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<br />288:1 <br /> <br />The Junction Creek is flighly crossbedded, but horizontal <br /> <br />. bedding is conunon. The crossbedding is the wedge type and <br /> <br /> <br />ranges from high to low angle, medium to large scale. <br /> <br />According to Ekren and Houser (1958, p. 74), the formation <br /> <br />in McElmo Canyon consists of three vertically gradational <br /> <br />units. They state: <br /> <br />"The lower unit (30-60 feet thick) is <br /> <br />marked hy abundant horizontal bedding planes and low angle <br /> <br />cross-stratification; the middle unit (150-200 feet thick) <br /> <br />is cross-stratified at high angles with very few horizontal <br /> <br />bedding planes, and the upper unit is a flatbedded argillaceous <br /> <br />sandstone that weathers to hoodoos." Where it crops out, <br /> <br />it forms a prominent rounded cliff. <br /> <br />TIle Junction Creek probably is in the subsurface <br /> <br />throughout the project area. Reliable subsurface data as <br />. to its presence in the eastern part, however, are not <br /> <br />available. Here, the Junction creek, if present, would be <br /> <br />at depths greater than 2,000 fcet. <br /> <br />. <br /> <br />:'JS- <br />