CONTENTS. XXix 



CHAPTER XI. 



Page. 

 Sevier and Paunsagunt Plateaus 225 



Genera] structure and form of the Sevier Plateau. — Monroe Amphitheater. — Eastern side of the 

 Plateau and Blue Mountain. — Northern lava floods. — The central portions of the plateau and 

 their eruptive masses. — Volcanic conglomerates. — Southern eruptive center of the plateau. — 

 East Fork Cauon. — Its tufas. — Their metamorphism. — Grass Valley, its structure and ori- 

 gin. — Alluvial cones and tufas of Grass Valley. — The Paunsagunt. — Lower Eocene beds. — 

 The southern terraces. — Scenery of Paria Amphitheater and Pink Cliffs. — Basaltic cones. 

 225-255. 



CHAPTER XII. 



The Fish Lake Plateau. — The Awapa. — Thousand Lake Mountain 257 



Southern extension of- the Wasatch Monocline. — Grass Valley faults. — Summit Valley. — Fish Lake 

 Plateau and the grand gorge. — Fish Lake. — Terminal moraines. — Succession of volcanic 

 beds. — Mount Terrill and Mount Marvine. — Tertiary formations. — Origin of Summit Valley. — 

 Moraine Valley. — Mount Hilgard aud its rocks. — The Awapa Plateau. — Trachytes and con- 

 glomerates. — Ancient basalt fields. — Kabbit Valley and its alluvial beds. — Tertiary strata. — 

 Thousand Lake Mountain. — Jura and Trias. — The Red Gate. 256-283. 



CHAPTER XIII. 



The Aquarius Plateau 284 



Distant views and the approach to the Aquarius. — Its grandeur. — Panorama from its south- 

 eastern salient. — The Water Pocket Fold. — Inconsequent drainage. — The canons of the Esca- 

 lante. — The great Kaiparowits Cliff. — Circle Cliffs. — Navajo Mountain. — Potato Valley. — Pre- 

 Tertiary flexures and erosion. — Central faults of the Aquarius. — Its lava cap. — Western wall 

 of the Plateau.— Table Cliff.— Kaiparowits Peak. 284-298. 



