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Show 529 " In 1927 I went from Moab down nearly to Monticello, thence turned northwest and went down Indian creek with an automobile almost to the junction of the rivers." R. 1309- 1310. During the summer of 1926 he had under his supervision four field parties, two working coal north of the railroad track and two working oil, and in the course of visiting those parties and supervising their work he was over, either by boat or by horseback, a greater part of that area between the Green and Colorado Rivers. [ That section of the country which lies towards the Colorado River from the wagon road which runs from Greenriver to Moab.] " A That pie- shaped area between the Green and Colorado rivers is occupied mostly by a horizontal strata consisting of solid a sandstone, some of which are four or five hundred feet in thickness, below which occur shales, some limestones, and other rock, with the result that in an arid region such as you have there, where erosion is quick and rapid, when water flows it flows torrentially, and the cutting is straight down, not like you would have in a region, say in Wisconsin or Michigan or some place where the topography is rolling formation, continuous rainfall; but the cutting in this country is straight down. [ R1310- 1311.] " Where you have those all native heavy sandstones and shale you have got the sandstone standing out on |