Alvord, D.C., and Miller, R.L., 1972, Geologic map of the Elkhorn City quadrangle, Kentucky-Virginia, and part of the Harman quadrangle, Pike County, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-951.

Ammerman, M.L., and Keller, G.R., 1979, Delineation of Rome trough in eastern Kentucky by gravity and deep drilling data: American Association of Petroleum Geologists Bulletin, v. 63, no. 3, p. 341-353.

Amos, D.H., 1967, Geologic map of part of the Smithland quadrangle, Livingston County, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-657. ------

1974, Geologic map of the Burna quadrangle, Livingston County, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1150. ------

1977, Geologic map of the Custer Quadrangle, Breckinridge and Hardin Counties, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1367.

Arkle, Thomas, Jr., 1974, Stratigraphy of the Pennsylvanian and Permian Systems of the Central Appalachians, in Briggs, Garrett, ed., Carboniferous of the southeastern United States: Geological Society of America, Special Paper 148, p. 5-29.

Ashley, G.H., and Glenn, L.C., 1906, Geology and mineral resources of part of the Cumberland Gap coal field, Kentucky: U.S. Geological Survey Professional Paper 49, 239 p.

Atherton, Elwood, 1971, Tectonic development of the Eastern Interior region of the United States, in Background materials for symposium on future petroleum potential of NPC region 9 (Illinois basin, Cincinnati arch, and northern part of Mississippi Embayment): Illinois State Geological Survey, Illinois Petroleum 96, p. 29-43.

Atherton, Elwood, and Palmer, J.E., 1979, The Mississippian and Pennsylvanian (Carboniferous) Systems in the United States--Illinois: U.S. Geological Survey Professional Paper 1110-L, 42 p.

Austin, C.B., and Keller, G.R., 1982, A crustal structure study of the northern Mississippi Embayment, in McKeown, F.A., and Pakiser, L.C., eds., Investigations of the New Madrid, Missouri, earthquake region: U.S. Geological Survey Professional Paper 1236,p. 83-93.

Bayley, R.W., and Muehlberger, W.R., compilers, 1968, Basement rock map of the United States (exclusive of Alaska and Hawaii): U.S. Geological Survey, scale 1:2,500,000.

Berry, W.B.N., and Boucot, A.J., eds., 1970, Correlation of the North American Silurian rocks: Geological Society of America Special Paper 102, 289 p.

Black, D.F.B., 1964, Cryptoexplosive structure near Versailles, Kentucky: U.S. Geological Survey Professional Paper 501-B, p. B9-B12. -

1978, Preliminary map showing structural geologic fabric of central Kentucky and part of Ohio: U.S. Geological Survey Open-File Report 78-454, scale 1:500,000.

Black, D.F.B., Cressman, E.R., and MacQuown, W.C., Jr., 1965, The Lexington Limestone (Middle Ordovician) of central Kentucky: U.S. Geological Survey Bulletin 1224-C, 29 p.

Black, D.F.B., and Cuppels, N.P., 1973, Strodes Creek Member (Upper Ordovician)-A new map unit in the Lexington Limestone of north-central Kentucky: U.S. Geological Survey Bulletin 1372-C, 16 p.

Black, D.F.B., and Haney, D.C., 1975, Selected structural features and associated dolostone occurrences in the vicinity of the Kentucky River fault system: Geological Society of Kentucky, Annual Field Conference, 1975, Guidebook: Lexington, Kentucky Geological Survey.

Black, D.F.B., Keller, G.R., and Johnson, R.W., Jr., 1977, Maps showing structural geology, Bouguer gravity, and aeromagnetic intensity for a portion of central Kentucky; four sheets [1:48,000]: Lexington, Kentucky Geological Survey.

Black, D.F.B., Keller, G.R., and Johnson, R.W., Jr., 1979, Basement control of surficial geological features in central Kentucky as indicated from tectonic, aeromagnetic, and gravity data: International Conference on New Basement Tectonics, 2d, Newark, Del., Proceedings.

Bohor, B.F., and Triplehorn, D.M., 1981, Volcanic origin of the flint clay parting in the Hazard No. 4 (Fire Clay) coal bed of the Breathitt Formation in eastern Kentucky, in Cobb, J.C., and others, Coal and coal bearing rocks of eastern Kentucky: Lexington, Kentucky Geological Survey.

Bolivar, S.L., 1982, Kimberlite of Elliott County, Kentucky: Kentucky Geological Survey, ser. XI, thesis ser. 2, 37 p.

Borella, P.E., and Osborne, R.H., 1978, Late Middle and early Late Ordovician history of the Cincinnati arch province, central Kentucky to central Tennessee: Geological Society of America Bulletin, v. 89, p. 1559-1573.

Bristol, H.M., and Howard, R.H., 1971, Paleogeologic map of the sub-Pennsylvanian Chesterian (Upper Mississippian) surface in the Illinois basin: Illinois State Geological Survey Circular 458, 13 p.

Brown, G.D., Jr., and Lineback, J.A., 1966, Lithostratigraphy of Cincinnatian Series (Upper Ordovician) in southeastern Indiana: Bulletin of the American Association of Petroleum Geologists, v. 50, p. 1018-1032.

Brown, W.R., 1977, Geologic map of the Willard quadrangle, eastern Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1387.

Bucher, W.H., 1925, The geology of the Jeptha Knob: Kentucky Geological Survey, ser. 6, v. 21, p. 193-237.

Burroughs, W.G., 1923, A Pottsville-filled channel in the Mississippian: Lexington, Kentucky Geological Survey, ser. 6, v. 10, p. 115-126. ------

1924, Geography of the western Kentucky coal field: Lexington, Kentucky Geological Survey, ser. 6, v. 24, 211 p. ------

1926, The geography of the Kentucky knobs: Kentucky Geological Survey, ser. 6, v. 19, 284 p.

Buschbach, T.C., and Atherton, Elwood, 1979, History of the structural uplift of the southern margin of the Illinois basin, in Palmer, J.E., and Dutcher, R.R., eds., Depositional and structural history of the Pennsylvanian System of the Illinois basin, p. 2: Invited papers: Field trip 9, Ninth International Congress on Carboniferous Stratigraphy and Geology, Illinois Geological Survey, p. 112-115.

Cable, M.S., and Beardsley, R.W., 1984, Structural controls on Late Cambrian and Early Ordovician sedimentation in eastern Kentucky: American Journal of Science, v. 284, p. 797-823.

Campbell, M.R., 1893, Geology of the Big Stone Gap coal field of Virginia and Kentucky: U.S. Geological Survey Bulletin 111, 106 p. ------

1898, Richmond, Kentucky: U.S. Geological Survey Geologic Atlas, Folio 46.

Cattermole, J.M., 1963, Geology of the Waterview quadrangle, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-286.

Cluff, R.M., Reinhold, M.L., and Lineback, J.A., 1981, The New Albany Shale Group of Illinois: Illinois Geological Survey Circular 518, 83 p., 4 pls.

