INDEX

Alamosa Creek, section on, 74 Dalton (Cont'd.) discussed, 69 lower part (Cont'd.) valley of, described, 62 depositional conditions, 17 Allison barren member of Mesaverde, 11 upper part, 14 Apishapa formation, 20 depositional conditions, 18 Arizona, sections in, 89 Datil formation, 64 Atarque, section near, 60 D-Cross Mountain, section at, 74 discussed, 36 discussed, 69 Atarque member of Mesaverde, 11,13 Deer Creek, section at, 91 age of, 35 Depositional conditions, 15 defined, 35 Detritus, rate of accumulation, 16, 17 Dilco coal member of Mesaverde, 5, 11, 14 Bartlett barren member of Mesaverde, 11 in McCarty-Alamosa Creek area, 66 Bell Mountain sandstone, 67, 71 north of Chuska Mountains, 28 Bennett Peak, section west of, 51 south of Chuska Mountains, 30 Benton group, subdivisions, 20 Dilco-lower Gibson zone, 67, 70 Black Mesa, section at, 89 Durango, section near, 83 Cabezon, section at, 82 Environmental conditions, 15 Carlile shale, 20 Epicontinental seas, oscillating strandline in, 15 fauna of, 20, 22 Equilibrium, profile of, 17, 19 Carthage, section at, 87 Casa Salazar, section at, 81 Faunal zones, 21 Cebolleta Mesa, section near north end of, 72 at Point Lookout, 26 discussed, 67 in McCarty-Alamosa Creek area, 66 section near south end of, 73 on San Juan River, 27 Cerrillos, section at, 85 Ferron sandstone, 23 Chaco River, section on, 48 "Gallego" sandstone, 67, 70 "Chamiso" formation, 67, 71 Gallina, section at, 82 Chamiso member of Mesaverde, 67, 71 Gallup, section near, 5, 78 Chinle formation, 7, 64 Gallup coal basin, Mesaverde in, 11 Chuska Mountains, section southwest of, 52 Gallup-Dilco regression, 95 correlated with section in southern San Juan Gallup sandstone member of Mesaverde, 5 Basin, 31 age of, 27, 28, 34 discussed, 30 defined, 11 Cliff House sandstone, 10, 15 depositional conditions, 18 Clifton, section at, 91 lower part of, 11, 13, 34,35 Colorado, sections in southwestern, 83 in McCarty-Alamosa Creek area, 65, 67 Colorado group, 20 near Manuelito, 34 Colorado-Montana faunal boundary, relation in McCarty-Alamosa Creek area, 67 to Mancos-Mesaverde contact, 23, 24 north of Chuska Mountains, 27, 28 Dakota(?) sandstone, age of, 8 south of Chuska Mountains, 30 basal contact, 7 tongues at base of, 29, 34, 65 coal in, 8 upper part of, 11, 14, 34 conditions of deposition, 92 in McCarty-Alamosa Creek area, 67 described, 7 Gibson coal member of Mesaverde, 5, 11 in McCarty-Alamosa Creek area, 65 lower part of, 6 petrified wood in, 8 depositional conditions, 16 Dalton sandstone member of Mesaverde, 5,14 upper part of, 6 lower part, 14, 29 in McCarty-Alamosa Creek area, 67

