INDEX Abstract, 1 Acknowledgments, 4 Adiantues
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INDEX Abstract, 1 attenuata, Neorthroblattina, 45 Acknowledgments, 4 attenuata, Pinus, 67 AdiantUes rockymonlanus, 40 Atwood, 74, 76, 146 Adler, 110 auriculata, Neuropteris, 46 adolescens, Cercophyllis, SO Agate Creek, 13,15, 20, 64, 69, 70,118 Baculites compressusf, 55 Agglomerate, 58 Baculites ovatus, 55 Agriochoerus sp., 66 Badger Creek, 5,13, 72 albolineata, Neorthroblattina, 45 Divide, 9, 17, 72 Algae, lime-secreting, 46 Drainage, 70, 141 Algal limestone, 41, 46, 63, 67, 68 Erosion surface, 9, 73, 76, 141, 142, 147, 148 Allantodiopsis erosa (Lesquereux) Knowlton, 59 Badger Spring, 48 Alma, 35, 39, 77 Badger Springs ranch, 46 Ammonite, 53 Baker, 48 Analcite trachydolerite and syenite: Norm and Baker Lake, 83 mode, 42 Baker Lake porphyry, 81, 83 Anchurat sp., 56 Baker Lake quartz monzonite, 81 Anchuria sp.?, 55 Bald Knob, 84 Ancyloceras jenneyi, 55 Bald Mountain, 79 Andesite, 68, 81 Balfour, 53, 57,112,113 Composition, 105 Balfour formation, 61, 102, 106, 118, 140 Andesite and trachyte: Norms, 105 Age and general relations, 62 Andesite extrusive stage, 138 Description, 61 Aneimia sp. cf. elongata (Newberry) Knowlton, Distribution, 61 57 Section measured, 62 Antero basin faults, 129 Ball, 17,19, 21, 22, 81,110, 126 Antero formation, 61, 63, 65, 67, 73, 102, 106, barabini, Inoceramus, 55 110, 118, 140, 143, 149 Barite, 47 Age and general relationships, 67 Barnes, 19,133 Description, 63 Bartlett Mountain, 8 Fossils, 66 Basin Gap, 95, 115, 126 Section in Sec. 8, T. 14S., R. 75 W., 171 Basin No. 2 triangulation station, 11, 58, 124 Section in Sec. 14, T. 10 S., R. 75 W., 170 Basin Ridge, 11, 95, 98, 99, 100, 101, 115, 117, Thickness, 65 123, 125, 126 Antero Junction, 103, 118 Basin Ridge faults, 126 Antero reservoir, 11, 17, 44, 63, 106, 110, 129, Basin Ridge syncline, 100, 115, 117, 131 140 Basin Ridge volcanics, 58, 81, 95, 97, 115, 117, Antero syncline, 118,129,130 125 Anthracoblattina triassica Scudder, 45 Rhyolite, 81, 94,100,101,115 Aplite, 23 Red and white member, 99 Appendix, 150 Stratigraphy, 97 Araucarites sp., 46 Bastin, 19 arcuata, Poroblattina, 45 Bath, 43 Arcula gastroides, 53 Bath sandstone, 43, 46 Arkansas River, 3,17, 69, 72, 80,101,138 Beaver Creek, 15, 77 Arkansas River valley, 80,144,146 Beaver Ridge, 77 Arnold, C. A., 41 Behre, 80,92,93, 99,128,136,147 Artemisia sp., 67 Betterophon, 45 Artophycus columnarius Johnson, 41 Benson, 99 asplenoides, Sphenopteris, 40 Benton formation, 51, 52, 53, 118, 119, 125, 134 Asterophyllites longifolius, 40 Age and relations, 53 Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/955389/mem33-bm.pdf by guest on 03 October 2021 180 GEOLOGY AND ORIGIN OF SOTjtH PARK, COLORADO Benton formation (Cont'd.) Chalmers quartz monzonite, 81, 84, 86, 90, 94, Fossils, 52 101 General description, 52 Chemical analysis, 86 Section, 164 Norm and mode, 85 Bentonite, 52, 55 Petrography, 85 berthoudi, Ficus, 59 Chalmers Ridge, 84 Beveled bedrock, 10 Chamberlin, R. T., 136 Bibliography, 174 Churales, 50 bijidus, Gomphostrobus, 46 Chase Creek basin faults, 129 Big Baldy Mountain, 82 cheathami, Sphenopteris, 40 Big Black Mountain, 5, 8, 94,101,102,103, 140, Cheyenne Mountain surface, 142, 147, 149 148 cheyennsis, Fasciolaria, 55 