DOCSLIB.ORG

Bedrock Aquifer Systems of Vigo County, Indiana

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Bedrock Aquifer Systems of Vigo County, Indiana Mitchell E. Daniels, Jr., Governor Department of Natural Resources Division of Water Robert E. Carter, Jr., Director Aquifer Systems Map 66-B BEDROCK AQUIFER SYSTEMS OF VIGO COUNTY, INDIANA R. 10 W. R. 9 W. R. 9 W. R. 8 W. R. 8 W. R. 7 W. T. 14 N. T. 14 N. T. 13 N. Atherton A r c T. 13 N. h e Creek E r n Libertyville 2 S 4 g Brouilletts t l 4 3 2 1 6 5 3 2 e 150 1 5 4 S 3 1 6 6 Shepherdsville t Shirkieville l k 5 a o N n orth o r S a l alt C Bell Ave P r e B e C k r e e e 41 s i u l u r 3 o 6 B E h k d R n h Coal n u S 8 8 tc F 9 a 7 9 i Bluff 11 12 11 12 D 10 7 10 y 11 12 7 9 h d 8 New s un 10 a G Gibbs Ave Goshen b r a e v W i d R R tle h as as nc Fontanet e L b re a G u W c Watt Ave a 16 s 16 18 17 15 14 17 S 13 16 15 15 14 13 17 14 t 13 18 18 Rio Grande Ave Sandcut d C R 21 24 s 23 oa 19 21 22 23 24 19 e 23 l 20 21 n 24 22 C 20 o 22 19 r J 20 Wright Ave ee L k o n g d R R d t o E rr a a Sandford st P L it 30 26 Burnett 27 t d Sanford Rd 26 le 25 R 26 S 28 27 25 27 30 u e 25 28 29 l 30 29 28 g a W a d 29 r e s o C o l r O f e t R C e te r k r Davis Ave Ehrmandale e C k e r e Y k ee e um k r a C R r d e 35 tt 33 32 O 34 35 31 33 34 31 32 35 36 33 34 31 32 36 36 Bolton Rd Sulphur Creek North Terre Haute T. 13 N. T. 12 N. T. 13 N. Green Valley T. 12 N. E State Fishing Area St Mary-of-the-Woods g a 4 n Debney Ave 2 S 1 6 5 3 2 1 6 3 2 1 4 t 5 4 3 d R t d r a h n r H a B u n t W 12 7 8 S l 9 10 9 10 11 11 12 t 7 e P 7 8 9 10 11 12 Tri-Land s e t L w o Estates Lake Marion L w o i e H tt r G Heights l S a e a n Seelyville n n Old Maple Ave S d o u f n g o R r 40 a d d L r R 3 o 6 s d Ferguson t C Cr Little Grassy Pond re R ee East Hill S 16 e 16 15 14 13 k Game Management Area Seelyville Ave 15 k 14 13 18 Glenn 15 18 17 17 16 14 13 Liggett Hulman Izaak Lodge Lake Glen Ayr Walton Lake k 6 21 21 22 ee 21 S r 20 22 24 4 ug 19 20 22 ar C 23 19 23 Llewellyn 23 24 24 R S Lake West Terre Haute Terre Haute SR 42 2 Swalls 4 3 R S 28 27 26 40 29 28 27 26 25 30 26 25 25 30 29 28 27 Clear Creek 70 South 31 F r 35 36 y 33 33 34 35 36 31 32 33 34 Lake e 35 36 34 70 32 S t r D n i a T. 12 N. l Margaret Dr C T. 12 N. c T. 11 N. l P T. 11 N. 1 M b a o J 4 3 2 6 L 6 5 3 i 5 4 3 2 4 1 g 1 2 h t R d Moyer Dr S tone Quar J ry k e e 12 Bland Dr e f B 12 r f r 11 12 C 7 8 9 10 e 11 a 9 10 7 8 9 10 11 r nc y s h e n S o t H e ttl Li 1 0.5 0 1 Mile 16 15 18 k 14 13 18 17 16 15 14 e 15 13 re 16 14 C 17 13 Honey Ryman Dr Allendale 1 0.5 0 1 Kilometer Gross Rd SR 46 Riley iver abash R W 9 H 21 23 24 19 20 22 19 20 5 o 1 22 n 21 23 24 21 23 24 22 e y R C S r e e k Curry Dr Woodsmall Dr l P h Prairieton C c l s i n o g D 26 e 29 r 28 27 30 m 28 27 26 25 28 27 