Most all fracturing fluid is just water , and in some cases they add a bit of "heft" by adding GUAR GUM. This is a veggie based material that is more like soybean gum.
You are in ALaska no? . The MArcellus is an Appalachian Formation name. So Im not sure where you are referring to. There are MArcellus equivalents all ov er (lower to mid Marine Devonian), The mapping of Tiktaliik was based on a p[re-drift location of Non marine Devonian units that were originally joined but now are separated into Canadian/Newfoundlandian? Icelandic and /Northwestern Appalachian units.
The joint patterns Of tghe MArcellus in the NE Appalachians are at a set series of angles away from the major deformation sequences. In our case, the major joint sets are NE-SW by about 95 degrees off true N. Then there are a series of "imbricate" joints (repeated but at different angles) These continue off the main joint sets at about 30 degree increments. Joints are usually straight for their pattern and there are several different sets that repeat the rock mineral trends, bedding, dip of bedding etc. Usually when we map these things , we plot them on circular plots called Stereo nets. and the point of the dip/ strike and trend of the joints, faults, cleavage etc are plotted as dots on the stereo net. Then we usually contour them to understand the local trend. Regional trends are mapped as we lay out several hundred of these stereo nets on a digital ploter and overlay them on a map. We can see that all these fractures vary with distance and form at the point of tghe least stress that the rock has been subject to.
When you mentioned an AAPG article, which one did you refer to? maybe I have it here and can see the joint sets that you were speaking of.