Collins, H.R., 1979, The Mississippian and Pennsylvanian (Carboniferous) Systems in the United States-Ohio: U.S. Geological Survey Professional Paper 1110-E, 26 p.

Collinson, Charles, and Atherton, Elwood, 1975, Devonian System, in Handbook of Illinois stratigraphy: Illinois State Geological Survey Bulletin 95, p. 104-123.

Colton, G.W., 1970, The Appalachian basin-Its depositional sequences and their geological relationships, in Fisher, G.W., Pettijohn, F.J., Reed, J.C., Jr., and Weaver, K.N., 1970, Studies of Appalachian geology: central and southern: New York, Interscience, p. 5-47.

Conkin, J.E., and Conkin, B.M., 1969, Middle Devonian bone beds of Jefferson County, Kentucky [abs.]: Geological Society of America Abstract with Programs, 1969, pt. 4, Southeastern sec., 18th annual meeting p. 14. ------

1972, Guide to the rocks and fossils of Jefferson County, Kentucky, southern Indiana, and adjacent areas: Louisville, Ky., University of Louisville Printing Services, 331 p., 51 pi.

Cooper, B.N., and Prouty, C.E., 1943, Stratigraphy of the lower Middle Ordovician of Tazwell County, Virginia: Geological Society of America Bulletin, v. 54, no. 6, p. 819-886.

Cooper, G.A., 1956, Chazyan and related brachiopods: Smithsonian Miscellaneous Collections, v. 127, pt. 1, 1,024 p.

Coskren, T.D., and Rice, C.L., 1979, Contour map of the base of the Pennsylvanian System, eastern Kentucky: U.S. Geological Survey Miscellaneous Field Studies Map MF-1100.

Creasman, E.R., 1973, Lithostratigraphy and depositional environments of the Lexington Limestone (Ordovician) of central Kentucky: U.S. Geological Survey Professional Paper 768, 61 p. ------

1975, Geologic map of the Waddy quadrangle, central Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1255. ------

1981, Surface geology of the Jeptha Knob cryptoexplosion structure, Shelby County, Kentucky: U.S. Geological Survey Professional Paper 1151-B, 16 p.

Cressman, E.R., and Noger, M.C., 1976, Tidal-flat carbonate environments in the High Bridge Group (Middle Ordovician) of central Kentucky: Kentucky Geological Survey, ser. 10, Report of Investigations 18, 15 P. ------

1981, Geologic mapping of Kentucky-A history and evaluation of the Kentucky Geological Survey-U.S. Geological Survey mapping program, 1960-1978: U.S. Geological Survey Circular 801, 22 p.

Crider, A.F., 1913a, Economic geology of Tell City and Owensboro quadrangles: Kentucky Geological Survey, 4th ser., v. 1, pt. 1, p. 263-316. -

1913b, The fire-clays and fire-clay industries of the Olive Hill and Ashland Districts of eastern Kentucky: Kentucky Geological Survey, 4th ser., v. 1, pt. 2, p. 592-711.

Davis, D.H., 1923, The geography of the Jackson Purchase: Kentucky Geological Survey, ser. 6, v. 9, 185 p. ------

1924, The geography of the mountains of eastern Kentucky: Kentucky Geological Survey, ser. 6, v. 18, 180 p. ------

1927, The geography of the Blue Grass region of Kentucky: Kentucky Geological Survey, ser. 6, v. 23, 215 p.

Davis, R.W., Plebuch, R.O., Whitman, H.M., 1974, Hydrology and geology of deep sandstone aquifers of Pennsylvanian age in part of the Western Coal Field region, Kentucky: Kentucky Geological Survey, ser. 10, Report of Investigations 15, 26 p.

Denison, R.E., Lidiak, E.G., Bickford, M.E., and Kisvarsanyi, E.B., 1984, Geology and geochronology of Precambrian rocks in the Central Interior region of the United States: U.S. Geological Survey Professional Paper 1241-C, 20 p.

Dever, G.R., Jr., 1980, Stratigraphic relationships in the lower and middle Newman Limestone (Mississippian), east-central and northeastern Kentucky: Kentucky Geological Survey, ser. 11, thesis ser. 1, 49 p.; 1973, M.S. thesis, University of Kentucky, Lexington, Ky., 121 p. ------

1981, Carbonate-rock resources of the high Bridge Group (Middle Ordovician), central and north central Kentucky, in Roberts, T.G., ed., GSA Cincinnati 1981, Field trip guidebooks, v. 1: Stratigraphy, sedimentology: American Geological Institute, p. 9-12.

Dever, G.R., Jr., Hoge, H.P., Hester, N.C., and Ettensohn, P.R., 1977, Stratigraphic evidence for Late Paleozoic tectonism in northeastern Kentucky: Kentucky Geological Survey, Field trip guidebook, Eastern section of American Association of Petroleum Geologists, 80 p.

de Witt, Wallace, Jr., 1970, Age of the Bedford Shale, Berea Sandstone, and Sunbury Shale in the Appalachian and Michigan basins, Pennsylvania, Ohio, and Michigan: U.S. Geological Survey Bulletin 1294-G, 11 p.

de Witt, Wallace, Jr., Perry, W.J., Jr., and Wallace, L.G., 1975, Oil and gas data from Devonian and Silurian rocks in the Appalachian basin: U.S. Geological Survey Miscellaneous Investigations Map MF-I-917-B.

Dicken, S.N., 1935, A Kentucky solution cuesta: Journal of Geology, v. 43, no. 5, p. 539-544.

Diller, J.S., 1887, Peridotite of Elliott County, Kentucky: U.S. Geological Survey Bulletin 38, 31 p.

Dillman, S.B., and Ettensohn, F.R., 1980, Isopach map of the Devonian black-shale sequence (New Albany Chattanooga-Ohio Shale) in eastern Kentucky: U.S. Department of Energy, Morgantown Energy Technology Center METC/EGSP Series No. 515.

Douglass, R.C., 1979, The distribution of fusulinids and their correlation between the Illinois basin and the Appalachian basin, in Palmer, J.E., and Dutcher, R.R., eds., Depositional and structural history of the Illinois basin, pt. 2-Invited papers: Urbana, Illinois State Geological Survey.

Eardley, A.J., 1951, Structural geology of North America: New York, Harper Brothers, 624 p.

Elrod, M.N., 1899, The geologic relations of some St. Louis group eaves and sink holes: Indiana Academy of Science, Proceedings for 1898, p. 258-267.

Englund, K.J., 1962, Regional relation of the Lee Formation to overlying formations in southeastern Kentucky and adjacent areas of Tennessee [abs.]: Geological Society of America Special Paper 68, p. 69-70. ------

1964, Stratigraphy of the Lee Formation in the Cumberland Mountains of southeastern Kentucky: U.S. Geological Survey Professional Paper 501-B, p. B30-B38. ------

1968, Geology and coal resources of the Elk Valley area, Tennessee and Kentucky: U.S. Geological Survey Professional Paper 572, 59 p. ------

1974, Sandstone distribution patterns in the Pocahontas Formation of southwest Virginia and southern West Virginia, in Briggs, Garrett, ed., Carboniferous of the southeastern United States: Geological Society of America Special Paper 148, p. 3145. ------

1979, The Mississippian and Pennsylvanian (Carboniferous) Systems in the United States-Virginia: U.S. Geological Survey Professional Paper 1110-C, 21 p.