26 25 30 29 25 a n S t Dallas Rd Youngstown l P M h n Keller c g o D s u i a o d l n S E i th e r 36 31 36 l 32 33 32 33 35 o 34 R 31 33 34 yw 34 35 35 36 Ha d Wonder 32 Lake T. 11 N. Harlan Dr T. 10 N. Harlan Dr T. 11 N. T. 10 N. Paint R S u i s n Mill Lake h g S h t 2 1 u u 6 5 4 3 2 5 r 4 2 o 1 1 5 4 3 s 3 y t 6 S 1 a 6 k t B e e r d C l Pincher Dr Oregon Church Rd ie ie ir f a Owl Creek n r e P e r G French Lake 12 l 10 12 P 12 7 10 11 11 7 8 9 11 8 9 10 e 8 9 150 l 7 12 a ek H Strip Lake re 11 C 41 nge Sutliff Dr plu L S a f Hutton l o Little Dr P r g l d e P o S o n l l t a 15 b P 14 g 14 13 16 15 e Cutsinger Dr 14 r 13 Blackhawk Dr 18 k 18 17 u o c r o T 17 16 M d Pimento 13 18 16 15 14 13 d 17 Blackhawk 15 a P Evans Dr ek 22 re u C l n o P a y o a m v k r B e B e l u r Bowen Dr r P e i e P 24 r T g 21 Tryon 24 e Dr 23 19 S 20 21 22 23 24 g 19 20 k n C 23 21 22 n 23 s r i 19 R 24 y 20 e 22 a d k i S l a r e t n i 1 P C e a e x r r 5 O 9 P C French Dr Vigo C 3 u m 6 m R A i n S Oxendine D n l r s 25 l v 30 o 27 26 25 30 28 S i 26 29 28 27 25 30 29 r 27 29 l 26 28 26 t 25 l e e s R s d u Pierson Rd B Middletown Dr SR 246 r Prairie e F v a l i Creek D r l m P i R P c e Gobin Dr e 35 k 36 l 33 31 n Hampton Dr 36 h r r 34 35 36 31 e 35 a 34 35 s Harrold Dr s a 36 31 n 32 b 32 33 34 v 32 i a s E u l 33 l r b S g u a t S S W t T. 10 N. Lewis T. 9 N. T. 10 N. T. 9 N. R. 11 W. R. 10 W. R. 10 W. R. 9 W. R. 9 W. R. 8 W. R. 8 W. R. 7 W. The occurrence of bedrock aquifers depends on the original composition of the geologic material and subsequent changes which influence the hydraulic properties. Post- Pennsylvanian -- Carbondale Group Aquifer System depositional processes, which promote jointing, fracturing, and solution activity of exposed bedrock, generally increase the hydraulic conductivity (permeability) of the upper portion of bedrock aquifer systems. Because permeability in many places is The Carbondale Group Aquifer System subcrops throughout much of Vigo County. The greatest near the bedrock surface, bedrock units within the upper 100 feet are commonly group consists in ascending order of the Linton, Petersburg, and Dugger Formations. the most productive aquifers. Bedrock deposits include mostly shale and sandstone with some limestone and commercially important coal. Thickness of the Carbondale Group in Vigo County ranges Bedrock aquifer systems in the county are overlain by unconsolidated deposits ranging up to 350 feet. from less than one foot up to150 feet thick. The unconsolidated sand and gravel outwash aquifers near the Wabash River have far greater groundwater potential than any of the Depth to the bedrock surface is typically from 25 to 75 feet and well depths generally bedrock aquifers. However, bedrock aquifers are widely used in Vigo County where range from 70 to 200 feet.
