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..., Sangamon County, district (Shaw and Savage, 1913, p. 3). The Harrisburg (No. 5) Coal Member (Shaw and Savage, 1912, p. 7) is named for Harrisburg, Sali ...ringfield Coal Member (V), and in western Kentucky, where it is called the No. 9 (Mulford) coal. It is correlated with the Summit coal in Missouri.

...is, the "Second Vein" (No. 5) coal in the La Salle area, and the Streator (No. 7) coal in the Streator area. ...ber. It is extensively mined in western Kentucky, where it is known as the No. 11 coal, and it is correlated with the Lexington coal in Missouri and the

The Danville (No. 7) Coal Member of the Carbondale Formation (Bradley, 1870, p. 250-252), th ...called the Sparland (No. 7) coal in western Illinois and the "First Vein" (No. 7) coal in northern Illinois.

...nty. It was also applied incorrectly by Worthen (1870) to the Springfield (No. 5) Coal in parts of Fulton County. ...ssouri and Kansas, the Houchin Creek Coal Member (IVa) in Indiana, and the No. 8b coal in western Kentucky.

...the same exposure as the Hegeler Till Member, in the Harmattan Strip Mine No. 2 (SE SW SW 34, 20N-12W). ...ld glacial drift near Danville, Illinois: Illinois State Geological Survey Circular 457, 16 p.<br>

...nd southern Morgan and Sangamon Counties: Illinois State Geological Survey Circular 88,46 p.<br> ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.

.... One sandstone is below the Herrin Coal, another is below the Briar Hill (No. 5A) Coal, and a third is associated with the Dykersburg Shale. The Vermil ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.

...the DeWitt-McLean County area, Illinois: Illinois State Geological Survey Circular 369, 16 p.<br> ...entral Illinois and its regional relationships: Journal of Geology, v. 53, no. 5, p. 349-359.<br>

...cuts through several underlying stratigraphic units, including the Herrin (No. 6) Coal. Some channels are only a few hundred feet across, but the major o ...nvil Rock Sandstone of southern Illinois: Illinois State Geological Survey Circular 256, 49 p.<br>

...LINSON and, H. V. LELAND, 1970, Studies of Lake Michigan bottom sediments- No. 1. Preliminary stratigraphy of unconsolidated sediments from the southwest ...R. RUCH, and N. F. SHIMP, 1971, Studies of Lake Michigan bottom sediments- No. 7. Distribution of mercury in unconsolidated sediments from southern Lake

...he Missourian Series, is named for Graham Chapel, Peoria County. The name "No. 8" was first given to this coal by Lesquereux (1866, p. 213) for an exposu It previously was called Trivoli (No. 8) coal (Wanless, 1931a, p. 181-182, 190, 192).

...uced the name “Summum cyclical formation” for the cycle that includes coal No. 4 in western Illinois. Through time, the name Summum became attached to th ...n as the No. 4 coal in Illinois, although the bed originally designated as No. 4 by Worthen (1868) probably is the Springfield Coal.

The Danville (No. 7) Coal Member of the Carbondale Formation (Bradley, 1870, p. 250-252). ...called the Sparland (No. 7) coal in western Illinois and the "First Vein" (No. 7) coal in northern Illinois.

The type section is in the Harmattan Strip Mine No. 2 (SE SW SW 34, 20N-12W). ...ld glacial drift near Danville, Illinois: Illinois State Geological Survey Circular 457, 16 p.

...9a, p. 20; 1926, p. 255). In Kentucky, this coal is now referred to as the No. 10 coal. ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.

...inois, but a sandstone commonly present a short distance below the Summum (No. 4) Coal throughout the Illinois Basin is probably equivalent to the Pleasa ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br>

...Coal Member of the Carbondale Formation, the lowest member, was designated No. 2 by Worthen (1866, p. 59) for the coal in a mine shaft at Highland, Madis The coal has also been called the La Salle (No. 2) Coal or the "Third Vein" coal in northern Illinois.

...ck Island (Worthen and Shaw, 1873, p. 221, 229-232), the name Rock Island (No. 1) Coal came into general use. In western Illinois the Rock Island (No. 1) Coal occurs only in widely scattered areas. It attains a maximum thickn

...cretion-gley, and the weathering profile: Illinois State Geological Survey Circular 295, 39 p.<br> ...eathered zones of the drift-sheets of Illinois: Journal of Geology, v. 38, no. 1, p. 28-53.<br>

...ege Section and adjacent exposures and Northwest Tollway borings No. 2 and No. 5 (Kempton, 1963, p. 38). The type section is in the Rock Valley College S ..., Glacial Tills of Northwestern Illinois: Illinois State Geological Survey Circular 437, 47 p.<br>

...utheastern Illinois and western Kentucky, it is continuous but is commonly no more than a few inches of very fossiliferous calcareous shale or impure lim ...ulinids. It is almost invariably present where the Springfield-Harrisburg (No. 5) Coal occurs, although the limestone and coal are generally separated by

...the DeWitt-McLean County area, Illinois: Illinois State Geological Survey Circular 369, 16 p.<br> ...entral Illinois and its regional relationships: Journal of Geology, v. 53, no. 5, p. 349-359.<br>

...nd southern Morgan and Sangamon Counties: Illinois State Geological Survey Circular 88, 46 p.

