936 
INDEX. 
Page. 
Unconformity,  beneath  the  Keweenawan  .  351-352 
beneath  the  J I  uronian. .  80. 353-35G,  384-386, 437 
between  Torridonian  and  Lewisian 48-49 
value  of,  in  classification 85 
within  the  Iluronian..  352-353,356,382-386,437 
Ungava  Bay,  rocks  near 539, 540 
Uniacke,  rocks  near 506 
Union,  rocks  near 688 
United    States    Geological    Survey,    use    of 
"Archean"  by 26 
subdivision  scheme  of 19-20 
Unkar  group,  character  and  distribution  of. .     774- 
77:.,  77S 
correlation  of 778 
fossils  in 778 
Upham,  rocks  near 495 
Upham,  Warren,  on  Minnesota  rocks 200 
on  Minnesota  Valley  rocks 1 98, 393 
on  Sioux  quartzite 725.  750 
Upham,  Warren,  and  Winchell,  N.  II.,  on 
Minnesota  counties 201 
Upper  Huronian.    See  Huronian. 
Upper  Laurentian.  definition  of 87 
Upper  Marquette  series,  subdivision  of 156 
Upper  Peninsula,  rocks  of 108-110 
Upper  slate,  character  and  distribution  of —    1 42- 
143.144 
Utah,  correlation  in 46 
pre-Cambrian  rocks  of 46,  779-791 
literature  of 779-789 
unconformity  in 39 
Ute  Creek,  rocks  on 808 
Utica  rocks,  correlation  of 565 
Utley,  rocks  near 722-723 
Uvas,  Canada  de  las.  rocks  on 869, 870 
V. 
Vallecito  conglomerate,  character  and  distri- 
bution of 823, 831 
Vallecito  Creek,  rocks  on 830, 831 
Van  llise,  C.  R.,  field  work  of 14 
nomenclature  by 377-378 
on  Animas  Canyon  rocks 820-821 
on  Baraboo  rocks 718,  750 
on  base-levels  of  Wisconsin  and  Kewee- 
naw Point 154,390 
on  Black  Hills  rocks 730-731, 751 
on  Blue  Mountains 807-808, 894 
on  Crystal  Falls  district 163, 390 
on  geologic  mapping 321, 402 
on  Grand  Canyon  rocks 774-775, 892 
on  Huronian  unconformity 315-316,402 
on  Huronian  volcanics 146, 389 
on  Iron  Mountain  succession 138 
on  Lake  of  Woods  and  Rainy  Lake 284, 399 
on  Lake  Superior  iron  districts 320-321,402 
on  Lake  Superior  region.  317-318,372.374,383,402 
on  Marquette  region 150, 152, 389 
on  metamorphism 102, 107 
on  New  England  geology 587-589, 596 
on  Penokee-Gogebic  ores 315, 402 
on  pre-Cambrian  rocks 95, 96, 104, 106, 107 
on  rock  flowage 31 
on  southeast  New  York  rocks 631-632, 651 
on  Uinta  Mountains  rocks 781, 893 
on  Vermilion  sediments 382 
on  Wasatch  Mountains  rocks 787-788, 893 
Page. 
Van  Hise,  C.  R.,  on  Wyoming  rocks. . .  837-838, 893 
work  of 330 
Van  Hise,  C.  R.,  and  Bayley,  W.  S.,  on  Mar- 
quette district 155-161, 390 
on  Menominee  district 169-172, 174, 390, 391 
Van  Hise,  C.  R.,  and  Clements,  J.  M.,  on  Min- 
ncsota.coast 242, 396 
on  Ontario  coast 287-289, 400 
Van  Hise,  C.  R.,  and  Irving,  R.  D.,  on  Hu- 
ronian rocks 308, 401 
on  Penokce  series 140-144, 389 
on  Wisconsin  Valley 190, 392 
Van  Hise,  C.  R.,  and  Leith,  C.  K.,  on  Colo- 
rado rocks 814, 817-818, 895 
on  Lake  Huron  rocks 425-426, 437, 446 
Van  Hise,  C.  R.,  and  Pumpelly,  R.,  on  Lake 
Huron  rocks 413, 415, 438, 445 
on  Menominee  rocks  and  Felch  Mountain 
ores  146, 389 
on  Missouri  rocks 736-737, 752 
Van  Hise,  C.  R.,  and  Seaman,  A.  E.,  on  Ona- 
ping  contact 424-425, 446 
Van  Hise,  C.  R.,  and  Williams,  G.  II.,  on  Adi- 
rondacks  rocks 601-602 
Van  Hise  and  others,  on  Adirondacks  corre- 
lation    617-619, 650 
on  Lake  Superior  correlation 173- 
174, 251, 293, 294-295, 320, 390-391 
on  nomenclature 324-327 
Van  Hise,  C.  R.,  Leith,  C.  K.,  and  others,  on 
Lake  Temagami-Onaping  River 
region 428-429, 446 
Van  Hise,  C.  R.,  Pumpelly,  R.,  and  Walcott, 
C.  D.,  on  Adirondacks  rocks.  600-601,648 
Vanuxem,  L.,  on  Adirondack  geology 598, 
599, 647 
Vanuxem,  L.,  and  Keating,  W.  H.,  on  Frank- 
lin geology 635, 651 
Vennor,  II.  G.,  on  Azoic  of  Canada 455,482 
on  Hastings  County  rocks 453-454, 481 
on  Hastings  series 454, 481 
on  Leeds,  Frontenac,  and  Lanark  County 
rocks 454-455, 481, 482 
on  Renfrew,  Pontiac,  and  Ottawa  coun- 
ties   455-457, 482 
Vera  Cruz,  rocks  near 764 
Verde  River,  rocks  at 772 
Vermejo  Mountains,  rocks  of 769 
Vermilion  Bay,  rocks  near 288-289 
Vermilion  district,  iron  of 201, 247-248, 252 
Vermilion  district,  rocks  of 200-201, 
246-249, 251 , 252, 320-321,  325, 
328,  333-334,  339-340,355,383 
Vermilion  Lake,  rocks  near 196, 
197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 
231, 232, 236, 237, 248, 301, 306,  310, 313, 316 
Vermilion  Lake  granite,  character  and  distri- 
bution of 206, 
210, 211 ,  214, 221, 273, 316, 334 
Vermilion  Lake  granite,  correlation  of 207, 
314,317,382 
definition  of 203 
relations  of 373 
Vermilion  range,  iron  ores  of 210, 
228-229, 230, 236, 250 
rocks  of 229-230 