Load more

Recommended publications
  • Bedrock Geology of Edwardsville Quadrangle
    Rod R. Blagojevich, Governor BEDROCK GEOLOGY OF EDWARDSVILLE QUADRANGLE Department of Natural Resources Joel Brunsvold, Director MADISON COUNTY, ILLINOIS Illinois State Geological Survey William W. Shilts, Chief Joseph A. Devera and F. Brett Denny 2003 BUNKER HILL 12 MI. 2 000m. 2 2 2 2 2 2 2 90°00' 40 E. 41 42 1.6 MI. TO ILL. 140 57' 30" 44 45 R. 8 W. 46 R. 7 W. 55' 48 49 580 000 FEET 89°52'30'' 38°52'30" 38°52'30" 159 Psb 400 Eberhart Cem St James Cem 4306 21 22 23 24 19 20 21 4306000m.N. HENKE LANDING STRIP 375 Psb Shelburn Formation 400 350 Pennsylvanian Desmoinsian ek 800 000 re C FEET Pcb Carbondale Formation Gard Pcb 400 I M Quercus Grove 4 Maple . 2 Cem L E 157 M A Quercus Grove H Park 4305 Line symbols: dashed where inferred Petroleum and Coal Resources a h i c 26 k 28 n o a h of Madison County 27 r a C 25 B Barnett (Resources have been removed) 30 29 Contact 375 28 43 Macoupin County 04 475 Bedrock topography (elevation in feet) Madison County 325 350 4304 325 Coal test (depth in feet) Oil test, dry hole (depth in feet) s Golf gh ou Course rr u 43 Oil test, show of oil (depth in feet) B 03 . I . I 33 M 35 M 2 7 1 2 N 36 31 D O 34 32 L Edwardsville T Mine shaft, abandoned E 33 I . S I F G M H Quadrangle N I C 5 V T I I .
    [Show full text]
  • New Member Names for the Lower Silurian Hopkinton Dolomite of Eastern Iowa
    Proceedings of the Iowa Academy of Science Volume 90 Number Article 4 1983 New Member Names for the Lower Silurian Hopkinton Dolomite of Eastern Iowa Markes E. Johnson William College Let us know how access to this document benefits ouy Copyright ©1983 Iowa Academy of Science, Inc. Follow this and additional works at: https://scholarworks.uni.edu/pias Recommended Citation Johnson, Markes E. (1983) "New Member Names for the Lower Silurian Hopkinton Dolomite of Eastern Iowa," Proceedings of the Iowa Academy of Science, 90(1), 13-18. Available at: https://scholarworks.uni.edu/pias/vol90/iss1/4 This Research is brought to you for free and open access by the Iowa Academy of Science at UNI ScholarWorks. It has been accepted for inclusion in Proceedings of the Iowa Academy of Science by an authorized editor of UNI ScholarWorks. For more information, please contact [email protected]. Johnson: New Member Names for the Lower Silurian Hopkinton Dolomite of Eas Proc. Iowa Acad. Sci. 90(1): 13-18, 1983 New Member Names for the Lower Silurian Hopkinton Dolomite of Eastern Iowa MARKES E. JOHNSON Department of Geology, Williams College, Williamstown, Massachusetts 01267. Previously divided primarily on the basis of paleontologic units, the approximately 60-80 m thick Hopkinton Dolomite in eastern Iowa also comprises a set oflithologically unique subunits. With the development of a new capability for inter-regional correlation of Lower Silurian strata based on the use of sea-level curves, it is especially appropriate to recognize these subdivisions of the Hopkinton Dolomite as formal member units. Locally, the relationships shown by these units may also contribute to a better understanding of the Plum River Fault Zone and its associated structures in Iowa and Illinois.