Englund, K.J., Arndt, H.H., and Henry, T.W., eds., 1979, Proposed Pennsylvanian stratotype, Virginia and West Virginia, Field trip no. 1, Ninth International Congress on Carboniferous Stratigraphy and Geology: American Geological Institute, A.G.I. Selected Guidebook Series No. 1, 138 p.

Englund, K.J., and DeLaney, A.0., 1966, Intertonguing relations of the Lee Formation in southwestern Virginia: U.S. Geological Survey Professional Paper 550-D, p. D47-D52.

Englund, K.J., and Henry, T.W., 1984, The Mississippian-Pennsylvanian boundary in the central Appalachians: International Carboniferous Congress, 9th, Compte rendu, p. 330-336.

Englund, K.J., and Roen, J.B., 1963, Origin of the Middlesboro basin, Kentucky: U.S. Geological Survey Professional Paper 450-E, p. E20-E22.

Englund, K.J., and Smith, H.L., 1960, Intertonguing and lateral gradation between the Pennington and Lee Formations in the tri-state area of Kentucky, Tennessee, and Virginia [abs.]: Geological Society of America Bulletin, v. 71, no. 12, pt. 2, p. 2015.

Englund, K.J., Smith, H.L., Harris, L.D., and Stephens, J.G., 1961, Geology of the Ewing quadrangle, Kentucky and Virginia: U.S. Geological Survey Geologic Quadrangle Map GQ-172. ------

1963, Geology of the Ewing quadrangle, Kentucky and Virginia: U.S. Geological Survey Bulletin 1142-B, 23 p.

Englund, X.J., and Windolph, J.F., Jr., 1971, Geology of the Carter Caves Sandstone (Mississippian) in northeastern Kentucky: U.S. Geological Survey Professional Paper 750-D, p. D99-DIO4.

Ervin, C.P., and McGinnis, L.D., 1975, Reelfoot Rift: Reactivated precursor to the Mississippi embayment: Geological Society of America Bulletin, v. 86, p. 1287-1295.

Ettensohn, F.R., and Barron, L.S., 1981, Depositional model for the Devonian-Mississippian black-shale sequence of North America: A tectono-climatic approach: U.S. Department of Energy, Morgantown Energy Technology Center Report DOE/METC/120402, 80 p.

Ettensohn, F.R., Fulton, L.P., and Kepferle, R.C., 1979, Use of scintillometer and gamma-ray logs for correlation and stratigraphy in homogeneous black shales: Summary: Geological Society of America Bulletin, pt. 1, v. 90, p. 421-423, and pt. 11, v. 90, p. 828849.

Ettensohn, F.R., Rice, C.R., Dever, G.R., Jr., and Chesnut, D.R.,

1984, Slade and Paragon Formations; New stratigraphic nomenclature for Mississippian rocks along the Cumberland Escarpment in Kentucky: U.S. Geological Survey Bulletin 1605-B, 37 p.

Fohs, F.J., 1912, The economic geology of Lewis and Rowan Counties: Kentucky Geological Survey, ser. 3, County Report 3, 62 p.

Fox, K.F., Jr., and Olive, W.W., 1966, Geologic map of the Birmingham Point quadrangle, western Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-471.

Frederiksen, N.O., Bybell, L.M., Christopher, R.A., Crone, A.J., Edwards, C.E., Gibson, T.G., Hazel, J.E., Repetski, J.E., Russ, D.P., Smith, C.C., and Ward, L.W., 1982, Biostratigraphy and paleoecology of lower Paleozoic, Upper Cretaceous, and lower Tertiary rocks in U.S. Geological Survey New Madrid test wells, southeastern Missouri: Tulane Studies in Geology and Paleontology, v. 17, p. 23-45.

Freeman, L.B., 1951, Regional aspects of Silurian and Devonian stratigraphy in Kentucky: Kentucky Geological Survey, ser. 9, Bulletin 6, 565 p. (reprinted 1959). ------

1953, Regional subsurface stratigraphy of the Cambrian and Ordovician in Kentucky and vicinity: Kentucky Geological Survey, ser. 9, Bulletin 12, 352 p.

French, R.R., 1967, Crushed stone resources of the Devonian and Silurian carbonate rocks of Indiana: Indiana Geological Survey Bulletin 37, 127 p.

Froelich, A.J., 1973, Geologic map of the Louellen quadrangle, southeastern Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1060.

Froelich, A.J., and Stone, B.D., 1973, Geologic map of parts of the Benham and Appalachia quadrangles, Harlan and Letcher Counties, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1059.

Fulton, L.P., 1979, Structure and isopach map of the New AlbanyChattanooga-Ohio Shale (Devonian and Mississippian) in Kentucky: Eastern sheet: Kentucky Geological Survey, ser. 11, scale 1:250,000.

Furnish, W.M., and Knapp, W.D., 1966, Lower Pennsylvanian fauna from eastern Kentucky-Part 1, Ammonoids: Journal of Paleontology, v. 40, no. 2, p. 296-308.

Gibbons, A.B., and Weiss, M.P., 1972, Geologic map of the Maysville West quadrangle, Kentucky-Ohio: U.S. Geological Survey Geologic Quadrangle Map GQ-1005.

Glenn, L.C., 1912, A geological reconnaissance of the Tradewater River region, with special reference to the coal beds: Kentucky Geological Survey Bulletin 17, 75 p.

Gordon, L.A., and Ettensohn, F.R., 1984, Stratigraphy, depositional environments and regional dolomitization of the Brassfield Formation (Llandoverian) in east-central Kentucky: Southeastern Geology, v. 25, no. 2, p. 101-115.

Gray, H.H., 1979, The Mississippian and Pennsylvanian (Carboniferous) Systems in the United States Indiana: U.S. Geological Survey Professional Paper 1110-K, 20 p.

Harris, L.D., 1970, Details of thin-skinned tectonics in parts of Valley and Ridge and Cumberland Plateau provinces of the southern Appalachians, in Fisher, G.W., Pettijohn, F.J., Reed, J.C., Jr., and Weaver, K.N., Studies in Appalachian geology: Central and southern: New York, Interscience, p. 161-173. ------

1975, Oil and gas data from the Lower Ordovician and Cambrian rocks of the Appalachian basin: U.S. Geological Survey Miscellaneous Investigations Series 1-917-D, 3 sheets, scale 1:2,500,000. ------

1978, The eastern interior aulacogen and its relation to Devonian shale-gas production: Second Eastern Gas Shales Symposium, METC/SP-78/6, p. 56-72.

Hasenmueller, N.R., and Woodard, G.S., eds., 1981, Studies of the New Albany Shale (Devonian and Mississippian) and equivalent strata in Indiana: U.S. Department of Energy, Morgantown Energy Technology Center, Contract no. DE-AC21-76MC05204, 100 P.

