698 



SUBJECT INDEX 



Preconsolidation, 105, 108, 145, 198 

 Preconstruction shafts, 162 

 Prescott, Ariz., 420 

 Pressure, 16 



intergranular, 97 



overburden, 198 



testing, 150 

 Priceite, 491 

 Primary replacements with ore minerals, 



524 

 Probability curve, 605 

 Processes, of gullying, 416 



of sedimentation, 227-436 

 relation of, to aggregates, 440 



of soil formation, 52 

 Processing of sedimentary minerals, 500 

 Proctor test, 101 

 Production, of foundry sand, 482 



of minerals, 488 



of oil, 579-615 

 by gas drive, 581 

 decline curve of, 582 

 rates of, 580 

 Production statistics of sedimentary ore 



minerals, 486-492 

 Products of sedimentation, 208 

 Profile of equilibrium in sea, 23 

 Properties, of clays, 464-474 



of concrete aggregate, 437-463 



of foundry sands, 475-482 



of soil, 41-61, 96 

 Prospecting, for ores, 492-496, 537 



for petroleum, 77 



geochemical, 537-555 

 Provenance studies, 76 

 Pryors Island Reach, 301 

 Puerto Rico, 123 

 Pulpstones, 490 

 Pumicite, 454, 490 

 Pumping in highway subgrades, 143 

 Pumping tests to locate water level, 



173 

 Purdue Conference on Soil Mechanics, 



111 

 Purgatoire River, Colo., 382 

 Pycrete, 265 

 Pyrite, 235, 464, 491, 509, 513, 515, 529, 



572 

 Pyritic replacements, 529, 535 

 Pyroxenes, 55 

 Pyrrhotite, 515 



Q 



Quality of water, 266 



in permafrost area, 255 

 Quantities of debris from erosion, 338, 



382 

 Quarried rock as aggregate, 437, 456 

 Quartz, 33, 464, 475, 489 

 Quartz schist, 189 

 Quartzite, 160, 444, 457, 486, 638 

 Quaternary, 99, 481 

 Quebec, 512 

 Quick-setting cements in stabilizing 



roads, 653 

 Quicksand, 98, 118, 143 

 Quick shear, 173 



R 



Raccoon River, Iowa, 382 

 Radio, Walkie-Talkie, 356 

 Radioactive bombardment of hydro- 

 carbons, 611 

 Radioactive rocks and fluids, 85 

 Radioactive sediments, 15, 81 

 Radioactivity, relation of, to geophysics, 



79 

 Radioactivity logs, 565-566 

 Radium, 565 



Ragged Mountain, Colo., 451 

 Railroad ballast, 489, 490 

 Railroad in permafrost areas, 257, 261 

 Rainfall, 21, 48, 260, 408 



effect of, on residual deposits, 525 

 on soil, 48, 395 



intensity of, 400 



records of, in arid areas, 420 

 Ramann's definition of soil, 41 

 Range management, 432 

 Range surveys, 352 

 Rangely Reservoir, Colo., 599 

 Rangoon, Burma, 317 

 Raritan formation, 482 

 Rate, of change in soil, 10, 17, 45 



of erosion, 413 



of flow, 63 



of glacier movement, 13 



of gullying, 416 



of ice movement, 7 



of reservoir sedimentation, 398 



of sediment production, 68, 380 



