Bulletin, Utgave 15The Office, 1917 |
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argillaceous sandstones Baculites bailers of water beds Bentonite Bighorn Basin Black shale Broken sand Brown shale buff Bull Cedar Mountain anticline chert clays Cloverly formation Cloverly sandstones Coarse sand Cody shale color contour Cretaceous crossbedded deposition displacement drilled Elk Butte dome Enalpac Oil fault plane feet thick flows of gas Fort Union Frontier formation Frontier sandstones gastroliths Gebo sandstones gravel grey sand Grey shale Hallene hogback horizons indurated interbedded Light shale Lime shell located log was furnished logs are available maroon massive sandstone McMahan Mesaverde formation miles Morrison formation normal faults oil and gas Oregon Basin field Oregon Coulee Park County Pauline Red shale rim rock ripple-marked sandstones and sandy sandy lime sandy shale Sections shale Sand shallow Shoshone River showing of oil strata streaks structural ridge syncline Thermopolis Shale thin thin-bedded total thickness U. S. Geol W. D. Waltman white sand Wiley anticline
Populære avsnitt
Side 221 - Dentalium Mesaverde Formation. Overlying the Cody shale is a succession of massive sandstones and sandy shales with coal seams which represent the Mesaverde formation. Here as elsewhere in the Bighorn Basin this formation can be divided into an upper and lower member as suggested by Hewett*, to which the names Gebo and Meeteetse are applied. Gebo Sandstone. The Gebo forms the inner high escarpment which completely surrounds the Oregon Basin field except in the *0p.
Side 215 - Butte and in a semicircular sweep swings due south and east until with a northeast course it cuts across the rim rock in a fault zone located in Sec. 35, Twp. 51 N., R. 100 W. Several of its tributaries coming from the south have cut narrow gaps into the high escarpment. GEOLOGY STRATIGRAPHY In Oregon Basin strata of Cretaceous age only are exposed, and these are restricted to the Ben ton and Montana series.
Side 223 - Locally conditions of deposition ceased, and more or less of the Cloverly was removed by erosion. CRETACEOUS TIME The Cretaceous period was inaugurated by an advance of the sea over the area of the Basin. Thus in the shallow water we find deposited, as the basal part of the marine transgressive series, the "Rusty Beds".
Side 233 - ... gas at 784 ft. 830- 907 Dark shale 907- 917 Light muddy sand 917-1039 Dark shale 1039-1043 Broken sand. Gas showing at 1039 ft. Sand seemed to be thin strata interspersed with strata of shale. 1043-1069 Dark shale. 2 bailers of water at 1069 ft. 1069-1077 Dark limey sand 1077-1086 Light shaly sand 1086-1170 Light shale 1170-1230 Blue shale 1230-1232 Extremely hard grey sand shell 1232-1240 Blue shale 1240-1250 Blue shale 1250-1290 Broken white sand. Apparently strata of sand interspersed with...
Side 224 - ... the many coal beds of the Mesaverde formation. Fluviatile conditions are indicated by the thick interbedded sandstones. The close of the Cretaceous was marked by great crustal disturbances resulting in the intense folding of all the sedimentaries and the formation of the various mountain ranges. This period of folding was accompanied by faulting, locally quite intense, as for example at Hart Mountain near Cody.
Side 233 - Dark shaley sand. Shows green oil and gas at 723 ft. 730- 777 Dark shale 777- 797 Black sand 797- 830 Dark shale, showing green oil and some gas at 784 ft. 830- 907 Dark shale 907- 917 Light muddy sand 917-1039 Dark shale 1039-1043 Broken sand. Gas showing at 1039 ft. Sand seemed to be thin strata interspersed with strata of shale. 1043-1069 Dark shale. 2 bailers of water at 1069 ft. 1069-1077 Dark limey sand 1077-1086 Light shaly sand 1086-1170 Light shale 1170-1230 Blue shale 1230-1232 Extremely...
Side 218 - The beds are a foot or less in thickness and are separated by gray sandy shale partings. The shale is most abundant in the middle of the formation. Hewett* reports a buff massive sandstone at the base, 25 feet thick, which directly overlies the top maroon clays of the Morrison. This massive sandstone seems to be only locally developed, as it was not found at...
Side 234 - Broken pink lime or gypsum, sandy 1495-1498 Red shale 1498-1500 Hard pink sand 1500-1506 Hard red sandy lime 1506-1512 Red shale 1512-1517 Hard red lime 1517-1519 Red sandy lime 1519-1524 Sharp white sand 1524-1530 Hard purple sand 1530-1535 Coarse white sand 1535-1540 White sand 3. McMAHAN WELL (No. 10 on Map) Property of the Enalpac Oil Co. Located in the SW.
Side 218 - ... in his description of the Shoshone River section near Cody describes the whole lower part of the Cretaceous system under the name Colorado formation, and although he makes a three-fold division into a lower, middle and upper member, he does not apply any formation names. The writer follows Lupton'sj suggestion as to formation names and uses the terms as indicated below.
Side 232 - ... came over top of casing at 1755; oil showed at 1765 feet. Shale 44 1830 Sand 17 1847 Shale, red 53 1900 Shale, grey 92 1992 Sand 76 2068 Shale, grey (some water) , . . . 92 2160 2. WELL No. 5 (No. 1 on Map) Property of the Enalpac Oil Co. Located in SE.