Hatch, N.L., Jr., 1964, Geology of the Shopville quadrangle, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-282.

Hays, W.H., 1964, Geology of the Grand Rivers quadrangle, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-328.

Hennen, R.V., and Reger, D.B., 1914, Logan and Mingo Counties: West Virginia Geological Survey [County Reports], 776 p.

Heyl, A.V., 1972, The 38th parallel lineament and its relationship to ore deposits: Economic Geology, v. 67, no. 7, p. 879-894.

Heyl, A.V., Brock, M.R., Jolly, J.L., and Wells, C.E., 1965, Regional structure of the southeast Missouri and Illinois-Kentucky mineral districts: U.S. Geological Survey Bulletin 1202-B, 20 p.

Heyl, A.V., and McKeown, F.A., 1978, Preliminary seismotectonic map of the central Mississippi Valley and environs: U.S. Geological Miscellaneous Field Studies Map NW-1011, scale 1:500,000.

Hinze, W.J., Braile, L.W., Keller, G.R., and Lidiak, E.G., 1980, Models for midcontinent tectonism, in Continental tectonics: Studies in Geophysics: Washington, D.C., National Academy of Science, p. 73-83.

Hoge, H.P., 1977, Geologic map of the Frenchburg quadrangle, east-central Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1390.

Huddle, J.W., Lyons, E.J., Smith, H.L., and Ferm, J.C., 1963, Coal reserves of eastern Kentucky: U.S. Geological Survey Bulletin 1120, 247 p.

Hylbert, D.K., and Philley, J.C., 1971, Geologic map of the Bangor quadrangle, east-central Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-947.

Jillson, W.R., 1919, The Kendrick Shale-A new calcareous fossil horizon in the coal measures of eastern Kentucky: Kentucky Department of Geology and Forestry: Ser. 5, Mineral and Forest Resources of Kentucky, v. 1, no. 2, p. 96-104. ------

1927, The topography of Kentucky: Kentucky Geological Survey, ser. 6, v. 30, 291 p. ------

1929, Geologic map of Kentucky: Kentucky Geological Survey, ser. 6, scale 1:500,000.

Jolly, J.L., and Heyl, A.V., Jr., 1964, Mineral paragenesis and zoning in the central Kentucky mineral district: Economic Geology, v. 59, no. 4, p. 596-624.

Jordan, D.W., 1980, Trace fossils and stratigraphy of Devonian black shale in east-central Kentucky: American Association of Petroleum Geologists Bulletin, v. 64, no. 5, p. 729-730.

Kehn, T.M., 1973, Sturgis Formation (Upper Pennsylvanian), a new map unit in the western Kentucky coal field: U.S. Geological Survey Bulletin 1394-B, 24 p. ------

1974, Geologic map of parts of the Dekoven and Saline Mines quadrangles, Crittenden and Union Counties, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1147.

Kehn, T.M., Beard, J.G., and Williamson, A.D., 1982, Mauzy Formation, a new stratigraphic unit of Permian age in western Kentucky: U.S. Geological Survey Bulletin 1529-H, p. 73-86.

Keller, G.R., Bland, A.E., and Greenberg, J.K., 1982, Evidence for a major Late Precambrian tectonic event (rifting?) in the eastern midcontinent region, United States: Tectonics, v. 1, p. 213-223.

Kepferle, R.C., 1971, Members of the Borden Formation (Mississippian) in north-central Kentucky: U.S. Geological Survey Bulletin 1354-B, p. El-BI8. ------

1973, Geologic map of the Raywick quadrangle, central Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1048. ------

1974, Geologic map of the Louisville East quadrangle, Jefferson County, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1203. ------

1977, Stratigraphy, petrology, and depositional environment of the Kenwood Siltstone Member, Borden Formation (Mississippian), Kentucky and Indiana: U.S. Geological Survey Professional Paper 1007, 49 p. ------

1981, Correlation of Devonian shale between the Appalachian and the Illinois basins facilitated by Foerstia (Protosalvinia), in Roberts, T.G., ed., GSA Cincinnati 1981, Field trip guidebooks, v. 11: Economic geology, structure: American Geological Institute, p. 334-335.

Kepferle, R.C., Lundegard, Paul, Maynard, J.B., Potter, P.E., Pryor,

W.A., Samuels, Neil, and Schauf, F.J., 1978, Paleocurrent systems in shaly basins: Preliminary results for Appalachian basin (Upper Devonian), in Schott, G.L., Overby, W.K., Jr., Hunt, A.E., and Komar, C.A., eds., Eastern Gas Shales Symposium, Ist, October 17-19, 1977, Proceedings: U.S. Department of Energy, Morgantown Energy Research Center MERC/SP-77-5, p. 434441.

Kepferle, R.C., Potter, P.E., and Pryor, W.A., 1981, Stratigraphy of the Chattanooga Shale (Upper Devonian and Lower Mississippian) in vicinity of Big Stone Gap, Wise County, Virginia, with a section on Petrology, by T.V. Stenbeck: U.S. Geological Survey Bulletin 1499, 20 p. I pl.

Kepferle, R.C., and Sable, E.G., 1977, Geologic map of the Fort Knox quadrangle, north-central Kentucky: U.S. Geological Survey Geologic Quadrangle Map CQ-1375.

Kepferle R.C., Wilson, E.N., and Ettensohn, F.R., 1978, Preliminary stratigraphic cross section showing radioactive zones in the Devonian black shales in the southern part of the Appalachian basin: U.S. Geological Survey Oil and Gas Investigations Chart OC-85.

King, E.R., and Zeitz, Isidore, 1978, The New York-Alabama lineament: Geophysical evidence for a major crustal break in the basement beneath the Appalachian basin: Geology, v. 6, p. 312318.

King, P.B., compiler, 1969, Tectonic map of North America: U.S. Geological Survey, scale 1:5,000,000.

Kissling, D.L., and Lineback, J.A., 1967, Paleoecological analysis of corals and stromatoporoids in a Devonian biostrome, Falls of the Ohio, Kentucky-Indiana: Geological Society of America Bulletin, v. 78, p. 157-174.

Kosanke, R.M., 1973, Palynological studies of the coals of the Princess Reserve district in northeastern Kentucky: U.S. Geological Survey Professional Paper 839, 22 p.

Kosanke, R.M., Simon, J.A., Wanless, H.R., and Willman, H.B.,

1960, Classification of the Pennsylvanian strata of Illinois: Illinois State Geological Survey Report of Investigations 214, 84 P.

Krause, H.F., and Treworgy, C.G., 1979, Major structures of the southern part of the Illinois basin, in Palmer, J.E., and Dutcher, R.R., eds., Depositional and structural history of the Pennsylvanian System of the Illinois basin, pt. 2: Invited papers: Field trip 9, Ninth International Congress on Carboniferous Stratigraphy and Geology, Illinois Geological Survey, p. 115-120.

