SUBJECT INDEX 



693 



Logarithmic probability paper, use of, in 

 permeability studies, 605 



Logs of wells, 152, 559-578 



London, England, 294, 296, 660 



Long Island, N. Y., 280 



Longshore currents, 11, 19, 22, 25 



Lordsburg, N. M., 420 



Los Angeles, Calif., 170, 333, 336, 392, 

 420 



Loss of water in dams, 188 



Lossius deposits, Norway, 540 



Louisiana, 211, 382, 583 



Louisville, Ky., 121 



Lowe Sound, 250 



Lowering of base level, 408 



LVT craft, 268 



Lumpkin, Ga., 384 



Lunga Point, Guadalcanal, 650 



M 



McClosky formation, 617 



Madison, Wise, 113, 122, 506 



Maginot Line, 652 



Magmatic processes, 537 



Magnesite, 491, 492 



Magnesium, 235, 266, 464 



Magnesium sulphate, 458, 509 



Magnesium sulphide, 510 



Magnet Cove, Ark., 530 



Magnetic field of earth, 80 



Magnetic minerals in sediments, 80, 85, 



572 

 Magnetic susceptibility, relation of, to 



geophysics, 79 

 Magnetism, terrestrial, 89 

 Magnetite, 80, 84, 475, 488, 512, 572 

 Magnetometer, 80, 82, 84 

 Mahoning Dam, 160 

 Mainz, Germany, 292 

 Mammals, relation of, to permafrost, 257 

 Man as agent of erosion, 8, 381 

 Mancos River, 417 

 Mancos shale, 233 

 Manganese, 17, 21, 266, 491, 524 

 Manganese oxide, 448, 542 

 Mangus River, 411 

 Manitoba, 528 

 Manto deposits, 529 



Mapping, geologic, geophysical aids to, 83 

 Marble, 486 



Marcasite, 509, 525 



Mare Island, Calif., 294 



Marianas Islands, 642 



Marine deposits, 10-12, 131, 207, 455 



ground water in, 122 

 Marine iron, 515 

 Marine limestones, 122 

 Marine Physical Laboratory, 660 

 Marine Pool, 111., 560 

 Mariposa Dam, Calif., 189 

 Marl, 233, 236, 491, 638, 640 

 Marquette Range, Mich., 514 

 Maryland, 382 

 Materials testing, 153 

 Mature soils, 45 

 Meadowland soils, 644 

 Meandering, 214, 222, 292, 321, 394, 395 



in gullies, 430 

 Measuring sediment in reservoirs, 351 

 Mechanical analysis, 99, 645 

 Mechanical deposits, 8-15, 131 



iron, 508, 512 

 Mechanical erosion, 4, 5 

 Mechanics of soil behavior, 93-112 

 Median diameter, 32; see also D^ 

 Mediterranean Sea, 108 

 Medium-grained sedimentary rocks, as 



foundations, 161 

 Meinzer's coefficient, 115 

 Melnikovite, 509 

 Memphis, Tenn., 326 

 Menominee Range, Mich., 514 

 Merced River, Calif., 382 

 Mercury, 488 



Merritt Parkway, Conn., 142 

 Mesa Verde National Park, 233 

 Mesabi Range, Minn., 514 

 Mesozoic, 134 

 Metaandesites, 444 

 Metabolic process of organisms, effect 



of, on sedimentation, 31 

 Metaline Falls, Wash., lead-zinc, 529 

 Metamorphism, 29, 114, 485, 527 

 Metasomatic replacement, 534 

 Meteoric water, 604, 619 

 Meteorology, 76, 88, 91 

 Methane determination, 567 

 Methods, of combating slides, 241 



of determining safe load, 149 



of geophysics, 72, 92 



of soft-ground tunneling, 200 