    [Show full text]
  • (A) Placement Above Uppermost Aquifer
    AECOM 502-569-2301 tel 500 W Jefferson St. 502-569-2304 fax Suite 1600 Louisville, KY 40202 www.aecom.com October 17, 2018 Big Rivers Electric Corporation Sebree Generating Station 9000 Highway 2096 Robards, Kentucky 42452 Engineer’s Certification of Placement Above the Uppermost Aquifer Existing Green CCR Surface Impoundment EPA Final CCR Rule Sebree Station Robards, Kentucky 1.0 PURPOSE The purpose of this document is to certify that the Placement above Sebree “Green” Existing CCR Surface Impoundment is in compliance with the Placement above the Uppermost Aquifer requirement of the Final CCR Rule at 40 CFR §257.60. Presented below is the project background, summary of findings, limitations and certification. 2.0 BACKGROUND In accordance with 40 CFR §257.60, the owner/operator of an existing CCR Surface Impoundment must demonstrate that the base of the unit is located no less than 1.52 meters (five feet) above the upper limit of the uppermost aquifer, or must demonstrate that there will not be an intermittent, recurring, or sustained hydraulic connection between any portion of the base of the CCR unit and the uppermost aquifer due to normal fluctuations in groundwater elevations (including the seasonal high water table). In accordance with 40 CFR §257.60(c)(1), the demonstration must be made by October 17, 2018. If such demonstration cannot be made, the unit is subject to the closure or retrofit requirements of 40 CFR §257.101 3.0 SUMMARY OF FINDINGS Available data regarding site groundwater, site geology, and physical limits of the unit for the Green Surface Impoundment do not evidence a 5-foot separation between the base of the impoundment and the uppermost limit of the uppermost aquifer and they do not support a lack of hydraulic connectivity between the unit and the aquifer as specified in 40 CFR §257.60(a).
    [Show full text]
  • Detailed Sedimentological Study of the West Franklin Limestone Member
    Detailed Sedimentological Study of the West Franklin Limestone Member (Desmoinesian to Missourian) of the Shelburn Formation (Upper Pennsylvanian) of southwestern Indiana Grace L. Stone and William S. Elliott, Jr. Department of Geology and Physics, University of Southern Indiana, 8600 University Blvd., Evansville, Indiana 47712; [email protected] Introduction Results Discussion The West Franklin Limestone is a key marker bed in correlating Middle to Upper Southwest Indiana is underlain by gently, westward dipping (2° to 3°) Middle to Upper Photomicrograph of skeletal 76.4 to 76.9 feet depth: tan to gray, Pennsylvanian strata in the Illinois Basin (Wier & Ault, 1986; Brown & Rexroad, 2009). It is Pennsylvanian strata on the southern margin of the Illinois Basin consisting of recurring packstone showing broken bioturbated, skeletal packstone with typically identified by two limestone benches separated by an interval of siliciclastic deposits of limestone, sandstone, shale, and coal (Fig. 1). USI 1-32, an exploratory USI 1-32 Core Upper Bench of skeletal fragments that include, broken crinoid, brachiopod, sediment, but the number of benches is variable from the absence of the limestone to four coalbed methane well drilled in 2009, is located at 37.951° N and 87.670°W south of 75 bryozoans, gastropods, forams, West Franklin bryozoan, and gastropod fossils with discrete limestone intervals (Anderson, 1956; King, 1994; Heckel et al., 1998; Rexroad et al., the campus of the University of Southern Indiana in Vanderburgh County, Indiana (Fig. and algae, with a micrite mud traces of disseminated pyrite. 2008; Gray, 2011). 2). The total depth of the well is 780 feet with a core recovered from the West Franklin Limestone matrix from 76.45 feet depth.