The sandstone occurs above the Chapel (No. 8) Coal and below the Womac Coal (Andresen, 1961). ...Trivoli Sandstone in the Illinois Basin: Illinois State Geological Survey Circular 316, 31 p.<br>

It is overlain by the underclay of the Danville (No. 7) Coal and underlain by a few feet of greenish gray shale that separates ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.

...) Coal reserves of southeastern Illinois: Illinois State Geological Survey Circular 431, 25 p.

...cuts through several underlying stratigraphic units, including the Herrin (No. 6) Coal. Some channels are only a few hundred feet across, but the major o ...nvil Rock Sandstone of southern Illinois: Illinois State Geological Survey Circular 256, 49 p.<br>

...nd southern Morgan and Sangamon Counties: Illinois State Geological Survey Circular 88,46 p.<br> ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.

...the same exposure as the Hegeler Till Member, in the Harmattan Strip Mine No. 2 (SE SW SW 34, 20N-12W). ...ld glacial drift near Danville, Illinois: Illinois State Geological Survey Circular 457, 16 p.<br>

The Chapel (No. 8) Coal Member of the Modesto Formation (Kosanke et al., 1960, p. 38). It previously was called Trivoli (No. 8) coal (Wanless, 1931a, p. 181-182, 190, 192).

...nodules in the type locality, but in many exposures it exhibits little or no chert. ...n northeastern and northwestern Illinois: Illinois State Geological Survey Circular 479, 55 p.

...Coal of western Illinois, the Upper Block Coal Member of Indiana, and the No. 3 (Ice House) coal of western Kentucky. ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br>

...cretion-gley, and the weathering profile: Illinois State Geological Survey Circular 295, 39 p.<br> ...eathered zones of the drift-sheets of Illinois: Journal of Geology, v. 38, no. 1, p. 28-53.<br>

...e part of southern Illinois, but it is seldom over 2 feet thick, generally no more than a few inches. ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.

...widely present in Illinois 10-30 feet below the top of the formation, but no outcrops have been found (Meents and Swann, 1965), except recently in a qua ...imestone (Devonian) of southern Illinois: Illinois State Geological Survey Circular 389, 34 p.

...Coal of southern Illinois, the Upper Block Coal Member of Indiana, and the No. 3 (Ice House) coal of western Kentucky. ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br>

...coal” or “No. 6.” In addition, Lee revised the Dekoven to Western Kentucky No. 7, which is the current informal usage. Butts (1925) was the first author ...ucky. In Illinois, some authors called the Davis and Dekoven the No. 2 and No. 3 coals, respectively.

...in most of the state. It generally occurs immediately above the Danville (No. 7) Coal Member, but in several places a dark gray, very impure limestone, ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.

...Member (VI), which is an important commercial coal in Indiana, and to the No. 12 coal in western Kentucky. ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.

The Modesto Formation includes strata from the top of the Danville (No. 7) Coal to the base of the Shoal Creek Limestone Member or the La Salle Li ...nd southern Morgan and Sangamon Counties: Illinois State Geological Survey Circular 88, 46 p.

The Summum (No. 4) Coal, which also thickens in the same unfilled channels as the Kerton C ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br>

...optically stimulated luminescence dating: Illinois State Geological Survey Circular 580, 15 p. ...ege Section and adjacent exposures and Northwest Tollway borings No. 2 and No. 5 (Kempton, 1963, p. 38). The type section is in the Rock Valley College S

...ween two tills, subsequently correlated with the Kansan and Nebraskan, but no well developed zonal soil occurs between them. <br> No Afton Soil accretion-gleys have been observed in Illinois. Deposits of orga

...found, it is 15 feet above the Herrin Coal and 9 feet below the Danville (No. 7) Coal. ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br>

...ck Island (Worthen and Shaw, 1873, p. 221, 229-232), the name Rock Island (No. 1) Coal came into general use. In western Illinois the Rock Island (No. 1) Coal occurs only in widely scattered areas. It attains a maximum thickn

...ved to have been estuaries, and in those areas the underlying Rock Island (No. 1) Coal is also thicker than elsewhere. ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br>

...pted here as formal members. In extreme southern and southeastern Illinois no subdivision into members has as yet been proposed, but the Berry Clay Membe ..., Glacial Tills of Northwestern Illinois: Illinois State Geological Survey Circular 437, 47 p.<br>

...d and is commonly found throughout the same area as the underlying Chapel (No. 8) Coal, from which it is commonly separated by 1-2 feet of black fissile ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br>

...te. Macon, Sangamon, and Shelby Counties: Illinois State Geological Survey Circular 105, 57 p.<br>

...f southwestern Illinois the Piasa lies only a few feet above the Danville (No. 7) Coal and is separated from it by either variegated claystone, gray shal ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.

No coal equivalent to the Hermon Coal has been recognized in southern Illinois ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br>

...he Beaverton, Byron West, Dixon Northwest, Grand Detour, and Meridian Road No. 3 Sections (Frye et al., 1969). ..., Glacial Tills of Northwestern Illinois: Illinois State Geological Survey Circular 437, 47 p.