Lambert, T.W., and MacCary, L.M., 1964, Geology of the Briensburg quadrangle, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-327.

Lee, Wallace, 1916, Geology of the Kentucky part of the Shawneetown quadrangle: Kentucky Geological Survey, ser. 4, v. 4, pt. 2, 73 p.

Leverett, Frank, 1929, Pleistocene of northern Kentucky: Kentucky Geological Survey, ser. 6, Bulletin 31, p. 1-80.

Lewis, R.Q., Sr., 1971, The Monteagle Limestone in south-central Kentucky: U.S. Geological Survey Bulletin 1324-E, 10 p.

Lewis, R.Q., Sr., and Taylor, A.R., 1974, Geologic map of the Mintonville quadrangle, Casey and Pulaski Counties, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1198. ------

1979, The Science Hill Sandstone Member of the Warsaw Formation and its relation to other clastic units in south-central Kentucky: U.S. Geological Survey Bulletin 1435-D, 15 p.

Lewis, R.Q., Sr., Taylor, A.R., and Weir, G.W., 1973, Geologic map of the Bobtown quadrangle, Pulaski County, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1102.

Lewis, R.Q., Sr., and Thaden, R.E., 1966, Geologic map of the Albany quadrangle, Kentucky-Tennessee: U.S. Geological Survey Geologic Quadrangle Map GQ-550.

Lidiak, E.G., and Zeitz, Isidore, 1976, Interpretation of aeromagnetic anomalies between latitudes 37N and 38N in the eastern and central United States: Geologic Society of America, Special Paper, 167, 37 p.

Luft, S.J., 1980, Map showing the Late Preglacial (Teays-age) course and pro-Illinoian deposits of the Licking River in north-central Kentucky: U.S. Geological Survey Miscellaneous Field Studies Map MF-1194, scale 1:125,000.

McDowell, R.C., 1978, Geological map of the levee quadrangle, east-central Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1478. ------

1981, Correlation chart for units on the Geologic Map of Kentucky: U.S. Geological Survey Miscellaneous Field Studies Map MF-1291, I sheet. ------

1983, Stratigraphy of the Silurian outcrop belt on the east side of the Cincinnati arch in Kentucky, with revisions in nomenclature: U.S. Geological Survey Professional Paper 1151-F, 27 p.

McDowell, R.C., Grabowski, G.J., Jr., and Moore, S.L., 1981, Geologic Map of Kentucky: U.S. Geological Survey, scale 1:250,000, 4 sheets.

McDowell, R.C., and Peterson, W.L., 1980, Stratigraphy of the Silurian outcrop belts in Kentucky: Evidence of gentle tectonism [abs.]: Geological Society of America, Abstracts with Programs, v. 12, no. 4, p. 184 and 201.

McDowell, R.C., Rice, C.L., and Newell, W.L., 1985, Revision of Lower and Middle Pennsylvanian nomenclature in the Cumberland overthrust sheet of southeastern Kentucky and eastern Tennessee: U.S. Geological Survey Bulletin 1605-A.

McDowell, R.C., and Weir, G.W., 1977, Geologic map of the Olympia quadrangle, Bath and Menifee Counties, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1406.

McFarlan, A.C., 1943, Geology of Kentucky: Lexington, University of Kentucky, 531 p. (reprinted 1961). -

1958, Behind the scenery in Kentucky: Kentucky Geological Survey, ser. 9, Special Publication 10, 144 p.

McGrain, Preston, 1965, Fuller's earth resources of the Jackson Purchase region, Kentucky: Kentucky Geological Survey, ser. 10, Bulletin 3, 23 p.

McGrain, Preston, and Helton, W.L., 1964, Gypsum and anhydrite in the St. Louis Limestone in northwestern Kentucky: Kentucky Geological Survey, ser. 10, Information Circular 13, 26 p.

McGuire, W.H., and Howell, Paul, 1963, Oil and gas possibilities of the Cambrian and Lower Ordovician in Kentucky: Lexington, Ky., Spindletop Research Center, 216 p.

McKeown, F.A., 1982, Overview and discussion, in McKeown F.A., and Pakiser,, L.C., eds., Investigations of the New Madrid, Missouri, earthquake region: U.S. Geological Survey Professional Paper 1236-A, p. 1-14. ------

1982, Investigations of the New Madrid, Missouri, earthquake region: U.S. Geological Survey Professional Paper 1236, 201 p.

MacQuown, W.C., Jr., 1967, Factors controlling porosity and permeability in the Curdsville Member of the Lexington Limestone: Kentucky University Water Resources Institute Research Report 7, 80 p.

Malott, C.A., 1919, The "American Bottoms" region of eastern Greene County, Indiana-A type unit in southern Indiana physiography: Indiana University Studies, v. 6, no. 40, 61 p.

Maughan, E.K., 1976, Geologic map of the Roxana quadrangle, Letcher and Harlan Counties, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1299.

Milici, R.C., Briggs, Garrett, Knox, L.M., Sitterly, P.D., and Statler, A.T., 1979, The Mississippian and Pennsylvanian (Carboniferous) Systems in the United States-Tennessee: U.S. Geological Survey Professional Paper 1110-G, 38 p.

Miller, A.M., 1919, The geology of Kentucky: Kentucky Department of Geology and Forestry, ser. 5, Bulletin 2, 292 p.

Miller, R.L., and Roen, J.B., 1973, Geologic map of the Pennington Gap quadrangle, Lee County, Virginia, and Harlan County, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1098.

Minsch, J.H., Stover, C.W., Reagor, B.G., and Smith, P.K., 1981, Earthquakes in the United States, July September 1980: U.S. Geological Survey Circular 853-C, 42 p.

Moore, B.R., and Clarke, M.K., 1970, The significance of a turbidite sequence in the Borden Formation (Mississippian) of eastern Kentucky and southern Ohio, in Lajoie, J., ed., Flysch sedimentology in North America: Geological Association of Canada, Special Paper no. 7, p. 211-218.

Moore, F.B., 1972, Geologic map of the Hammonville quadrangle, Larue and Hart Counties, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1051.

Moore, S.L., 1976, Geologic map of the Hibernia quadrangle, central Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1352. ------

1978, Geologic map of the Parksville quadrangle, Boyle and Casey Counties, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1494.

Morris, R.H., and Pierce, K.L., 1967, Geologic map of the Vanceburg quadrangle, Kentucky-Ohio: U.S. Geological Survey Geologic Quadrangle Map GQ-598.

Morse, W.C., 1931, Pennsylvanian invertebrate fauna (of Kentucky]: Kentucky Geological Survey, ser. 6, v. 36, p. 293-348.

Muir, N.M., 1950, Investigation of the Rose Run iron area, Bath County, Kentucky: U.S. Bureau of Mines Report of Investigations 4650, 43 p.

Nelson, W.H., 1962, Geology of the Holland quadrangle, Kentucky-Tennessee: U.S. Geological Survey Geologic Quadrangle Map GQ-174, scale 1:24,000.

Newell, W.L., 1975, Geologic map of the Frakes quadrangle and part of the Eagan quadrangle, southeastern Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1249.

