954 



SUBJECT INDEX 



Marianas Trench, 416 ff, 419 



Markhams Hole, 284 



Marquesas Islands, 267, 336, 366 ff 



Marquis-Necker Rise, 276, 382 



Mars, colors of, 863 



Marshall archipelago, 336, 374 ff, 377 ff, 



381 ff, 385 

 Marshes, 635 ff 

 Martite, 677 

 Mauritius, 164 

 May, Cape, 294 

 Mead Reservoir, Lake, 742 

 Mediterranean Sea, 238, 252 ff, 281, 313, 

 328 ff, 488 ff, 583 ff, 625, 641, 648, 

 747, 911 ff 

 Medjerda delta, 630 ff 

 Melanesia, 245, 413 

 Menapian strata, 893 

 Mendocino escarpment, fault, ridge, 168, 



192, 195 ff, 201 ff, 265, 322 ff 

 Mercenaria, 595 

 Meriadzek terrace, 286 

 Meseta, 288 



Mesozoic sediments, 277 

 Messina Strait, 61, 253, 329 

 Metal phosphates, 602 

 Metal sulphides, 609 

 Meteor Expedition, 233, 264, 393, 728 

 Meteorites, 674 

 Mexico City, 899 



Mexico, Gulf of, 107, 205, 248, 293, 296, 313, 

 328, 329 ff, 465, 583, 620, 649, 728, 812, 

 838 ff, 880, 911 

 Mexico volcanic province, 422 

 Mica, 669, 698 

 Microcline, 696 



Micropaleontological techniques : see Cross- 

 correlation 

 Microtopography, 437 [see also Underwater 

 photography) 



bedrock outcrops, 439 ff, 455 



benthic fauna, 457, 459 ff 



boulders and cobbles, 443 ff 



classification of features, 439 ff 



continental slopes, 469 



current activity, 451 ff 



current ridges, 456 



deformation of ocean floor, 718 



depositional drifts, 457 



description by physiographic I'egions, 

 467 ff 



lava flows, 439 ff, 889 



mid-oceanic ridges, 469 



muds and oozes, 451 



Microtopography — continued 



ocean basins, 469 



pebbles and granules, 447 ff 



ripple marks, 451 ff, 454 



sand, 348, 449 ff 



scour pits, 457 



seamoimts, 443 ff, 459, 470 



sediment-water interface disturbed by 

 benthos, 460 ff, 465 



submarine canyons, 469 



summary of features, 468 



surface geology, 439 ff 



Mid-Atlantic Ridge, 189, 209 ff, 227, 230, 



234, 256, 270 ff, 273, 276, 356 ff, 367, 



391, 399 ff, 444 ff, 447, 462 ff, 755, 761 



Middle America Trench, 334, 411 ff', 419, 



422 ff 

 Midian Islands, 303 

 Mid-ocean canyons, 752 

 Mid-oceanic plateaus, 276 ff 

 Mid-Oceanic Ridge, The, 206 ff, 235, 270 ff, 

 274, 388 



Arctic Basm, 401 ff 



crest provinces of North Atlantic, 388 



crustal structure, 404 ff 



flank provinces of North Atlantic, 391 



Iceland, 399 ff 



Indian Ocean, 273, 388 ff, 391, 394 ff, 405 



microtopography, 469 



Mid-Indian Ocean Ridge, 397 



North Atlantic {see also Mid-Atlantic 

 Ridge above), 388 ff, 398, 405 



Norwegian Sea, 399 ff 



origin, 408 



rift valleys, 395 ff, 407 



seismicity, 391 ff, 402 ff 



South Atlantic {see also Mid-Atlantic 

 Ridge above), 388, 392, 393 ff, 405 



South Pacific, 388 ff, 395 ff, 398, 404 

 Mid-oceanic rift, 271 ff, 274, 393, 399, 766 

 "Mid-Pacific" Expedition, 97, 372 

 Mid-Pacific Mountains, 276, 336, 370, 381 ff 

 Milankovitch mechanism, 919 

 Milford Sound, 607, 610 

 Minch, 285 



Mindel glacial strata, 893 

 Mineralization by bacteria, 599 

 Miocene radiolarian assemblages, 880 ff 

 Misaine Bank, 295 



Mississippi, 248, 249, 287, 296, 328 ff, 493 ff, 

 500, 610, 620, 625, 628 ff, 639, 642, 

 649, 754, 892, 902, 918 

 Model experiments 



beach and nearshore processes, 529, 535 