...y of the Wisconsinan loesses of Illinois: Illinois State Geological Survey Circular 334, 55 p.<br> ...ation of Woodfordian loesses of Illinois: Illinois State Geological Survey Circular 427, 44 p.<br>

...tern part of its area the West Franklin is closely overlain by the Chapel (No. 8) Coal. ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br>

...k Railroad Cut Section, located 9.6 kilometers (6 mi) northwest of Morton. No longer exposed. ...Stage in the Lake Michigan Glacial Lobe: Illinois State Geological Survey Circular 285, 16 p.<br>

...by the Brereton Limestone or, locally, by either the Anna Shale or Herrin (No. 6) Coal. ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br>

...Roodhouse, in the NW¼ of sec. 21, T 12 N, R 11 W, Greene County, Illinois. No description has heretofore appeared in print. A composite section from the ...ly dull—with only fine bright streaks. Either cannel or very high in ash.” No details are available on the upper Roodhouse, which averaged about 2 ft (60

...pted here as formal members. In extreme southern and southeastern Illinois no subdivision into members has as yet been proposed, but the Berry Clay Membe ..., Glacial Tills of Northwestern Illinois: Illinois State Geological Survey Circular 437, 47 p.<br>

No type section was designated, but a quarry 0.8 mile east of Salem is conside ...Salem Limestone in southwestern Illinois: Illinois State Geological Survey Circular 284, 32p.<br>

Friedman did not identify the borehole, and no record matching its location appears in the well-log database of the Indian ...le and Thompson 2004) and the Floris Formation in Iowa (Ravn et al. 1984). No formal names are used for such sandstone in the Appalachian Basin.

The type section is in the Harmattan Strip Mine No. 2 (SE SW SW 34, 20N-12W). ...ld glacial drift near Danville, Illinois: Illinois State Geological Survey Circular 457, 16 p.

...th the identity of the Davis and Wiley Coals solidly established, there is no need to continue using two names for the same member. Because Davis has pri ...an stages in Iowa: Iowa Geological and Water Survey, Special Report Series No. 5, 140 p.<br>

...ian glacial boundary in western Illinois: Illinois State Geological Survey Circular 364, p. 28.<br> ...eology of the Vandalia, Illinois, region: Illinois State Geological Survey Circular 442, 24 p.<br>

...tan at the base, gray tan in the middle, and pink tan at the top. Although no changes in these members are made in this report (except removal of genetic ...miles (6.4 km) southeast of Roxana; good for lithology and lower contact. No longer available, has been mined out for fill.

...ween two tills, subsequently correlated with the Kansan and Nebraskan, but no well developed zonal soil occurs between them. <br> No Afton Soil accretion-gleys have been observed in Illinois. Deposits of orga

...Edgewood Formation, northeastern Illinois: Journal of Paleontology, v. 36, no. 6, p. 1383-1386; Illinois State Geological Survey Reprint 1963-A.<br> ...n northeastern and northwestern Illinois: Illinois State Geological Survey Circular 479, 55 p.

...trata from the base of the Pennsylvanian up to the base of the Colchester (No. 2) Coal, a widely recognized key member that has been traced throughout th ...issippian) surface in the Illinois Basin: Illinois State Geological Survey Circular 458, 14 p.<br>

...astern Illinois is bright-banded coal having a moderate sulfur content and no consistent clastic layers. ...he Robinson Branch Coal Bed of Missouri and Kansas (Figure 4-12). There is no named correlative in Iowa or the Appalachian Basin.

...st of these the till is distorted, and the quantity so small that there is no assurance that the till has not been transported. The high-level outwash gr ...near Winchester, Illinois: Geological Society of America Bulletin, v. 40, no. 2, p. 481-489.<br>

...e mine was active. However, upon closure, all the pits were backfilled and no bedrock exposures remain. ...et Mine (SW¼ NE¼ NE¼ sec. 6, T 10 S, R 4 E, Williamson County, ISGS county no. 23996, Crab Orchard 7.5' quadrangle). In the Morris core, the Will Scarlet

...A photograph on page 29 bears the caption, “The heavy sandstone below coal No. 5 (Vermilionville sandstone) outcropping along the big bend in Vermilion R Wanless (1956) and Kosanke et al. (1960) listed the locality. No description has been published, and none exists in ISGS field notes. In fac

...nd southern Morgan and Sangamon Counties: Illinois State Geological Survey Circular 88, 46 p.

No longer exposed. ...Stage in the Lake Michigan Glacial Lobe: Illinois State Geological Survey Circular 285, 16 p.<br>

The Modesto Formation includes strata from the top of the Danville (No. 7) Coal to the base of the Shoal Creek Limestone Member or the La Salle Li ...nd southern Morgan and Sangamon Counties: Illinois State Geological Survey Circular 88, 46 p.

It is overlain by the underclay of the Danville (No. 7) Coal and underlain by a few feet of greenish gray shale that separates ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.

...tan at the base, gray tan in the middle, and pink tan at the top. Although no changes in these members are made in this report (except removal of genetic No longer available, has been mined out for fill.

...he partings become thicker and are shaly. In places the formation contains no chert, but scattered nodules are not rare, and in a zone 3-5 feet thick 15- ...n northeastern and northwestern Illinois: Illinois State Geological Survey Circular 479, 55 p.