Norton, C.W., Nuhfer, Anne, Fedorko, Nick, McClelland, S.W., Gillespie, W.H., Pfefferkorn, H.W., and Henry, T.W., 1979, Stop descriptions-Sixth day, in Englund, K.J., Arndt, H.H., and Henry, T.W., eds., Proposed Pennsylvanian stratotype, Virginia and West Virginia, Field trip 1, Ninth International Congress of Carboniferous Stratigraphy and Geology: American Geological Institute Selected Guidebook Series No. 1, 138 p.

Nuttli, O.W., 1979, Seismicity of the central United States, in Geology in the siting of nuclear power plants: Geological Society of America, Reviews in Engineering Geology, v. 4, p. 67-93.

Obermeier, S.F., 1984, Liquefaction potential in the central Mississippi Valley, in Gori, P.L., and Hays, W.W., eds., Proceedings of the symposium on the New Madrid seismic zone: U.S. Geological Survey Open-File Report 84-770, p. 391--446.

Olive, W.W., 1972, Geology of the Jackson Purchase region, Kentucky: Geological Society of Kentucky, Spring Field Conference, 11 P. -

1980, Geologic maps of the Jackson Purchase region, Kentucky: U.S. Geological Survey Miscellaneous Investigations Map 1-1217.

Olive, W.W., and Finch, W.I., 1969, Stratigraphic and mineralogic relations and ceramic properties of clay deposits of Eocene age in

the Jackson Purchase region, Kentucky, and in adjacent parts of Tennessee: U.S. Geological Survey Bulletin 1282, 35 p.

Oliver, W.A., Jr., 1960, Coral faunas in the Onondaga Limestone of New York: U.S. Geological Survey Professional Paper 400-B, p. B172-BI74.

Oliver, W.A., Jr., de Witt, Wallace, Jr., Dennison, J.M., Hoskins, D.M., and Huddle, J.W., 1969, Correlation of Devonian rock units in the Appalachian basin: U.S. Geological Survey Oil and Gas Investigations Chart OC 64.

Orr, R.W., and Pollock, C.A., 1968, Reference sections and correlations of Beechwood Member (North Vernon Limestone, Middle Devonian) of southern Indiana and northern Kentucky: American Association of Petroleum Geologists Bulletin, v. 52, p. 22572262.

Outerbridge, W.F., Weiss, M.P., and Osborne, R.H., 1973, Geologic map of the Higginsport quadrangle, Ohio-Kentucky, and part of the Russellville quadrangle, Mason County, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1065.

Owen, D.D., 1856, Report of the Geological Survey in Kentucky made during the years 1854-1855: Kentucky Geological Survey, ser. 1, v. 1, 416 p.

Palmer, J.E., 1969, Fault scarp exposures in the Saint Charles and Nortonville quadrangles, western Kentucky: U.S. Geological Survey Professional Paper 650-C, p. C75-C78.

Patton, J.B., 1949, Crushed stone in Indiana: Indiana Division of Geology, Report of Progress 3, 47 p.

Patton, J.B., and Dawson, T.A., 1955, Stratigraphy, in Murray, H.H., compiler, Sedimentation and stratigraphy of the Devonian rocks of southeastern Indiana: Indiana Geological Survey, Field Conference Guidebook 8, p. 37-43.

Perkins, R.D., 1963, Petrology of the Jeffersonville Limestone (Middle Devonian) of southeastern Indiana: Geological Society of America Bulletin, v. 74, p. 1335-1354.

Peterson, W.L., 1964, Geology of the Big Spring quadrangle, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-261. ------

1981, Lithostratigraphy of the Silurian rocks exposed on the west side of the Cincinnati arch in Kentucky: U.S. Geological Survey Professional Paper 1151-C, 29 p.

Peterson, W.L., and Kepferle, R.C., 1970, Deltaic deposits of the Borden Formation in central Kentucky: U.S. Geological Survey Professional Paper 700-D, p. D49-D54.

Phalen, W.C., 1908, Economic geology of the Kenova quadrangle, Kentucky, Ohio, and West Virginia: U.S. Geological Survey Bulletin 349, 158 p. ------

1912, Description of the Kenova quadrangle (Kentucky-West Virginia-Ohio): U.S. Geological Survey Atlas, Folio 184.

Philley, J.C., and Chaplin, J.R., 1976, Geologic map of the Wesleyville quadrangle, northeastern Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1305.

Pinckney, D.M., 1976, Mineral resources of the Illinois-Kentucky mining district: U.S. Geological Survey Professional Paper 970, 15 P.

Ping, R.G., and Rice C.L., 1980, Stoney Fork Member (new name) of the Breathitt Formation in southeasternmost Kentucky; in Sohl, N.F., and Wright, W.B., Changes in stratigraphic nomenclature by the U.S. Geological Survey, 1978: U.S. Geological Survey Bulletin 1482-A, p. A70-A76.

Pojeta, John, Jr., 1979, The Ordovician paleontology of Kentucky and nearby States-Introduction, in Pojeta, John, Jr., ed., Contributions to the Ordovician paleontology of Kentucky and nearby States: U.S. Geological Survey Professional Paper 1066, p. A1-A48.

Potter, P.E., 1955, The petrology and origin of the Lafayette gravel--Pt. 1, Mineralogy and petrology; Pt. 2, Geomorphic history: Journal of Geology, v. 63, no. 1, p. 1-38, no. 2, p. 115-132.

Potter, P.E., and Desborough, G.A., 1965, Pre-Pennsylvanian Evansville Valley and Caseyville (Pennsylvanian) sedimentation in the Illinois basin: Illinois State Geological Survey Circular 384, 16 p.

Potter, P.E., Pryor, W.A., Lundegard, Paul, Samuels, N., and Maynard, J.B., 1979, Devonian paleocurrents of the Appalachian basin: U.S. Department of Energy, METC/CR-79/22, 60 p.

Provo, L.J., Kepferle, R.C., and Potter, P.E., 1977, Three Lick Bed: Useful stratigraphic marker in upper Devonian shale in eastern Kentucky and adjacent areas of Ohio, West Virginia, and Tennessee: U.S. Department of Commerce, National Technical Information Service, ERDA-MERC/CR-77-2, 56 p. ------

1978, Division of black Ohio Shale in eastern Kentucky: American Association of Petroleum Geologists, v. 62, no. 9, p. 1703-1713.

Pryor, W.A., and Sable, E.G., 1974, Carboniferous of the Eastern Interior basin, in Briggs, Garrett, ed., Carboniferous of the southeastern United States: Geological Society of America Special Paper 148, p. 281 313.

Puffett, W.P., 1963, Geology of the Corbin quadrangle, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-231.

Ray, L.L., 1974, Geomorphology and Quaternary geology of the glaciated Ohio River Valley-A reconnaissance study: U.S. Geological Survey Professional Paper 826, 77 p.