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Graneros shale, 20 Mancos-Mesaverde contact (Cont'd.) fauna of, 20, 21 relation to Colorado-Montana faunal bound- Greenhorn formation, 20 ary, 23, 24 fauna of, 20, 21 Manuelito, section near, 55 discussed, 34 Hogback Mountain, Mesaverde-Lewis contact McCarty-Alamosa Creek area, defined, 62 at, 12 "McElmo" formation, 7 section at, 48 Menefee formation, 10, 14 Homogenetic equivalence of Point Lookout Mesa Verde-Atarque area, defined, 2 sandstone and upper part of Hosta Mesaverde formation, age of, 25, 37 sandstone member of Mesaverde, 33,36 described, 11 Horsehead Creek, section on, 60 in McCarty-Alamosa Creek area, 66 Horsehead tongue of Mancos shale, 9, 11, 13 age of, 67 age of, 35 Mesa Verde group, 9 defined, 35 thickness of, 11 Hosta sandstone member of Mesaverde, 6, 14 Mesa Verde National Park, log of water well, 44 lower part, 6, 14 Mesaverde regression, 96 south of Chuska Mountains, 31 "Miguel" formation, 66, 71 upper part, 6, 14 Mitchell's section at, 56 depositional conditions, 18 Montana group, 20 homogenetically equivalent to Point Look- Morrison formation, 7, 64 out sandstone, 33, 36 Mulatto tongue of Mancos shale, 6, 9, 14 in McCarty-Alamosa Creek area, 67, 70 depositional conditions, 17 in McCarty-Alamosa Creek area, 66 Inner mud line, 77 Mulatto transgression, 95 Intertonguing, causes of, 15 Lee quoted, 4 Navajo Indian Reservation, section at southern border of, 54 of Lewis shale and Cliff House sandstone, 12 correlated with section near Gallup, 32 of Mancos and Mesaverde, 13 discussed, 32 "Navajo" sandstone, 7, 64 Las Vegas, section at, 86 Navajo Springs, Mesaverde-Lewis contact at, 12 Late Carlile zone, 23, 26, 27, 29 Neritic line, 77 fauna of, 22 New Mexico, sections in eastern and southern, 83 Lewis shale, 11, 14 Niobrara formation, fauna of, 23 at Navajo Springs, 12 Niobrara group, subdivisions, 20 Lewis transgression, 97 Nutria Creek, section near, 57 Lower Gallup regression, 95 Lower Gibson regression, 95 Out-building of shore, 17

Mancos shale, age of, 23 Pagosa Springs, section at, 83 near Atarque, 35 Pescado Creek, section on, 58 described, 9 Pescado tongue of Mancos shale, 9, 11, 13 lower part, north of Chuska Mountains, 27, 30 age of, 34 in McCarty-Alamosa Creek area, 65 defined, 34 age of, 65 depositional conditions, 17 thickness of, 9 in McCarty-Alamosa Creek area, 65, 67 tongues of, 9 Pescado transgression, 95 upper part, north of Chuska Mountains, 27,30 Petrified wood, in Dakota(?), 8 Mancos-Mesaverde contact, age of, 24, 25, 28, Pictured Cliffs sandstone, 12,15 34,36 Pinedale, section at, 91 near Gallup, 11 Point Lookout, section at, 42 intertonguing relationship, 13 discussed, 25

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Point Lookout sandstone, 14 Shoreline (Cont'd.) age of, 24 stable, 16 depositional conditions, 18 transgressive, 17 described, 10 "Stray" sandstone, 14, 28 homogenetically equivalent to upper part of depositional conditions, 17 Hosta sandstone member of Mesaverde, in McCarty-Alamosa Creek area, 66 33, 36 Subsidence, rate of, 16, 17 stratigraphie rise northward, 18, 24, 37 Profile of equilibrium, 17, 19 Telegraph Creek formation, fauna of, 23 "Punta de la Mesa" sandstone, 80 Three-dimensional correlation diagram, 77 Tijeras, section at, 83 Timpas formation, 20 Raton, section at, 86 fauna of, 20 Redrock Wash, section on, 45 Toadlena, section near, 52 Regression, and profile of equilibrium, 19 "Tocito lentil of Mancos", 11, 29 in sinking basin, 15 Transition zones, evidence of conformable Rio Puerco, section on, 79 deposition, 18 origin of, 17 San Andres Mountains, section in, 88 Très Hermanos sandstones, 32, 36, 65 San Juan Basin, eastern and southeastern parts probable tongues of Dakota (?), 93 of, 79 Two Wells, section near, 56 San Juan River, section adjacent to, 45, 48 Twowells sandstone lentil of Mancos, 22, 34 discussed, 27 age of, 36 Santa Rita, section near, 88 defined, 35 Satan tongue of Mancos shale, 6, 9, 14 Unconformities in Mesaverde, lack of, 19 in McCarty-Alamosa Creek area, 67, 70 Upper Cretaceous sea, maximum extent, 93 Satan transgression, 96 Sequence of strata, 76 White Mountains, section at, 87 Shore line, causes of oscillations of, 15 regressive, 17 Zuni Mountain uplift, 64 in sinking basin, 15 "Zuni" sandstones, 7

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