...the granite and the rhyolite; it contains an abundance of micropegmatite. No mafic igneous rocks or metasediments have been encountered in the basement ..., 1965, Precambrian basement of Illinois: Illinois State Geological Survey Circular 382, 13 p.<br>

The sandstone occurs above the Chapel (No. 8) Coal and below the Womac Coal (Andresen, 1961). ...Trivoli Sandstone in the Illinois Basin: Illinois State Geological Survey Circular 316, 31 p.<br>

...trata in northern Illinois have been correlated with the Guelph Formation, no Cayugan age strata are recognized in that area. However, the generally acce ...Cairo, La Center, and Thebes Quadrangles: Illinois State Geological Survey Circular 332, 39 p.<br>

...ian glacial boundary in western Illinois: Illinois State Geological Survey Circular 364, p. 28.<br> ...eology of the Vandalia, Illinois, region: Illinois State Geological Survey Circular 442, 24 p.<br>

..., Glacial tills of northwestern Illinois; Illinois State Geological Survey Circular 437, 47 p.<br> ...ian glacial boundary in western Illinois: Illinois State Geological Survey Circular 364, p. 28.<br>

...92) showed the Isabel sandstone lying directly below the underclay of coal No. 2 [Colchester] and filling a channel that cuts through several underlying No specific information has been published. The lower contact may be sharp but

...r thick deposits of the silty gray shale that locally overlies the Herrin (No. 6) Coal. In parts of southwestern, western, and eastern Illinois, the Brer ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br>

...criptions that include part or all of the Walshville Member are available, no core suitable for a type section has been preserved.<br> Moreover, no single well log fully characterizes the Walshville Member because the Walsh

...Coal of western Illinois, the Upper Block Coal Member of Indiana, and the No. 3 (Ice House) coal of western Kentucky. ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br>

...nodules in the type locality, but in many exposures it exhibits little or no chert. ...n northeastern and northwestern Illinois: Illinois State Geological Survey Circular 479, 55 p.

...bout 16 in. (39 cm) thick (Weller et al. 1942; Wanless 1957). The coal has no economic significance and has not been mapped. The coal is probably absent ...position of the Abingdon in the Midcontinent Basin is closely constrained, no exact equivalent has been identified (Figure 4-12).

...e part of southern Illinois, but it is seldom over 2 feet thick, generally no more than a few inches. ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.

...y, Illinois. Kosanke et al. (1960) formalized the unit name as the Summum (No. 4) Coal Member (of Carbondale Formation). Jacobson et al. (1985) adopted t ...the Indiana Geological Survey core facility in Bloomington under core file no. 609.

...Coal of southern Illinois, the Upper Block Coal Member of Indiana, and the No. 3 (Ice House) coal of western Kentucky. ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br>

...in most of the state. It generally occurs immediately above the Danville (No. 7) Coal Member, but in several places a dark gray, very impure limestone, ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.

...he Beaverton, Byron West, Dixon Northwest, Grand Detour, and Meridian Road No. 3 Sections (Frye et al., 1969). ..., Glacial Tills of Northwestern Illinois: Illinois State Geological Survey Circular 437, 47 p.

Although the Neda rests sharply on the underlying Brainard Shale, there is no evidence of an unconformity. The upper contact, however, is sharp and erosi ...Science Transactions, v. 43, p. 176-182; Illinois State Geological Survey Circular 170, p. 176-182.

...Member (VI), which is an important commercial coal in Indiana, and to the No. 12 coal in western Kentucky. ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.

...to mention the Kerton Creek coal in print was Ekblaw (1931), who presented no details. Wanless (1957) made the first detailed description of the Kerton C

...found, it is 15 feet above the Herrin Coal and 9 feet below the Danville (No. 7) Coal. ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br>

...widely present in Illinois 10-30 feet below the top of the formation, but no outcrops have been found (Meents and Swann, 1965), except recently in a qua ...imestone (Devonian) of southern Illinois: Illinois State Geological Survey Circular 389, 34 p.

No type section was designated. ...Salem Limestone in southwestern Illinois: Illinois State Geological Survey Circular 284, 32p.<br>

...on. Wanless (1956) listed outcrops in T12S, R5E and R6E and T13S, R6E, but no description has been published. ...nsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey, Circular 217, 14 p.<br>

...d and is commonly found throughout the same area as the underlying Chapel (No. 8) Coal, from which it is commonly separated by 1-2 feet of black fissile ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br>

...ntinent areas, this sequence continues upward into the Permian System, but no Permian rocks have been found in Illinois. The basal unconformity separatin ...issippian) surface in the Illinois Basin: Illinois State Geological Survey Circular 458, 14 p.<br>

...f southwestern Illinois the Piasa lies only a few feet above the Danville (No. 7) Coal and is separated from it by either variegated claystone, gray shal ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.

