When the iron oxide falls it make layers, columns, and piles of ironstone in the sandstones. To summarize the information above the iron oxide determines the shape ( balls, spheres, and discs), size , and thickness. The grains shape forms when the grain flows like an avalanche and the grains of sands slump down to the bottom of the dunes. Now let’s talk about the porosity and the permeabilities ( Revolvy,(.n.d). The porosity can come vertical or horizontal in conductions. However, permeabilities is water at 100% from the lower middle of the formation to the top ( Castle, Byrnes, 2016).
Now let's move on to the Tuscarora formation which was deposited in the Silurian age ( 440-417 million years ago) ( Tuscarora Formation, PAS;19). Aside from the age we have its one member which is the Castanea! The appearance of the rock can be thick or thin , can be bendded , the color can go from white to gray, and it can contain fine rich grain. The exposed areas of the Tuscarora is in ridge crests, water gaps that are in the Ridge and Valley. They are also found in the Appalachians of Pennsylvania, Maryland, and West Virginia (