Lewis Shale |
| Usage of Geologic Unit Name: Lewis Shale (CO*,NM*,UT*,WY*) |
| Age: Cretaceous, Late* Campanian, late* Maastrichtian, early* |
| Geologic Province: Big Horn basin* Green River basin* Powder River basin* San Juan basin* Wind River basin* |
| Areal Extent: CO(w)* NM(nw)* UT* WY(s)* |
| Type Locality: Not designated. Named for occurrence at Fort Lewis in La Plata Valley, Kline quad, La Plata Co., CO (Cross and Spencer, 1899). Principal reference section designated at SW/4 SW/4 sec. 13 and SE/4 SE/4 sec. 14, T. 22 N., R. 89 W., Carbon Co., WY (Gill and others, 1970). |
| Subunits: (alphabetical): Dad Sandstone Member (WY*), Huerfanito Bentonite Bed (CO*,NM*), Teckla Sand Member (WY) or Teckla Sandstone Member (WY*). |
| Unit Name History: Named (Cross and Spencer, 1899). Areal limits (Beaumont and others, 1956). Revised (Hale, 1961; Hyden and others, 1965). Principal reference; Overview (Gill and others, 1970). Overview (Izett and others, 1971). Revised (Fassett and Hinds, 1971). Areal limits (Keefer, 1972). Teckla Sand Member named (Runge and others, 1973). Areal limits (Merewether and others, 1977). Mapped 1:50k in San Juan and McKinley Cos, NM; Areal limits (Scott and others, 1984). Biostratigraphic dating (Cobban, 1988; Roehler, 1993). Areal limits (Fox, 1993). |
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References Cross, C.W. and Spencer, A.C., 1899, Description of the La Plata quadrangle [Colorado]: U.S. Geological Survey Geologic Atlas of the United States, La Plata folio, no. 60, 14 p. Beaumont, E.C., Dane, C.H. and Sears, J.D., 1956, Revised nomenclature
of Mesaverde Group in San Juan basin, New Mexico: American Association
of Petroleum Geologists Bulletin, v. Hale, L.A., 1961, Late Cretaceous (Montanan) stratigraphy eastern Washakie basin, Carbon County, Wyoming, IN Symposium on Late Cretaceous rocks, Wyoming and adjacent areas: Wyoming Geological Association Field Conference Guidebook, no. 16, p. 129-137. Hyden, H.J., McAndrews, H. and Tschudy, R.H., 1965, The Foote Creek and Dutton Creek Formations, two new formations in the north part of the Laramie basin, Wyoming, IN Contributions to stratigraphy: U.S. Geological Survey Bulletin, 1194-K, p. K1-K12. Gill, J.R., Merewether, E.A. and Cobban, W.A., 1970, Stratigraphy and
nomenclature of some Upper Cretaceous and lower Tertiary rocks in south-central
Wyoming: U.S. Geological Survey Fassett, J.E. and Hinds, J.S., 1971, Geology and fuel resources of the
Fruitland Formation and Kirtland Shale of the San Juan basin, New Mexico
and Colorado: U.S. Geological Survey Izett, G.A., Cobban, W.A. and Gill, J.R., 1971, The Pierre Shale near Kremmling, Colorado, and its correlation to the east and the west, IN Shorter contributions to general geology, 1970: U.S. Geological Survey Professional Paper, 684-A, p. A1-A19. Keefer, W.R., 1972, Frontier, Cody, and Mesaverde Formations in the Wind
River and southern Bighorn basins, Wyoming, IN Geology of the Wind River
basin, central Wyoming: U.S. Runge, J.S., Wicker, W.L. and Eckelberg, D.J., 1973, A subsurface type
section of the Teckla Sand Member of the Lewis Shale Formation: Wyoming
Geological Association Earth Science Merewether, E.A., Cobban, W.A., Matson, R.M. and Magathan, W.J., 1977, Stratigraphic diagrams with electric logs of Upper Cretaceous rocks, Powder River basin, Natrona, Campbell, and Weston Counties, Wyoming, section B-B': U.S. Geological Survey Oil and Gas Investigations Chart, OC-74, 1 sheet. Scott, G.R., O'Sullivan, R.B. and Weide, D.L., 1984, Geologic map of the Chaco Culture National Historical Park, northwestern New Mexico [includes chapter on archaeology by W.B. Gillespie]: U.S. Geological Survey Miscellaneous Investigations Series Map, I-1571, 1 sheet, scale 1:50,000. Cobban, W.A., 1988, The Upper Cretaceous ammonite Rhaeboceras Meek in the Western Interior of the United States: U.S. Geological Survey Professional Paper, 1477, 15 p. Roehler, H.W., 1993, Stratigraphy of the Upper Cretaceous Fox Hills Sandstone
and adjacent parts of the Lewis Shale and Lance Formation, east flank
of the Rock Springs uplift, Fox, J.E., 1993, Stratigraphic cross sections showing electric logs of Upper Cretaceous and older rocks, Powder River basin, southeastern Montana and northeastern Wyoming: U.S. Geological Survey Oil and Gas Investigations Chart, OC-135 to OC-138, 4 sheets, sections A-A' trhough F-F'; G-G' through L-L'; M-M' through R-R'; S-S' through V-V.' Bereskin, S Robert, 2002, Geologic and production characteristics of
the Lewis Shale (San Almon, William R., Dawson, William C., Sutton, Sally J., Ethridge, Frank G., and Castelblanco, Bellatrix, 2002, Sequence stratigraphy, facies variation and petrophysical properties in deepwater shales, Upper Cretaceous Lewis Shale, south-central Wyoming: Gulf Coast Association of Geological Societies, Transactions, v. 52, p. 1041-1053. Almon, William R., Dawson, William C., Sutton, Sally J., Ethridge, Frank G., and Castelblanco, Bellatrix, 2001, Sequence stratigraphy, petrophysical variation, and sealing capacity in deepwater shales, Upper Cretaceous Lewis Shale, south-central Wyoming: Wyoming Geological Association Guidebook, v. 52, p. 163-182. Sealey, P. L., and Lucas, Spencer G., 1997, Paleontology, stratigraphy and biostratigraphy of the Upper Cretaceous Lewis Shale near Waterflow, San Juan County, New Mexico: New Mexico Geological Society, Guidebook, v. 48, p. 233-237. Howard, Alan D; Kochel, R Craig, 1988, Introduction to cuesta landforms and sapping processes on the Colorado Plateau. In, Sapping features of the Colorado Plateau; a comparative planetary geology field guide: Howard, Alan D., Kochel, R. Craig, and Holt, Henry E., NASA Special Publication, vol.491, pp.6-56. |
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The URL is: https://gotbooks.miracosta.edu/gonp/coloradoplateau/lexicon/lewis.htm Last modified: 1/7/2011 |