...posits to the abundantly fossiliferous marine sediments south of Illinois. No fossils have been found in the western Illinois deposits, but the compositi ...ian glacial boundary in western Illinois: Illinois State Geological Survey Circular 364, 28 p.<br>

...fayette Gravel. Pt. 1—Mineralogy and petrology: Journal of Geology, v. 63, no. 1, p. 1-38.<br> ...the Lafayette Gravel. Pt. 2—Geomorphic history: Journal of Geology, v. 63, no. 2, p. 115-132.<br>

...le Pennsylvanian, of the Illinois Basin: Illinois State Geological Survey, Circular 605, 85 p., 6 pls.] ...nd the coarse facies overlying shales and siltstones over the Springfield (No. 5) Coal.”<br>

...50, Loess formations of the Mississippi Valley: Journal of Geology, v. 58, no. 6, p. 599-623. (Reprinted as Illinois State Geological Survey Report of In ...ofiles in Illinois, Part 1—Glacial Tills: Illinois State Geological Survey Circular 347, 55 p. <br>

...ved to have been estuaries, and in those areas the underlying Rock Island (No. 1) Coal is also thicker than elsewhere. ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br>

...st of these the till is distorted, and the quantity so small that there is no assurance that the till has not been transported. The high-level outwash gr ...near Winchester, Illinois: Geological Society of America Bulletin, v. 40, no. 2, p. 481-489.<br>

...aphy of the late Pleistocene loesses of Kansas: Journal of Geology, v. 59, no. 4, p. 287-305.<br> ...Stage in the Lake Michigan Glacial Lobe: Illinois State Geological Survey Circular 285, 16 p.<br>

...te. Macon, Sangamon, and Shelby Counties: Illinois State Geological Survey Circular 105, 57 p.<br>

No coal equivalent to the Hermon Coal has been recognized in southern Illinois ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br>

...Illinois, the Davis and overlying Dekoven were sometimes called No. 2 and No. 3 coals, respectively. No type section was designated. Norwood (1912, p. 333–335) gave a succinct d

...tern part of its area the West Franklin is closely overlain by the Chapel (No. 8) Coal. ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br>

...by the Brereton Limestone or, locally, by either the Anna Shale or Herrin (No. 6) Coal. ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br>

...the granite and the rhyolite; it contains an abundance of micropegmatite. No mafic igneous rocks or metasediments have been encountered in the basement ..., 1965, Precambrian basement of Illinois: Illinois State Geological Survey Circular 382, 13 p.<br>

...riatus, Polygnathus communis carinus'', and ''Bactrognathus hamatus'', but no diagnostic Kinderhookian species. The conodont ''Gnathodus semiglaber''--'' ...an rocks of the Upper Mississippi Valley: Illinois State Geological Survey Circular 328, 32 p.<br>

...ore than half the system in the northern two-thirds of the state, contains no fossils, middle and early Cambrian strata could be present even though not ...nd grade into dolomite, the proportion of sandstone diminishes to probably no more than 25 percent in extreme southern Illinois (fig. Є-4). <br>

..., Glacial tills of northwestern Illinois; Illinois State Geological Survey Circular 437, 47 p.<br> ...ian glacial boundary in western Illinois: Illinois State Geological Survey Circular 364, p. 28.<br>

...or less informal until Kosanke et al. (1960) adopted the form Springfield (No. 5) Coal Member. Dual usage of the Springfield and Harrisburg Coals persist ...oal V in Indiana, and No. 9 coal in western Kentucky. The name Harrisburg (No. 5) Coal prevailed in southern Illinois until Jacobson et al. (1985) adopte

The till has been studied in detail in the Lee No. 3 core boring (Frye et al., 1969). It is bounded at the top by the sharply ..., Glacial tills of northwestern Illinois: Illinois State Geological Survey Circular 437, 47 p.

The Dutch Creek Sandstone Member has no designated type section. An exposure along a secondary road 1.1 miles north ...imestone (Devonian) of southern Illinois: Illinois State Geological Survey Circular 389, 34 p.<br>

...Edgewood Formation, northeastern Illinois: Journal of Paleontology, v. 36, no. 6, p. 1383-1386; Illinois State Geological Survey Reprint 1963-A.<br> ...n northeastern and northwestern Illinois: Illinois State Geological Survey Circular 479, 55 p.

...fayette Gravel. Pt. 1—Mineralogy and petrology: Journal of Geology, v. 63, no. 1, p. 1-38.<br> ...the Lafayette Gravel. Pt. 2—Geomorphic history: Journal of Geology, v. 63, no. 2, p. 115-132.<br>

...e hole was drilled in sec. 16, T 3 S, R 2 E, Jefferson County, ISGS county no. 2786. The Energy Shale is 10.0 ft (3.05 m) thick and occupies the depth in ...n crevasse splays of the Mississippi delta, but here the resemblance ends. No evidence for natural levees has been found, and Energy Shale is nearly an o

No geophysical log showing the Cardiff coal is known. ...(1915, p. 35) reported that the Cardiff coal in places rests on top of the No. 2 Coal. On the other hand, the ecological conditions in a coal swamp fores

...gic history of the northern Mississippi Embayment: Cretaceous Research 18, no. 5, p. 687-696. ...gic history of the northern Mississippi Embayment: Cretaceous Research 18, no. 5, p. 687-696.

