| OCR Text |
Show 48 A trail the guide joints being used. plotted on used as rose a base upon which the location of a listed with The vertical diagram rose was were the very prominent joints trends thus obtained were only joint The direction of diagram. indicates the joint trend while the the individual lines indicate the area were ridges plotted from the graph enlargement of 1 inch to 660 Commodity Stabilization Service, culture. The center of the any within this of center on the of length of occurrence. frequency The main trends of the theater the line an same amphi aerial photo obtained from the feet$) S. Department of Agri Ue photograph was used to eliminate significant perspective displacement. Figure 22 shows the relationship believed to exist between the erosional features and the joint system, those ridges joints within the the trends of the dominant closely follow especially The trends of the walls and trending northeast. Thus the dissection of the plateau rim into the same area. myriad walls, peaks and spires within the canyon, was not a random process but closely controlled the by existing joint system within the Wasatch Formation. Hardness and Methods of mation were Investigation.- Samples erosion Point, Wasatch Formation. intervals are In the of the Wasatch For collected at intervals where resistance t<;> from Sunset Wasatch Formation Composition'of was through down a change in the A Brunton traverse noted. The individual stations and the plotted on lO-gram representative portion hydrochloric beakers. The made the sampling Figure 23. laboratory these samples centrated was the entire thickness of was were quartered, dissolved in a and 1 part acid to 9 parts water solution, lQ-gram quantity was selected after a a con in 250ml. test was |
