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BEDROCK GEOLOGY of GRANITE CITY QUADRANGLE Rod R

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BEDROCK GEOLOGY of GRANITE CITY QUADRANGLE Rod R BEDROCK GEOLOGY OF GRANITE CITY QUADRANGLE Rod R. Blagojevich, Governor MADISON AND ST. CLAIR COUNTIES, ILLINOIS Department of Natural Resources Joel Brunsvold, Director AND ST. LOUIS COUNTY, MISSOURI Illinois State Geological Survey William W. Shilts, Chief F. Brett Denny 2003 Mississippian Myra Yankeetown and Renault Chesterian Mississippian Mississippian Mvu Ste Genevieve and St. Louis Valmeyeran Petroleum and Coal Resources of Madison County (Resources have been removed) Line symbols: dashed where inferred Macoupin County 375 Fault: ball and bar on downthrown side Madison County Contact 475 Bedrock topography (elevation in feet) Granite City Quadrangle Mvu 81 Engineering boring (depth in feet) 78 Water well (depth in feet) St. Clair County Dry oil test (depth in feet) 1:500,000 2085 350 Oil and gas fields Coal mine area (coal has been removed) 2085 Oil test, show of oil (depth in feet) 81 117 95 ST LOUIS FAULT ZONE 64 92 80 93 74 Introduction and represent a near-shore, higher energy Structural Geology 2816 66 95 depositional system than the underlying micritic and 96 Bedrock Geology of Granite City Quadrangle is part cherty St. Louis Limestone. The Ste. Genevieve may The St. Louis Fault Zone was projected into the 87 92 of a statewide 1:24,000 scale geologic mapping also contain a fine-grained calcareous sandstone bed Granite City Quadrangle based on bedrock geologic 86 1000 103 program by the Illinois Department of Natural that is called the Spar Mountain Sandstone. The type map by Harrison (1997). The St. Louis Fault Zone 74 114 Resources (State Geological Survey). This geologic section for the Spar Mountain is in southeastern was originally named by Frank (1948) who was the 73 map was funded in part through a grant by the United Illinois, over 100 miles away from this quadrangle. first to suggest the flow of the Mississippi River in 2085 States Geologic Survey. Geologic maps may aid in This sandstone unit, therefore, may not correlate this area was controlled by faults. Frank stated that the exploration for economic minerals including with the Spar Mountain and may be related to inter- the St. Louis Fault was a normal fault with dip slip coal, petroleum, and natural gas and may facilitate tonguing with the overlying Aux Vases Sandstone down to the west. Harrison suggested that the St. regional planning. (Willman, et.al., 1975). Louis Fault Zone is a right-lateral, strike-slip fault with strata offset down to the western side of the The Granite City 7.5' Quadrangle is just east of St. Wells records from the southeastern portion of the fault. The structure is better developed southwest of Louis, Missouri. The quadrangle lies on the western map indicate, shale, sandstone, and limestone of the the study area, but Harrison (1997) projects the fault portion of the Illinois Basin in the Metro East St. Yankeetown, Renault, and Aux Vase Formations are zone into the northwestern part of the Granite City Louis area. Bedrock does not outcrop on the Illinois present. Without additional drilling in this area, a Quadrangle. Harrison also suggests that the two portion of this quadrangle. Holocene and precise subcrop of these Chesterian units is difficult small earthquakes that registered 3.1 and 2.4 mq Quaternary units along the flood plain of the to project, and an accurate portrayal of these occurred along the St. Louis Fault Zone. This was Mississippi River cover the entire Illinois portion of individual units on the map is impossible. These the only indication of structure in the quadrangle. the map. This surficial material ranges in thickness units are also dipping easterly; therefore, this from less than 50 feet near the Chain of Rocks Canal package of rocks thin westerly and is not recognized The regional dip is projected from subsurface cross on the west portion of the map to approximately 125 west of this quadrangle. sections in the area to be easterly at 1 to 2 degrees. feet along the eastern half. The Illinois portion of Strike is north-south and may trend slightly north- the quadrangle is underlain by the Ste. Genevieve The Aux Vases Sandstone is fine to very fine grained northesterly where not effected by the St. Louis Fault Limestone and St. Louis Limestone throughout the calcareous sandstone to siltstone. Dark gray to green Zone. majority of the quadrangle. shales and siltstone are locally present and limestones have been described within this References Several data sources have been used to construct this formation. In adjacent quadrangles this unit is 102 map. Well records from files of the Illinois State commonly a sandstone and shale. This unit is Frank, A.J., 1948, Faulting on the northeast flank of Geological Survey were the primary source of data. unconformable with the underlying units. the Ozarks (Missouri) [abs.]: Geological No bedrock outcrops were observed in the Illinois Society of America Bulletin, v. 59, no.12, portion of this quadrangle. All Quaternary and The Renault Formation is composed of a thin, p.1322. 