    [Show full text]
  • Affected Environment 4
    Section 4 AFFECTED ENVIRONMENT 4. Affected Environment 4.0 Affected Environment The study corridor used to identify various resources within the program’s affected environment is comprised of the seven sections described in Chapter 3, Section 3.3.7.1 and illustrated in Exhibit 3.3‐10. Depending on the resource and the available information collected, the width of the study corridor ranges from 100 feet to the counties in which the study corridor traversed. The study corridors are described in each of the resource sections. 4.1 Existing Land Use 4.1.1 Development Patterns Historically, Chicago and St. Louis have served as major continental transportation centers, both tracing their origins to water and rail transportation routes. Chicago prospered from its strategic location on Lake Michigan and access to eastern markets through the Erie Canal and the Great Lakes. St. Louis originally developed from its role as a port on the Mississippi River that provided access to domestic and foreign markets. During the 19th Century, the addition of railroads linking these cities forged an economic lifeline between Chicago and St. Louis. Construction of the rail network spawned the growth of numerous communities that served as regional centers for the collection and distribution of goods for a rich agricultural region. The influence of the railroad remained strong until interstate highways joined the transportation system in the 1950s and 1960s. In contrast to the railroads, which created new communities along their length to maintain and support the railroads, interstate highways were constructed around, and often bypassed some communities. Because the interstates had limited points of access, county roads that connected with or crossed over them linking existing communities, became particularly important to the rural areas.
    [Show full text]
  • Welge-Bg.Pdf (2.59
    BEDROCK GEOLOGY OF WELGE QUADRANGLE Illinois Department of Natural Resources Illinois Geologic Quadrangle Map ILLINOIS STATE GEOLOGICAL SURVEY RANDOLPH AND JACKSON COUNTIES, ILLINOIS IGQ Welge-BG William W. Shilts, Chief W. John Nelson 2007 Mk & e" 175 e" 84 sm o3 h &cv 164k" 170 k" k" 262 ^ ^ þ þüþü þ 2o o &c &s 250 h o 3 250 9 970 e" &cv -1 351e" Sª 00 136 k820 200 k" &t 62 k" 1 5 0 5 -5 N 0 J N 1 123 0 N J 757 0 e" J N N 0 J J N ª J N 0 350 J N oN J k" 87 k" Mc J S 377N 45 J k" 162 136 Mk NJ 165 N k 161 e" e" J 226 N J e" k" N S 677 J k Mk 161 145k" k"161 GS S 849 398 163 N 250 N 55 e" J k k J e" e" e" 142 k"164 172 S 395 143 k" Md S 411 i N k"142 J N N 130 k" ª J J NJ NJ NJ N N S J J N N 486 J J NJ N N J J NJ N 300 ª J N MASTER FAULT, J N &t k"46 COTTAGE GROVE FAULT SYSTEM J NJ N 205 Md 143 J 250 135 k" S k" k" N k" 41 k" k372 J 103 NJ 20 164 " 104 k k" N 0 15 J e" 248 0 EXPLANATION 150 e" e" 138 256 160 e" 5 k" 204k" k" 10 0 449 201 k" 0 350 k" 60 225 k" k"123 211 182 k" J N &cv sm Surface-mined area " k" 142 133 e k" 122 ª 150 k" 150 610 k" 150k" N e" J k" 200 &s Shelburn Formation 205 N k" J 136 k" 15 k" 0 146 142 Mk k" 282 h N k" S J 151e" ª k"153 k" &c Carbondale Formation 759 190 Desmoinesian J G 2165 N N Ü Mp J ª h, Herrin Coal Member N Mc 258 Pennsylvanian J k" N J k"123 N J J &t Tradewater Formation N &cv N J N J &cv N Md 205 J Unconformity k" N 25 J e"175 Md J N 0 J N N N J Morrowan J &cv Caseyville Formation Mps 30 Md N 730 k" J J o G N 152 N J k" N Unconformity N J J 110 " Sk e" k e" S 154 202 " k"164 S 724 e" k k" 129
    [Show full text]
  • Bedrock Geology of Bethalto Quadrangle