...sec. 34, T 9 S, R 4 E, Williamson County, Carrier Mills 7.5' quadrangle). No description was published, but Hopkins (1968) reported the Dykersburg to be ...ole no. IL-1, drilled in sec. 27, T 7 S, R 7 E, Saline County (ISGS county no. 25748). The Dykersburg Member is 48.0 ft (14.6 m) thick and lies at the de

No type section was designated for the Grassy Creek Shale and some of the sect ...dle Devonian strata of southern Illinois: Illinois State Geological Survey Circular 441, 45 p.<br>

...(1870, p. 93, 100) first noted the presence of black shale overlying coal No. 5 (Springfield) in Fulton County, Illinois. Innumerable subsequent authors The name refers to the Turner No. 1 Mine, where the core that serves as the type section was drilled. The mi

...posits to the abundantly fossiliferous marine sediments south of Illinois. No fossils have been found in the western Illinois deposits, but the compositi ...ian glacial boundary in western Illinois: Illinois State Geological Survey Circular 364, 28 p.<br>

...he partings become thicker and are shaly. In places the formation contains no chert, but scattered nodules are not rare, and in a zone 3-5 feet thick 15- ...n northeastern and northwestern Illinois: Illinois State Geological Survey Circular 479, 55 p.

...d from the overlying Ordovician System by a sharp change in lithology, but no erosional or structural evidence of an unconformity is apparent. Similar re ...nd grade into dolomite, the proportion of sandstone diminishes to probably no more than 25 percent in extreme southern Illinois (fig. Є-4). <br>

...sboro Coals. Kosanke et al. (1960) formalized the usage as the Colchester (No. 2) Coal Member. The Colchester Coal was previously called the No. 2 coal in Illinois. Early authors miscorrelated it with the Murphysboro, D

...aphy of the late Pleistocene loesses of Kansas: Journal of Geology, v. 59, no. 4, p. 287-305.<br> ...Stage in the Lake Michigan Glacial Lobe: Illinois State Geological Survey Circular 285, 16 p.<br>

...trata in northern Illinois have been correlated with the Guelph Formation, no Cayugan age strata are recognized in that area. However, the generally acce ...Cairo, La Center, and Thebes Quadrangles: Illinois State Geological Survey Circular 332, 39 p.<br>

...ember boundary as shown on the Quaternary map (Lineback 1979; fig. 5), (2) no significant lithologic difference exists between the diamicton units mapped Roadcuts along Illinois Highway 121, 4 miles (6.4 km) east of Delavan. No longer exposed.

...rrin Coal at the top. Kosanke et al. (1960) formalized the name as Herrin (No. 6) Coal Member in Illinois. Jacobson et al. (1985) extended the Herrin Coa ...e mining industry continue to call this the No. 6 coal in Illinois and the No. 11 coal in western Kentucky. The Herrin does not have a number in Indiana,

...r thick deposits of the silty gray shale that locally overlies the Herrin (No. 6) Coal. In parts of southwestern, western, and eastern Illinois, the Brer ...nnsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.<br>

...ed as indicating that the lower part is uppermost Silurian in age and that no break in sedimentation occurred between the Silurian and Devonian Systems i ...Cairo, La Center, and Thebes Quadrangles: Illinois State Geological Survey Circular 332, 39 p.<br>

Buda East Section, located in a roadcut 5 miles (8 km) east of Tiskilwa. No longer exposed. ...Marseilles till sheet in northeastern Illinois: Journal of Geology, v. 63, no. 3, p. 228-243.<br>

...aphy of the late Pleistocene loesses of Kansas: Journal of Geology, v. 59, no. 4, p. 287-305.<br> ...Stage in the Lake Michigan Glacial Lobe: Illinois State Geological Survey Circular 285, 16 p.<br>

...Although the Neda rests sharply on the underlying Brainard Shale, there is no evidence of an unconformity. The upper contact, however, is sharp and erosi ...Science Transactions, v. 43, p. 176-182; Illinois State Geological Survey Circular 170, p. 176-182.

...Plano Silts: Geological Society of America Abstracts with Programs, v. 17, no. 7, p. 557.<br> ...Stage in the Lake Michigan Glacial Lobe: Illinois State Geological Survey Circular 285, 16 p.<br>

...50, Loess formations of the Mississippi Valley: Journal of Geology, v. 58, no. 6, p. 599-623. (Reprinted as Illinois State Geological Survey Report of In ...ofiles in Illinois, Part 1—Glacial Tills: Illinois State Geological Survey Circular 347, 55 p. <br>

...tigraphic position elsewhere in Illinois; thus, the Peddicord deposits are no longer confined to the Ticona Valley. The sand facies of the Peddicord Form ...ic sequences at Wedron, Illinois: Journal of Sedimentary Petrology, v. 60, no. 1, p. 26-41.<br>

...es range geographically through two thirds of the dimensions of the state, no significant differences have been detected in the character of the accretio ..., Glacial tills of northwestern Illinois: Illinois State Geological Survey Circular 437, 47 p.<br>

...ember boundary as shown on the Quaternary map (Lineback 1979; fig. 5), (2) no significant lithologic difference exists between the diamicton units mapped No longer exposed.