Read, C.B., and Mamay, S.H., 1964, Upper Paleozoic floral zones and floral provinces of the United States, with a Glossary of stratigraphic terms by G.C. Keroher: U.S. Geological Survey Professional Paper 454-K, p. KI-K35.

Rexroad, C.B., 1967, Stratigraphy and conodont paleontology of the Brassfield (Silurian) in the Cincinnati arch area: Indiana Geological Survey Bulletin 36, 64 p.

Rice, C.L., 1978, The ages of the Lee, Breathitt, Caseyville, Tradewater, and Sturgis Formations, in Sohl, N.F., and Wright, W.B., Changes in stratigraphic nomenclature by the U.S. Geological Survey, 1977: U.S. Geological Survey Bulletin 1457-A, p. A108-A109. -

1984, Sandstone units of the Lee Formation and related strata in eastern Kentucky: U.S. Geological Survey Professional Paper 1151-G, 53 p.

Rice, C.L., and Haney, D.C., 1980, The Mississippian-Pennsylvanian Systemic boundary in eastern Kentucky Discussion and reply: Southeastern Geology, v. 21, no. 4, p. 299-305.

Rice, C.L., Kehn, T.M., and Douglass, R.C., 1979, Pennsylvanian correlations between the Eastern Interior and Appalachian basins, in Palmer, J.E., and Dutcher, R.R., eds., Depositional and structural history of the Illinois basin, Part 2-Invited papers: Illinois State Geological Survey, p. 103-105.

Rice, C.L., and Newell, W.L., 1975, Geologic map of the Saxton quadrangle and part of the Jellico East quadrangle, Whitley County, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1264.

Rice, C.L., Sable, E.G., Dever, G.R., Jr., and Kehn, T.M., 1979, The Mississippian and Pennsylvanian (Carboniferous) Systems in the United States-Kentucky: U.S. Geological Survey Professional Paper 1110-F, 32 p.

Rice, C.L., and Smith, J.H., 1980, Correlation of coal beds, coal zones, and key stratigraphic units in the Pennsylvanian rocks of eastern Kentucky: U.S. Geological Survey Miscellaneous Field Studies Map MF-1188.

Rice, D.D., 1975, Geologic map of the Helton quadrangle, southeastern Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1227.

Rogers, W.B., 1963, Geology of the Eddyville quadrangle, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-255.

Rogers, W.B., and Trace, R.D., 1976, Geologic map of the Crider quadrangle, Caldwell County, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1283.

Russ, D.P., 1982, Style and significance of surface deformation in the vicinity of New Madrid, Missouri, in McKeown, F.A., and Pakiser, L.C., eds., Investigations of the New Madrid, Missouri, earthquake region: U.S. Geological Survey Professional Paper 1236-H, p. 95-114.

Sable, E.G., 1964, Geology of the Constantine quadrangle, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-302. ------

1979, Eastern Interior Basin region, in Paleotectonic investigations of the Mississippian System in the United States, Part 1. Introduction and regional analyses of the Mississippian System: U.S. Geological Survey Professional Paper 1010-E, p. 59-106.

Sable, E.G., Kepferle, R.C., and Peterson, W.L., 1966, Harrodsburg Limestone in Kentucky: U.S. Geological Survey Bulletin 1224-1, p. 11-112.

Sauer, C.O., 1927, Geography of the Pennyroyal: Kentucky Geological Survey, ser. 6, v. 25, 303 p.

Schopf, J.M., and Schwietering, J.F., 1970, The Foerstia zone of the Ohio and Chattanooga Shales: U.S. Geological Survey Bulletin 1294-H, p. HI-HI5, 2 pl.

Schwalb, H.R., 1969, Paleozoic geology of the Jackson Purchase region, Kentucky, with reference to petroleum possibilities: Kentucky Geological Survey, ser. 10, Report of Investigations 10, 40 p.

Schwalb, H.R., and Norris, Ronald, 1980a, Isopach map of Blocher Member of New Albany Shale, western Kentucky: U.S. Department of Energy, Morgantown Energy Technology Center METC/ EGSP Series, No. 902. ------

1980b, Isopach map of Sweetland Creek Member of New Albany Shale, western Kentucky: U.S. Department of Energy, Morgantown Energy Technology Center METC/EGSP Series, No. 903. ------

1980c, Isopach map of Grassy Creek Member of New Albany Shale, western Kentucky: U.S. Department of Energy, Morgantown Energy Technology Center METC/EGSP Series, No. 905. ------

1980d, Studies of New Albany Shale in western Kentucky, Final report: U.S. Department of Energy, DOE/METC/8215-1, 55 p., app.

Seiders, V.M., 1965, Volcanic origin of flint clay in the Fire Clay coal bed, Breathitt Formation, eastern Kentucky, in U.S. Geological Survey Research, Chapter D: U.S. Geological Survey Professional Paper 525-D, p. D52-D54.

Shaler, N.S., 1887, On the original connection of the eastern and western coal fields of the Ohio Valley: Harvard College, Museum of Comparative Zoology, Memoir, v. 16, no. 2, 11 p.

Sharps, J.A., 1966, Geologic map of the Load quadrangle, Greenup County, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-519.

Shaw, E.W., and Savage, T.E., 1912, Murphysboro-Herrin, Illinois: U.S. Geological Survey Atlas, Folio 185, 15 p.

Shawe, F.R., and Gildersleeve, B.J., 1969, An anastomosing channel complex at the base of the Pennsylvanian System in western Kentucky: U.S. Geological Survey Professional Paper 650-D, p. 206-209.

Shawe, F.R., and Wigley, P.B., 1974, Geologic map of the Stanford quadrangle, Boyle and Lincoln Counties, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1137.

Siever, Raymond, 1957, Pennsylvanian sandstones of the Eastern Interior Coal Basin: Journal of Sedimentary Petrology, v. 27, p. 227-250.

Silberman, J.D., 1972, Cambro-Ordovician structural and stratigraphic relations of a portion of the Rome trough, in Hutcheson, D.W., ed., Proceedings of technical sessions, Kentucky Oil and Gas Association 34th and 35th annual meetings, 1970 and 1971: Kentucky Geological Survey, ser. 10, Special Publication 21, p. 35 45.

Simmons, G.C., 1966, Pre-Middle Devonian and post-Middle Devonian faulting and the Silurian-Devonian unconformity near Richmond, Kentucky: U.S. Geological Survey Professional Paper 550-C, p. C17-CI9. ------

1967, Geologic map of the Palmer quadrangle, east-central Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-613.

Sloss, L.L., 1982, The midcontinent province: United States, in Palmer, A.R., ed., Perspectives in regional geology synthesis, DNAG Special Publication 1, Geological Society of America, p. 27-39.

Snyder, F.G., 1968, Tectonic history of midcontinent United States: University of Missouri at Rolla Journal, no. 1, p. 65-77.

Soderberg, R.K., and Keller, G.R., 1981, Geophysical evidence for deep basin in western Kentucky: American Association of Petroleum Geologists Bulletin, v. 65, p. 226-234.