325 Holocene units have been removed from the map to relatively pure coarse-grained limestone that may be Grimley, in prep., Surficial Geologic Map of the portray the bedrock geology. Bedrock topographic cross bedded and oolitic. The oolites may be pink, Granite City 7.5 Minute Quadrangle, Illinois surface contours at 25 feet intervals were generated light green or white and in part the formation may be State Geological Survey, Champaign, and overlain on the geologic map. An estimate of sandy at the base. Illinois, Illinois Geologic Quadrangle Series unconsolidated or surficial material thickness may (IGQ), Granite City-SG. be estimated by subtracting the bedrock topography The Yankeetown Formation is commonly sandstone, Harrison, R.W., 1997, Bedrock Geologic Map of the elevations from the surface elevations on the white to light gray to greenish-gray, fine- grained, St. Louis 30'X60' Quadrangle Missouri and topographic base map. and sub-angular to angular. In this and adjacent Illinois, U.S. Geological Survey map I-2533. quadrangles, the top of the unit commonly is cherty Willman, H.B., et al., 1975, Handbook of Illinois Stratigraphy and contains greenish-gray to red variegated shales. Stratigraphy, Illinois State Geological Survey, Champaign, Illinois, Bulletin 95, The oldest bedrock units sub-cropping beneath the Economic Resources 261 p. surficial sediments is the Mississippian-age St. Louis 110 Limestone. The St. Louis consists of lime-mudstone Oil and algal limestones, but the whiter units are coarsely fossiliferous and contain brachiopods, bryozoans, Two oil tests have been made in the quadrangle. One coelenterates, and echinoderms. Limestone breccia of the wells (24-3N-10W) produced a show of oil in and conglomerates are also present and sometimes the Ordovician (Kimmswick Limestone). Oil is are associated with glauconite and dolomite. The St. produced from several areas in the surrounding Louis commonly contains a few gray shale layers quadrangles (see inset map) and undiscovered 300 separating 5 to10-foot thick limestone beds. Gray to accumulations of oil may be present in this Mvu blue gray chert is present as thin lenticular layers to quadrangle. nodules. The St. Louis is fossiliferous with brachiopods and corals being most abundant. Sand and Gravel The overlying Ste. Genevieve Limestone is very Sand and gravel deposits may be available in similar in character to the St. Louis but may be overlying surficial deposits in the Illinois portion of differentiated by the presence of oolitic to peloidal the quadrangle (See Grimley, in prep. for more 300 limestones. The oolitic units may be cross bedded information.) Myra N M O S I T E 117 E A. Yankeetown Sandstone and Renault Limestone: Yankeetown Sandstone: sand, shale, and chert. This unit I P T T I I R R S MEMBER N contains very fine grained quartz- rich sand that can be white, red, and gray green. In places it has been silicified and FORMATION C E U Y and Bed GRAPHIC COLUMN S has preserved as chert. Common sedimentary structure is stacked ripple bedded cherts that on close inspection yield S S E D very fine angular quartz sand. Shale is typically red claystone at the top of the unit but can also be variegated with greens and grays. This formation can grade into the underlying limestone.; Renault Limestone: limestone, sandy 128 d e t limestone, and limestone conglomerate. Limestone is light to medium gray containing oolites and fossils and c i 117 p diagnostic red crinoids. Mainly composed of packstones and grainstones this limestone is dominated by pelmatozoa. p Quaternary and e a d Quartz sand is found within this limestone and in places carbonate conglomerates occur at the base. m t Holocene units not 50 - 130 o n n o s depicted on map t i B. Aux Vases Sandstone: sand and shale. This unit contains a clean, white, well sorted, quartz arenite that shows n U crossbedding and current ripples. Green shales and green clay drapes occur near the upper part of the sandstone. The Yankeetown lower part of the sand is calcareous and can be locally unconformable with the underlying unit. Renault 0-20 A Base map compiled by Illinois State Geological Survey from digital data provided by the SCALE 1:24 000 Geology based on fieldwork by F. Brett Denny, 2003. Aux Vases 0-10 C. Ste. Genevieve Limestone: limestone and sand. Limestone containing oolites and crinoids are abundant. Oolitic United States Geological Survey. Topography compiled 1933. Revised and updated 1 1/ 2 0 1 MILE Chesterian 0-40 B crossbedded grainstones or oosparites are found in the upper parts of the formation. These limestone beds are light from imagery dated 1998. Digital cartography by F.
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