Report on the Geology of the High Plateaus of Utah, with Atlas

Page 304_Index

304 INDEX. Page. Monroe Amphitheater...................................................................... 56,227 Moraine Valley............................................................................ 267 Musinia.................................................................................... 169 Navajo Mountain........................................................................... 290 Nebo, Mount............................................................................... 2,260 Nephelin.................................................................................... 89 Nephelin-basalt, classification of............................................................. Ill Nephelin-dolerite, classification of.......................................................... Ill Nevadito. (See Ehyolite.) Obsidian................................................................................... 103,107 Olivin.................................................................................... 89 Order of eruptions........................................................................62,131-137 Orographic forms........................................-................................... 51,54 Palaeozoic formations....................................................................... 143 Panquitch Cailon........................................................................... 212 Hayfield.,............................................................................. 238,295 Lake .................................................................................. 199 Valley................................................................................. 212 PanaValiey................................................................................ 252,297 Paria fold (see Echo Cliffs' monocline)....................................................... 44 Paunsdgunt Plateau........................................................................ 3,251 P^vant...................................................................................3,169,170 Park Mountains............................................................................ 48 Park Province............................................................................. 3 Parallelism of faults...................................................................... 27 to ancient shore line.................................................................... 45 Permian or Permo-Carboniferous (see Shin&rump)............................................ 146 Phonolite, classification of.................................................................. 107 of East Fork Canon.................................................................... 248 Pink Cliffs..........................................................................159,204,211,253 Plasticity of the earth...................................................................... 20 Plateau Province........................................................................... 5,8,49 Plateau scenery.......................................................................8,208,252,286 Plication................................................................................... 46 Pliocene erosion............................................................................ 21,40 Faulting............................................................................... 28,34 Porphyritic granite......................................................................... 119 Texture......................................-......................................... 92 Trachytes............................................................................. 94 Potash in volcanic rocks.................................................................. 89,117,123 Potato Valley.............................................................................. 289,291 Powell, J. W....................................................................5,19,27,143,158,290 Pre-Tertiary flexures....................................................................... 43 Primordial magma..................................................................-...... 114,124 Propylite, augitic, classification of.......................................................... 109 Classification of........................................................................ 102,108 Earliest eruptions of.................................................................... 39,57 Hornblendic, classification of........................................................... 108 Awapa Plateau..................................................................... 275 Monroe Amphitheater........'...................................................... 229,242 Sevier Plateau..................................................................229,237,242 Order of sequence.....................................................................63,67,138 Quartz................................................................................. 69,109 Pumice..........-..............................................-.......................... 103 Quartz propylite........................................................................... 69,109