Stover, C.W., Reagor, B.G., and Algermissen, J.T., 1979, Seismicity map of the State of Kentucky: U.S. Geological Survey Miscellaneous Field Studies Map MP-1144, scale 1:1,000,000.

Stumm, E.C., 1964, Silurian and Devonian corals of the Falls of the Ohio: Geological Society of America Memoir 93, 184 p.

Swadley, WC, 1963, Geology of the Flaherty quadrangle, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-229. ------

1971, The preglacial Kentucky River of northern Kentucky, in Geological Survey Research, 1971: U.S. Geological Survey Professional Paper 750-D, p. D127-DI31. ------

1974, Preglacial Kentucky River, in Late Cenozoic geologic features of the middle Ohio River Valley: Lexington, Geological Society of Kentucky, Spring Field Conference, p. 17-24. ------

1980, New evidence supporting Nebraskan age for origin of Ohio River in north-central Kentucky: U.S. Geological Survey Professional Paper 1126-H, 7 p.

Thaden, R.E., and Lewis, R.Q., Sr., 1965, Geology of the Eli quadrangle, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-393.

Trace, R.D., 1962, Geology of the Salem quadrangle, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-206. ------

1966, Geologic map of the Marion quadrangle, Crittenden and Caldwell Counties, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-547. ------

1974a, Illinois-Kentucky fluorspar district: Kentucky Geological Survey, ser. 10, Special Publication 22, p. 58-76. ------

1974b, Geologic map of part of the Cave In Rock quadrangle, Crittenden County, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1201. ------

1976, Geologic map of the Iola quadrangle, Livingston and Crittenden Counties, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1288. ------

1979, Exploration of fluorspar vein deposits in western Kentucky: Economic Geology, v. 74, no. 7, p. 1684-1687.

Trace, R.D., and Amos, D.H., 1984, Stratigraphy and structure of the western Kentucky fluorspar district: U.S. Geological Survey Professional Paper 1151-D, 41 p.

Tschudy, R.H., 1970, Palynology of the Cretaceous-Tertiary boundary in the northern Rocky Mountain and Mississippi embayment regions, in Kosanke, R.M., and Cross, A.T., eds., Symposium on palynology of the Late Cretaceous and early Tertiary, San Francisco, Calif., Nov. 14, 1966: Geological Society of America Special Paper 127, p. 65-111.

Ulrich, G.E., and Klemic, Harry, 1966, Geologic map of the Caledonia quadrangle, Trigg and Christian Counties, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-604.

U.S. Geological Survey, 1970, National atlas of the United States: Washington, D.C., 417 p.

Wallace, L.G., Roen, J.B., and de Witt, Wallace, Jr., 1977, Preliminary stratigraphic cross section showing radioactive zone in the Devonian black shales in the western part of the Appalachian basin: U.S. Geological Survey Oil and Gas Investigations Chart OC-80, 2 sheets.

Wanless, H.R., 1946, Pennsylvanian geology of a part of the southern Appalachian coal field: Geological Society of America Memoir 13, 162 p. ------

1975, Appalachian region, in McKee, E.D., and Crosby, E.J., coordinators, Introduction and regional analyses of the Pennsylvanian System in the United States: U.S. Geological Survey Professional Paper 853, pt. 1, p. 17-62.

Warren, J.R., 1956, A study of magnetic anomalies associated with ultrabasic dikes in the western Kentucky fluorospar district: Kentucky Geological Survey, ser. 9, Bulletin 19, 38 p.

Webb, E.J., 1969, Geologic history of the Cambrian System in the Appalachian basin, in Rose, W.D., ed., Proceedings of technical sessions, Kentucky Oil and Gas Association 33rd annual meeting, 1969: Kentucky Geological Survey, ser. 10, Special Publication 18, p. 7-15.

Weir, G.W., 1967, Geologic map of the Berea quadrangle, east-central Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-649.

Weir, G.W., and Creasman, E.R., 1978, Geologic names of Ordovician rock-stratigraphic units exposed in Kentucky: U.S. Geological Survey Open-File Report 78-796, 254 p.

Weir, G.W., Gualtieri, J.L., and Schlanger, S.O., 1966, Borden Formation (Mississippian) in south and southeast-central Kentucky: U.S. Geological Survey Bulletin 1224-F, p. F1-F38.

Weir, G.W., and Mumma, M.D., 1973, Geologic map of the McKee quadrangle, Jackson and Owsley Counties, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1125.

Weir, G.W., Peterson, W.L., and Swadley, WC, 1979, Lithofacies and stratigraphic nomenclature of part of the Upper Ordovician section of Kentucky: U.S. Geological Survey Miscellaneous Investigations Series Map 1-1155. ------

1984, Lithostratigraphy of Upper Ordovician strata exposed in Kentucky: U.S. Geological Survey Professional Paper 1151-E, 121 p.

Weller, J.M., 1940, Geology and oil possibilities of extreme southern Illinois-Union, Johnson, Pope, Hardin, Alexander, Pulaski, and Massac Counties: Illinois State Geological Survey Report of Investigations 71, 71 p.

Whaley, P.W., Beard, J.G., Duffy, J.E., and Nelson, W.J., 1980, Structure and depositional environments of some Carboniferous rocks of western Kentucky: Eastern section, American Association of Petroleum Geologists, Field trip guidebook, Murray State University, 38 p.

White, I.C., 1891, Stratigraphy of the bituminous coal field of Pennsylvania, Ohio, and West Virginia: U.S. Geological Survey Bulletin 65, 212 p.

Whittington, C.L., and Ferm, J.C., 1967, Geologic map of the Grayson quadrangle, Carter County, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-640.

Williams, D.A., Williamson, A.D., and Beard, J.G., 1982, Stratigraphic framework of coal-bearing rocks in the western Kentucky coal field: Kentucky Geological Survey, ser. 11, Information Circular 8, 201 p.

Willman, H.B., and Payne, J.N., 1942, Geology and mineral resources of the Marseilles, Ottawa, and Streator quadrangles: Illinois State Geological Survey Bulletin 66, 388 p.

Wilson, C.W., Jr., 1949, Pre-Chattanooga stratigraphy in central Tennessee: Tennessee Division of Geology Bulletin 56, 406 p. ------

1962, Stratigraphy and geologic history of Middle Ordovician rocks of central Tennessee: Geological Society of America Bulletin, v. 73, p. 481-504. ------

1973, Geologic map of the Westmoreland quadrangle, Tennessee: Tennessee Department of Conservation, Division of Geology, scale 1:24,000. ------

1975, Geologic map of the LaFayette quadrangle, Tennessee: Tennessee Department of Conservation, Division of Geology, scale 1:24,000.

Withington, C.F., and Sable, E.G., 1969, Geologic map of the Rock Haven quadrangle, Kentucky-Indiana and part of the Laconia quadrangle, Kentucky: U.S. Geological Survey Geological Quadrangle Map GQ-780.

Wolcott, D.E., 1974, Geologic map of part of the Jenkins East quadrangle, Pike and Letcher Counties, Kentucky: U.S. Geological Survey Geologic Quadrangle Map GQ-1210.