430 F. B. WEEKS STRATIGRAPHY OP THE UNITA RANGE 



Paleozoic and Mesozoic beds which form the anticlinal slopes. Its aver- 

 age elevation is 9,000 to 11,000 feet and manj^ peaks exceed 13,000 feet, 

 the highest being Kings peak, 13,498 feet. 



CENTRAL AREA 



This region, var3dng from 10 miles in width on the west to 12 or 15 

 miles on the east, is formed of the horizontal strata of the "Uinta" forma- 

 tion more or less buried beneath debris not yet removed by erosion since 

 the melting of the glaciers. Hundreds of lakelets and ponds, held in 

 their rocky basins by accnmnlations of debris, still remain and grassy 

 parks and forest-covered areas occupy the greater part of this region. The 

 axis of the fold follows the northern rim of this central area, trending 

 in general with the peaks and ridges which form the crest of the' range. 

 The general character of this area is that of a basin 10 to 12 miles in 

 width, having a very uneven floor and hemmed in by bold escarpments 

 1,000 to 2,000 feet in height. To the south of the axis the streams head- 

 ing in the numerous amphitheaters have cut channels of constantly in- 

 creasing depth until where they pierce the' inclosing walls .they flow in 

 canyons 2,000 to 3,000 feet deep. 



SOUTHERN SLOPE 



The slopes which form the south side of the fold are moderately steep, 

 the underlying Paleozoic strata dipping 12 to 20 degrees and the Mesozoic 

 strata at higher angles up to 45 degrees. These slopes have been deeply in- 

 cised by the few main streams which drain the great interior region. The 

 main drainage of this area is accomplished through many small streams 

 heading in the Paleozoic strata cutting them at right angles, but fre- 

 quently following along the strike of the softer and more steeply up- 

 turned Mesozoic beds. The drainage of nearly the whole southern slope 

 finds its way into the Duchesne river, a branch of Green river. The 

 eastern end of the uplift is drained by small streams flowing directly into 

 Green river. 



NORTHERN SLOPE 



This region differs materially from the southern slope. The "Uinta" 

 sandstones or quartzites and the overlying formations, for a considerable 

 portion of the area, are buried beneath morainal ridges supporting a 

 thick forest covering or beneath the overlap of Tertiary sediments. The 

 glacial cirques and amphitheaters are relatively small and the streams 

 heading in them have cut canyons 2,000 feet deep within 5 to 6 miles of 

 the crest of the range. These streams flow north and east into Green 



