology this material that Agile writes about would be very beneficial to know so I try to follow it as much as I can.
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