No longer exposed. ...Marseilles till sheet in northeastern Illinois: Journal of Geology, v. 63, no. 3, p. 228-243.<br>

...ntinent areas, this sequence continues upward into the Permian System, but no Permian rocks have been found in Illinois. The basal unconformity separatin ...issippian) surface in the Illinois Basin: Illinois State Geological Survey Circular 458, 14 p.<br>

Wanless (1956) and Kosanke et al. (1960) simply listed the location. No description has been published, and none has been found among the Survey’ ...sec. 30, T 2 S, R 10 E, Edwards County, southeastern Illinois (ISGS county no. 24519). The hole was cored continuously; core was described by W.J. Nelson

...riatus, Polygnathus communis carinus'', and ''Bactrognathus hamatus'', but no diagnostic Kinderhookian species. The conodont ''Gnathodus semiglaber''--'' ...an rocks of the Upper Mississippi Valley: Illinois State Geological Survey Circular 328, 32 p.<br>

...aphy of the late Pleistocene loesses of Kansas: Journal of Geology, v. 59, no. 4, p. 287-305.<br> ...Stage in the Lake Michigan Glacial Lobe: Illinois State Geological Survey Circular 285, 16 p.<br>

The Dutch Creek Sandstone Member has no designated type section. An exposure along a secondary road 1.1 miles north ...imestone (Devonian) of southern Illinois: Illinois State Geological Survey Circular 389, 34 p.<br>

...e hole was drilled in sec. 16, T 3 S, R 2 E, Jefferson County, ISGS county no. 2786. The Anna Shale is 1.9 ft (58 cm) thick and occupies the depth interv ...he Illinois and Midcontinent Basins appears securely established. There is no corresponding named unit in the Appalachian Basin, but marine shale overlyi

...theast of Delafield in sec. 31, T 4 S, R 6 E, Hamilton County (ISGS county no. 25463). The Delafield Member is 74.9 ft (22.8 m) thick and occupies the in ...le Pennsylvanian, of the Illinois Basin: Illinois State Geological Survey, Circular 605, 85 p., 6 pls.<br>

...tigraphic position elsewhere in Illinois; thus, the Peddicord deposits are no longer confined to the Ticona Valley. The sand facies of the Peddicord Form ...ic sequences at Wedron, Illinois: Journal of Sedimentary Petrology, v. 60, no. 1, p. 26-41.<br>

...type area (Figure 4-6), but these pits have been backfilled and exposures no longer exist. The log of hole no. 1 at the Snow Hill Coal Corp.’s Talleydale Mine is hereby offered as a s

...on the La Salle Anticline, these formations are absent and the Colchester (No. 2) Coal at the base of the Carbondale Formation rests directly on the St. ...ed in this part of the basin. Within the Pennsylvanian System in Illinois, no major, widespread unconformities with either large-scale overlaps or struct

...on the La Salle Anticline, these formations are absent and the Colchester (No. 2) Coal at the base of the Carbondale Formation rests directly on the St. ...ed in this part of the basin. Within the Pennsylvanian System in Illinois, no major, widespread unconformities with either large-scale overlaps or struct

...Plano Silts: Geological Society of America Abstracts with Programs, v. 17, no. 7, p. 557.<br> ...Stage in the Lake Michigan Glacial Lobe: Illinois State Geological Survey Circular 285, 16 p.<br>

...es range geographically through two thirds of the dimensions of the state, no significant differences have been detected in the character of the accretio ..., Glacial tills of northwestern Illinois: Illinois State Geological Survey Circular 437, 47 p.<br>

No type section was designated for the Grassy Creek Shale and some of the sect ...dle Devonian strata of southern Illinois: Illinois State Geological Survey Circular 441, 45 p.<br>

No type section has been designated for the Cedar Valley Limestone. ...e of the Devonian Cedar Valley Formation: Illinois State Geological Survey Circular 247, 34 p.<br>

No other name refers to this specific interval of strata. The McCormick Group ...ek contrasts with the overlying [[Carbondale Formation]] (which belongs to no group) and the younger [[McLeansboro Group]], both of which contain many wi

...ed in this part of the basin. Within the Pennsylvanian System in Illinois, no major, widespread unconformities with either large-scale overlaps or struct ...on the La Salle Anticline, these formations are absent and the Colchester (No. 2) Coal at the base of the Carbondale Formation rests directly on the St.

...roe Line: Prepared for the Chicago-Urban Transportation District, Contract no. DOT-UT-863, 39 p.<br> ...Stage in the Lake Michigan Glacial Lobe: Illinois State Geological Survey Circular 285, 16 p.<br>

Stratigraphic test core RBD-7; Red Bud Quadrangle; API no. 121572661600; 3200’ SL, 600’ WL, Sec.8-T4S-R7W, Randolph County, IL. Stratigraphic test core KSP-11; Keyesport Quadrangle; API no. 120272718900; 2800’ NL, 450’ WL, Sec. 11, T2N, R2W, Clinton County, IL

...0 N, R 11 W, Greene County, western Illinois, on the Daum 7.5' quadrangle. No description has been published. Field notes in the ISGS Library indicate th ...shale, dark bluish-gray, noncalcareous, poorly bedded, very slickensided, no fossils.

