INDEX. 



887 



Page. 



Portage formation 291,293,297,306,307 



Port Austin sandstone 422 



Port Clarence limestone 222, 265 



Porters Creek clay 732-733 



P6rt E wen beds 295, 297, 299 



Port Hudson formation 806 



Portland group 137, 138, 553-554 



Porto fiico (E-19), authorities on 348, 801, 803 



geology of 13,342,348,794,801-803 



See also West Indies. 



Porus formation 800 



Post-Cambrian intrusive rocks. See Intrusive rocks (post-Cam- 

 brian). 



Potapaco clay 746-747 



Poteau group 458 



Potem formation 561 



Potomac group 11, 579, 610 



Potomac marble 524 



Potosl group 104 



Potsdam sandstone. 118-119, 120-124, 130, 145, 149-153, 184, 186, 196, 200-201 



Pottawatomie formation 458 



Pottsville formation 12, 



404, 413, 420, 430^33, 439-442, 444-452, 458, 466-468 



Powell, J. W., acknowledgments to 49, 56, 57, 59, 60 



cited 658, 660 



publication by 857 



Poxino Island shale 238, 241 



Prairie du Chlen group 118, 120, 180 



Pratt, J. H., acknowledgments to 49, 58 



Pratt coal 454 



Pre-Cambriaa system, areas of, hst of 62,64-66 



areas of, map showing 63 



authoritieson 62 



classification of 68 



conference on 63-70 



See also Late Pre-Cambrian; EarUer Pre-Cambrian; Undiffer- 

 entiated pre-Cambrian; Intrusive rocks (pre-Cam- 

 brian); Pre-Cambrian (?) gneisses, schists, and meta- 

 morphosed sediments. 

 Pre-Cambrian ( ?) gneisses, schists, and metamorphosed sediments, 



classification of. 67 



content of 15 



distribution of. 16, 64 



representation of, on map 15, 16 



Price sandstone 287 



Prince Edward Island, geology of ; - ■ - 12, 498-499 



Prince William Sound, authorities on 61 



pubUcations on 41, 42, 50, 52 



Prindle, L. M., acknowledgments to 49, 61 



cited 703, 790-791 



publications by, list of 857 



Prindle, L. M., and Brooks, A. H., cited '. 221 



Prindle, L. M., and Hess, P. L., cited 703 



publication by 867 



Prospect formation 145 



Prospect Mountain formation 107 



Prosser, C. S., acknowledgments to 49, 57 



cited 23,3-234, 239, 246, 274-275, 312-313, 316, 414, 486-487 



pubUcations by 187,240,286,857 



Prosser, C. S., and Cumings, E. R., pubUcation by 857 



Proterozoic rocks, subdivision of 67 



Providence sand 655, 657 



Puebla (E-F 14), authorities on 5i9, 551 



geology of 549, 551, 690 



See also Mexico. 



Puente formation 818 



Puerco formation 10,661,706,756-758,778 



Puget group 10,706,778-780 



Puget Sound, geology at 10, 778-780 



Pugh, G, T., pubUcation by 857 



Pugh formation 444 



Pulasld formation 180,779 



PulUam formation 641 



Pumpelly , Raphael, acknowledgments to 49, 58 



cited 194 



pubUcation by 857 



Purdue, A, H., acknowledgments to 49, 56 



cited 160-164, 458, 459 



pubUcation by 867 



Page. 



Purdue, A. H., and Adams, G. I., publication by 857 



Purisima formation 753, 815, 818 



Purslane sandstone 418, 419 



Put-in-Bay dolomite 247, 248 



Q. 



Quadrant formation 381-382, 386, 387, 621 



Quartermaster formation. . '. 478, 487, 489 



Quaternary system, content of 9 



distribution of 9 



representation of, on map 9 



Quebec (M-N 17-21), authorities on 60-61, 250, 423 



geology of 14, 16, 62, 64, 65, 130-134, 225, 250, 269, 325, 401, 423-424 



publications on 30-33, 36, 38-39, 42-49, 61, 53-66 



Quebec group 131- 



132, 148, 153, 192, 202, 204, 206, 254-255 



Queen Charlotte formation 11, 542, 579,62S-629, 630 



Queen Charlotte Island, authorities on 350, 361, 639, 541, 628, 630 



geology of 342, 350-351, 500, 537, 539-542, 679, 628-630, 796, 834 



See also Arctic coast of Canada. 



Queen City formation 726 



Queretaro, geology of 690 



Quiimimont shale 445, 446 



Quitman Mountains, geology of 579, 594-695 



Quotations, use of 5 



R. 



Raisin River dolomite 247, 248 



Raleigh sandstone 445, 446, 449-460 



Ralston group 461, 464-465 



Rampart group 338 



Rancocas group 609-612 



Random formation 14, 16, 142 



Ransome, F. L., acknowledgments to 49,66,57 



cited 72,74-75,271,592-593,820 



publications by, list of 857 



Ransome, F. L., and Turner, H. W., cited 555 



publication by gel 



Raritan formation 11, 609-610, 611-613, 637, 682, 684 



Rattlesnake formation 829 



Raymond, P. E., cited 188, 320, 323-324, 437 



pubUcations by, Ust of 857 



Reagan, A, B., acknowledgments to 49,59 



cited 81,228,272-273,361,673 



publications by, Ust of 858 



Reagan sandstone 82-84 



Redbank sand. . ., 609 



Red Beds 12, 363, 369, 481-482, 490-492,616-517, 679 



Red Bluff formation 487,739 



Red Lion formation 129-130 



Red Lodge field, Mont,, geology of 776-777 



Redstone limestone, etc 439 



RedwaU limestone 284,357,361,366-367 



ReUef quartzite 354 



Kenfroes marl 557 



Reynosa formation 548 



Rhode Island (K-19), authorities on , 59 459 



geology of 64, 425, 469-472 



publications on 32, 34, 39, 40, 51, 52, 66 



See also Atlantic coast; New England. 



Rhode Island Coal Measures 469 



Richards, R. W., acknowledgments to 49 58, 69 60 



pubUcations by 77(3 353 



Richards, R. W., and Gale, H. S., pubUcation by 849 



Richardson, G. B., acknowledgments to 49 66,58 59,61 



cited 75-77, 158, 228, 358-360, 363, 474-475, 597-598 



publications by 592 868 



Richardson, James, acknowledgments to 49-50 60 



pubUcation by ggg 



Richmond Basin, Va., geology of 500, 518-519 



Richmond formation ^3 



166-168, 172, 191, 195, 196, 217, 228-229, 640, 642, 717-718 



Richmond group 166-168,195 



Richmond-Maquoketa group ^7^ 



Rico formation 072 



Ridley limestone jgg 



Ries, Heinrich, cited ^gr, 



pubUcations by 238 868 



Riga schist ' jg^ 



