894 



INDEX. 



Page. 



Worcester phyllite 470-471 



Worthen, A. H., cited 170 



Wortman, J. L., cited 756, 758 



Wortman, J. L., and Mathews, W. D., cited 759 



Wrangell Mountains, geology ot 600, 643-544, 708, 790 



See also Alaska, southern; Copper River basin; Nabesna- 

 "White River region. 



Wreford limestone 461, 464, 465, 487 



"Wright, C. W., aclcnowledgnients to 56, 61 



Wright, F. E., aclcnowledgments to 56, 60, 61 



Wright, F. B. and C. W., cited 633 



publication by 865 



Wyman sandstone a 458 



Wyoming (K-L 12-13), authorities on // . . 21, 116, 117, 179, 



244, 284, 386, 387, 490, 494, 495, 5 f\ i, 666, 667, 569,606, 



607, 675-681, 684, 685, 690-691, 4, 775, 777, 821-823 



geologyol 10; ,16-117,179-180,225, 



244,269,284,320,322, 355, 386-36/, ., i, 490-492,494-495,500, 



516, 630-632,534-536, 549, 567,565-671,579,606-608, 639,675- 



681, 684-686, 690-691, 706, 761-770, 774^776, 777, 794, 821-823 



See also Yellowstone National Park; Rocky Mountains; Great 



Plains. 



Wyoming gi-oup 368,492,759 



Y. 



Yakataga, Cape, geology near 708, 788-789 



Yakima basalt 826 



Yakima Valley, geology of ^ 774 



Yakutat Bay-Alsek River region, authorities on 61 



geology of 225 , 263 



publications on 34,50,63 



Yampa sandstone 378 



Yeates, W. S., acknowledgments to 66, 57 



Yegua formation 724, 727, 728 



Yellowstone National Park, authorities on 634 



geology of .534-536. 571 



Yellville gi-oup 104 



Yeso formation 363 



Page. 



Yogo limestone „ 128 



York River beds 334-335 



Yorktowu formation 747, 745^ 749 



Young, G. A., acknowledgments to... 56,60-61 



Yucatan (F 16), authorities on 721, 798 



geology of 9,721-722,794,797-798 



See also Mexico. 

 Yukon-Porcupine region, authorities on 395, 836 



geology of 366, 395-396, 579, 635-636, 639, 703, 708, 792, 830-837 



See also Yukon-Tanana region; Mackenzie Valley; Yukon 

 Valley (upper). 



Yi . I silt 702 



Yukon-Tanana region, authorities on. 61, 266, 338, 339 



geology of 225,266,269,338-340 



publications on 34, 49, 52 



See also Yukon-Porcupine region. 

 Yukon Territory (Canada) (P-Q 7-9), authorities on 69, 336 



geology of 64, 269, .338, 342, 353, 



355,394-395,600,644-545,549,576, 679, 636-636, 639, 700-703 



publications on 36, 37, 43, 46, 53 



Yukon Valley, authorities on 61, 792 



See also Yukon Valley, middle, upper, and lower. 

 Yukon Valley (lower), geology of 679, 633-634, 639, 701-702, 708, 787 



publications on 38, 62, 787 



See also Kuskokwim Valley. 

 Yukon Valley (middle), geology of 701-703, 792, 796, 836 



See also Koyukuk River. 



Yukon Valley (upper), geology of 579, 



636-636, 639, 703, 708, 792, 798, 836-837 



See also Yukon-Porcupine; Yukon-Tanana. 



Z. 



Zacatecas (F-G 13-14), authorities on 552,690,692,048 



geology of 12,649,662-654,679,590-592,648 



See also Mexico. 



Zapotitlan slate 688 



Zuni sandstone 513 



o 



