VIII ILLUSTRATIONS. 



Page. 



FigubeSI. Anticline and syncline 121 



32. Sketch section across tlie syncline at Wolcott on a line from 



east to west 124 



33. Canyon cut by Eagle River through west rim of the syncline, 



as seen from Wolcott 127 



34. Section across canyon of Colorado River at Shoshone 135 



35. Top of red sandstone (Triassic) forming crest of hill below 



South Canon Coal Co.'s coal tipple 139 



36. Section through Grand Hogback at Newcastle 140 



37. Section across Uinta Basin from Newcastle to Palisade 148 



38. Relation of oil, gas, and water to an anticline 150 



39. Map of High Line reclamation project 153 



40. Formation of a rock terrace 159 



41. Formation of a gravel terrace 160 



42. Alluvial fans in Poneha Canyon 161 



43. Overturned eastern rim of the syncline at Crookton 167 



44. Section through Tomichi Dome, showing the great mass of 



crystalline rock that has forced its way upward, while in 

 a molten condition, through the older granite and sedi- 

 mentary rocks 168 



45. Section showing the effect of hard and soft rocks on the form 



of a canyon 170 



46. Section across Black Canyon at Cimarron 175 



47. Rocks forming the canyon wall near Bridgeport 182 



48. Sketch section across the valley at Fruita, Colo 185 



49. Method of measuring the flow of a river at a cable station__ 189 



50. Short fold in massive sandstone opposite Ruby siding, below 



Mack 192 



51. Different types of anticlines 192 



52. Angular profiles of the Plateau province 198 



53. Mountains carved from a laccolith 199 



54. Projecting point of the lower salients of the Book Cliffs 200 



55. Profile of front of Beckwith Plateau 209 



56. Terraces at head of Grassy Creek valley 211 



57. Geologic section at Castlegate 215 



58. Sketch section at Gilluly, showing relation of the northward- 



dipping red Wasatch to the white Green River formation 221 



59. Map of Strawberry Valley reclamation project 225 



60. Map of Lake Bonneville 228 



61. Provo and Bonneville lake terraces at the Narrows of Jordan 



Valley 235 



62. Fluctuation in level of Great Salt Lake from 1850 to 1914___ 245 



63. Map showing old trails for Oregon and California 249 