Boreas Mountain, 79 Chubb Gulch, 40, 43 Boreas Pass, 8, 80, 81, 82, 83 Chubb siltstone, 42, 43,44, 47 Bradley, 67 Section, 151 brongniarti, Scutinoblattina, 45 Church, Victor, 3 Brontotherid, 66 Cinulia (Oligoptycha) concinna Hall and Meek, Brown, G. F., 3 56 Brown, R. W., 51, 59, 67 Cipridae, 66 Buckskin Creek, 76 Cirque, 8, 79 Bufflalo Creek, 79 Cissrn hesperia Knowlton, 59 Bufflalo Peaks, 5, 6,35, 39, 40, 74, 78, 103, 105, Clarke Ranch, 95 119 Clements, 99 Bufflalo Peaks andesite, 44, 81, 103, 104, 106, Climate, 13 138 Coal, 37, 56 Age and source, 104 Coffman conglomerate, 35, 42 Petrography, 104 Cofiman Ridge, 9, 33, 70, 119 Bufflalo Springs Ranger Station, 43, 128, 132 Cole, 98 Burbank, 136 Colorado, 48 Butler, 35, 77, 128 Colorado and Southern Railroad, 10 Colorado group, 53, 54 Caenopus? sp., 66 coloradoensis, Cryptozoon, 41 Calamites kutorgae?, 46 coloradensis, Oncobyresella, 67 Catamites sp., 40, 41 coloradensis, Platanus, 59 Calcareous algae, 47 columnarius, Artophycus, 41 calcarius, Stylophucus, 41 Como, 10,11,12, 54, 55, 56, 58, 59, 82, 114,115, Callipteris cf. hymenophylloides, 46 124, 131, 146 Callipteris cf. lyratifolia, 46 Como erosion surfaces, 12, 72, 73, 74, 76, 141, Callista sp.?, 55 142, 143, 144, 147, 149 Calyptophycus verrucius Johnson, 41 Como Ridge, 82, 95 Cannon, 19 Como syncline, 114, 131 Canyon cycle, 6 Composita sp.?, 45 Capps, 73, 74, 75, 76, 78 compressus, Baculites, 55 carbonaria, Gouldina, 41 concinna, Cinulia (Oligoptycha), 56 carbonarius, Stylophucus, 41 Concretions, 54, 69 Cardium (Ethmocardium) whitei Dall, 56 Cone-in-cone, 55 Carlile sandstone, 52,53,119 congesta, Ostrea, 54 Castle Mountain, 102, 103 Continental Divide, 5, 8, 75 Celastrus (?) gaudini Lesquereux, 57 Control, horizontal, 4 Cercocarpus sp., 67 Control, vertical, 4 Cercophyllis adolescens Scudder, 45 Copper-vanadium minerals, 46 Cercophyttis delicatula Scudder, 45 Cordaianthus sp., 40 Cercophyllis justiciar Scudder, 45 Cordaicarpon sp., 40 Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/955389/mem33-bm.pdf by guest on 03 October 2021 INDEX 181 Cordaites sp., 40 Drainage changes, 141 Cornus impressa Knowlton, 59 Dredge, 78 Cover Mountain, 102 Dreikanter, 146 craterélla, Valvaia, 66 Dreyer, R. F., 3 Crawford, 83 Durango sfage, 74, 76 Creede, Colorado, 67 Crested Butte, 42 Einkanter, 146 Cretaceous, 51, 53, 56 El Portal drift and stage, 74, 76 Crinoid stems, 45 Eldridge, 42 Crooked Creek, 15 elegans, Scolecopteris, 46 Cross, 42, 48, 103, 104, 106, 110 Eleven Mile Canyon, 8, 76,142 Crustaceans, 41 Elkhorn thrust, 20, 112, 113, 118, 120, 121, 122, Cryptozo&n coloradoensis Johnson, 41 123,124, 125,130, 135,136,140 Cuestas, 144 Elkhorn Upland, 9, 10, 12, 15, 73, 144 Currant Creek, 101 elongata, Aneimia sp. cf., 57 Cyanophyceae, 67 Emmons, 33, 35, 42, 92, 93, 94, 104, 127, 128, 136 Dactylopkyttum johnsoni, 40 Empire Gulch, 6 Daly, 99 Entrada formation, 27, 48 Dakota hogback, 10, 11, 12, 47, 49, 51, 52, 53, Eocene, 57, 138 54, 63, 125, 126, 130, 142 Eocene sedimentation and orogeny, 137 Dakota sandstone, 50, 51, 112, 113, 118, 119, Eocene-Oligocene volcanism, 81 125 equilateralis, Tellina, 56 Age and general relations, 51 erosa, Allantodiopsis, 59 General characteristics, 54 Erosion surfaces, 10, 148 Section in T. 9 S., R. 77 W., 162 Eshe Hills, 11, 12 Section in