...roe Line: Prepared for the Chicago-Urban Transportation District, Contract no. DOT-UT-863, 39 p.<br> ...Stage in the Lake Michigan Glacial Lobe: Illinois State Geological Survey Circular 285, 16 p.<br>

...en (1856, No. 1 vertical diagram) introduced the name “Battery Rock coal,” no usage of “Battery Rock sandstone” older than J.M. Weller (1940) has bec ...in the basin. Aside from lateral tracing of sand bodies, the geologist has no ''a priori'' method to identify the Battery Rock in a given outcrop or well

...ed as indicating that the lower part is uppermost Silurian in age and that no break in sedimentation occurred between the Silurian and Devonian Systems i ...Cairo, La Center, and Thebes Quadrangles: Illinois State Geological Survey Circular 332, 39 p.<br>

...Moraine in northeastern Illinois: Journal of Sedimentary Petrology, v. 52, no. 2, p. 473-491.<br> ...Peat Resources in Northeastern Illinois: Illinois State Geological Survey Circular 503, 11 p.<br>

...t appear to be as common as they are in northeastern and central Illinois. No reefs are present in the small area where the Racine is exposed at Grafton ...n northeastern and northwestern Illinois: Illinois State Geological Survey Circular 479, 55 p.<br>

No type section has been designated for the Cedar Valley Limestone. ...e of the Devonian Cedar Valley Formation: Illinois State Geological Survey Circular 247, 34 p.<br>

Roadcut at the intersection of Illinois Highways 71 and 47; no longer exposed. ...ville Till Member, Northeastern Illinois: Illinois State Geological Survey Circular 526, 25 p.<br>

...ois (Kosanke et al. 1960). In western Kentucky, the names Well, Split, and No. 8 coal bed have been used. The name “Well coal” refers to the coal bei ...1 Fritschle test hole in sec. 20, T 6 N, R 9 E, Jasper County (ISGS county no. 25354) is designated as a reference section for the Survant Coal Member (F

...ic sequences at Wedron, Illinois: Journal of Sedimentary Petrology, v. 60, no. 1, p. 26-41.<br> ...ublobe, east-central Illinois: Geology Society of America Bulletin, v. 97, no. 9, p. 1098-1105.<br>

...osure at a bridge excavation site, 4 miles (6.4 km) southwest of Equality; no longer exposed. ...rd from deep lacustrine sediments: Journal of Great Lakes Research, v. 20, no. 1, p. 73-92.<br>

No longer exposed. ...ville Till Member, Northeastern Illinois: Illinois State Geological Survey Circular 526, 25 p.<br>

...Moraine in northeastern Illinois: Journal of Sedimentary Petrology, v. 52, no. 2, p. 473-491.<br> ...Peat Resources in Northeastern Illinois: Illinois State Geological Survey Circular 503, 11 p.<br>

...ian glacial boundary in western Illinois: Illinois State Geological Survey Circular 364, p. 28.<br> ...1946b, Preglacial erosion surfaces in Illinois: Journal of Geology, v. 54, no. 3, p. 179-192.<br>

...ic sequences at Wedron, Illinois: Journal of Sedimentary Petrology, v. 60, no. 1, p. 26-41.<br> ...ublobe, east-central Illinois: Geology Society of America Bulletin, v. 97, no. 9, p. 1098-1105.<br>

No longer exposed. ...rd from deep lacustrine sediments: Journal of Great Lakes Research, v. 20, no. 1, p. 73-92.<br>

...and Mazon Creek biota: Illinois State Geological Survey, Guidebook Series No. 8, 125 p.<br> ...nsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey, Circular 217, 14 p.<br>

...t appear to be as common as they are in northeastern and central Illinois. No reefs are present in the small area where the Racine is exposed at Grafton ...n northeastern and northwestern Illinois: Illinois State Geological Survey Circular 479, 55 p.<br>

...byville Moraine at Shelbyville, Illinois: Illinois State Geological Survey Circular 459, 23 p.<br> ...ic sequences at Wedron, Illinois: Journal of Sedimentary Petrology, v. 60, no. 1, p. 26-41.<br>

...ian glacial boundary in western Illinois: Illinois State Geological Survey Circular 364, p. 28.<br> ...1946b, Preglacial erosion surfaces in Illinois: Journal of Geology, v. 54, no. 3, p. 179-192.<br>

Owen (1856, No. 1 vertical section) first observed this unit and named it the Battery Rock ...n Rock, Dekoven, and Repton Quadrangles: Illinois State Geological Survey, Circular 342, 43 p., 2 pls., 1 map sheet, 1:24,000.<br>

...byville Moraine at Shelbyville, Illinois: Illinois State Geological Survey Circular 459, 23 p.<br> ...ic sequences at Wedron, Illinois: Journal of Sedimentary Petrology, v. 60, no. 1, p. 26-41.<br>

...pit along Illinois Highway 29, 2 miles (3.2 km) north of Henry, Illinois; no longer exposed. ...Peat Resources in Northeastern Illinois: Illinois State Geological Survey Circular 503, 11 p.<br>

...ms of stages, Rexroad and Merrill (1985) interpreted the faunas as showing no break in deposition across the systemic boundary. At the same locality, Wei ...t extreme macrotidal estuaries: Journal of Coastal Research, Special Issue No. 43, Tidal Dynamics and Environment, p. 4–22.<br>

No longer exposed. ...Peat Resources in Northeastern Illinois: Illinois State Geological Survey Circular 503, 11 p.<br>

...a were entirely eroded before the Middle Devonian limestone was deposited. No major unconformities are recognized within the Silurian System, although sh ...n northeastern and northwestern Illinois: Illinois State Geological Survey Circular 479, 55 p.<br>

...a were entirely eroded before the Middle Devonian limestone was deposited. No major unconformities are recognized within the Silurian System, although sh ...n northeastern and northwestern Illinois: Illinois State Geological Survey Circular 479, 55 p.<br>