Sec. 32, T. 10 S., R. 76 W., 163 Eshe porphyry, 81,82,83,114,131,136 Thickness, 51 Eshe quartz monzonite, 81 Dane, 48 Eshe ranch, 81, 82, 83 Davis, J. R., 3 Etoblaltim persistens Scudder, 45 Deadwood Creek, 79 Etoblattina sp. Scudder, 45 Deadwood Gulch, 79, 80 Evans Peak, 40 Deflation, 10, 17, 145 Exogyra sp.?, 53 Deformation, 57 Extrusive rocks, 95 deformis, Inoceramus, 54 delicatula, Cercophyllis, 45 Fairplay, 10, 11, 12, 39, 44, 45, 46, 68, 73, 76, Denlalium gracile, 55, 56 77, 92, 144, 146 dentata, Sphenopteris, 46 Fasciolaria cheyennsis, 55 Denver formation, 57, 81, 84, 95, 100, 103, 106, Fasciolaria? sp., 56 112, 113, 114, 115, 116, 122, 124, 125, 131, Fault pattern, 131, 137 136 Faults, 31, 93, 94, 120, 125 Age and general relations, 59 Field work, 3 Description, 57 Finlay, 50 Fossils, 59 Fish, 53, 54, 55 . Section, 168, 169 Ficus berthoudi Lesquereux, 59 Thickness, 58 Ficus pseudopopulus Lesquereux, 59 denveriana, Joglans, 59 Flint, 136 Dielasma sp., 45 Florissant lake beds, 67 Diplotmema patentissima, 40 Flow breccia, 58, 82, 95 Huhoschi, Neuropteris, 40 foeminaeformis, Pecopteris, 46 Dolores formation, 48 Folds, major, 113 Dosiniopsis sp., 56 Foraminifera, 54 Drainage, 5, 15 Fork Gulch, 12 Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/955389/mem33-bm.pdf by guest on 03 October 2021 182 GEOLOGY AND ORIGIN OF SOTjtH PARK, COLORADO formosa, Mactra (Cymbophora), 56 Gram, O. E., 3 Forrest, Lesh, 3 Grand Canyon, 47 Fossils, 51, 54, 56, 57, 63, 68, 81 Granitization, 21 Fossil wood, 41, 62, 66 Gravel cover, 10 Fountain formation, 41 Gregory, 98 Fourmile Creek, 11, 73, 74, 78 Green Ridge surface, 147 Fouque, 99 Greenhorn limestone, 52, 53 Fox Hills formation, 54, 55, 56, 57, 81, 84, 86, Gryphaea newberryi, 53 87, 112, 114, 125 Gryphaea sp., 52 Section, 166 Guffey, 103, 106, 138 fragilis, Inoceramus sp? cf., 53 guUldmae, Platonus, 59 French Creek, 79 guttata, Spiloblattina, 45 French Pass, 8 gutzholdi, Sphenopteris, 46 Front Range, 3, 19, 21,48, 86, 110, 111 Gypsiferous soil, 44 Fuller, 110 Gypsum, 44, 45, 52 fusiformis, Pugnellis, cf., 53 Gyrodes sp., 53 gardineri, Spiloblattina, 45 Hall Buttes, 11,13,103,105 Garo, 10, 11,46,48, 51, 52, 53, 95,115, 132,142, Halymenites major, 56 145 Harris, D. V., 3 Garo sandstone, 10, 47, 134 Hartsel, 10, 11, 20, 45, 47, 49, 51, 53, 54, 55, Age and correlations, 48 57, 65, 76, 106,110, 112, 115, 124, 127, 131, General description, 47 132 Section in Sec. 13, T. 10 S., R. 77 W., 160 Hartsel fault, 130 Section in Sec. 36, T. 11 S., R. 76 W., 160 hastatus, Sibillariostrobus, 46 Thickness, 48 Heaton, 48, 133 Garry, 17, 19, 21, 23, 81, 110, 126 Heavy minerals: Grain counts, ratios, percent- Gas, 87 ages, diagnostic properties, and correla- gastroides, Arcula, 53 tions, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32 Gastropod, 45, 52, 66, 68 In Trump and Wagon tongue, 71 Bellerophon type, 45 Hemiaster sp.?, 55 Gazin, 67, 69 Henderson, C. F., 3 gaudini, Cdastrus (?), 57 Henderson, Junius, 55 General summary, 149 hendersoni, Gonyodiscus, 66 Geologic history of South Park, 132 Hermit shale, 47 Georgia Pass, 8 Hermosa formation, 41 gigantea (cf.), Neuropteris, 40 hesperia, Cissus, 59 Gilluly, 90 heterophylla, Neuropteris, 40 Girsandla sp.?, 41 High Creek, 76 Glacial erosion, 75 Hill, 19 Glacial stages, 146 Hoagland, A.