    BEDROCK GEOLOGY OF BETHALTO QUADRANGLE Department of Natural Resources Illinois Preliminary Geologic Map ILLINOIS STATE GEOLOGICAL SURVEY MADISON AND MACOUPIN COUNTIES, ILLINOIS IPGM Bethalto-BG William W. Shilts, Chief Joseph A. Devera 2004 Introduction the Tradewater, Carbondale, and Shelburn Formations. Much of the post- Oil and Gas ��� ������������������ Mississippian erosional surface was infilled by the Tradewater Formation and Numerous oil tests drilled in the Bethalto Quadrangle were all dry and ������������ Bedrock Geology of Bethalto Quadrangle was prepared as part of a statewide ranges from 35 to 120 feet thick across the area. The depositional environment abandoned. A well drilled in 1943 in NE NW Sec. 23, T6N, R9W had shows of 1:24,000 scale geologic mapping program by the Illinois State Geological ��� ������������� ��� �������������������� initially was fluvial, but it contains indications of marine reworking at the top, as oil in the oolitic zone of the Ste. Genevieve Limestone, oil stains in the lower � 50 ��� Survey (ISGS). This map was funded in part through a contract with the United evidenced by tidal rhythmites. During the deposition of much of the Carbondale dolostone of the St. Louis Limestone, and a show of oil in a Devonian limestone ��� States Geological Survey. Bedrock geologic maps may aid in exploration for Formation, the area was fairly low, flat, and swampy. The depositional at 1,169 feet (total depth was 1,174 feet). Other tests in 1945 in Section 23 and ���� economic minerals including coal, petroleum and natural gas, and may facilitate 34 �� �������������������� ������ environment of the Shelburn was similar to that of the Carbondale. had similar multiple shows, but all were dry and abandoned.
    [Show full text]
  • Geologic Names of North America Introduced in 19364955
    Geologic Names of North America Introduced in 19364955 ^GEOLOGICAL SURVEY BULLETIN 1056-A Names of North America Introduced in 1936-1955 By DRUID WILSON, WILLIAM J. SANDO? and RUDOLPH W. KOPF Prepared with the assistance of BARBARA BEDETTE, JEAN L. EGGLETON, GRACE C. KEROHER, CAROLYN MANN, WILLIAM G. MELTON, JR., KATHERINE DENNISON PALMER, and JACK E. SMEDLEY GEOLOGIC NAMES OF NORTH AMERICA -G E O L O G I C AL SURVEY BULLETIN 1056-A A compilation of new geologic names of North America, including Greenland, the finest Indies, the Pacific Island pos­ sessions of the United States, and the Trust Territory of the Pacific Islands UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1957 UNITED STATES DEPARTMENT OF THE INTERIOR FRED A. SEATON, Secretary GEOLOGICAL SURVEY Thomas B. Nolan, Director ' For sale by the Superintendent of Documents, U. S. Government Printing Office Washington 25, D. C. - Price $1. (paper cover) FOEEWOBD The "Lexicon of geologic names of the United States" by M. Grace Wilmarth, published in 1938 and reprinted in 1951 and 1957, met a long standing need and continuing demand for a compilation of geologic names. Plans made for future compilations as new names and revisions appeared were interrupted during the years of World War II. In 1952 a sustained effort was begun toward review of geo­ logic publications necessary to furnish a background for preparation of a new edition. After the review was brought up to date in 1956, the present compilation was prepared in order to furnish to the geo­ logic profession, as quickly as possible, some of the essential data concerning the new names that have appeared since 1935.
    [Show full text]
  • Geologic Overview
    Chapter C National Coal Resource Assessment Geologic Overview By J.R. Hatch and R.H. Affolter Click here to return to Disc 1 Chapter C of Volume Table of Contents Resource Assessment of the Springfield, Herrin, Danville, and Baker Coals in the Illinois Basin Edited by J.R. Hatch and R.H. Affolter U.S. Geological Survey Professional Paper 1625–D U.S. Department of the Interior U.S. Geological Survey Contents Coal Formation ..................................................................................................................................... C1 Plant Material ............................................................................................................................. 1 Phases of Coal Formation ......................................................................................................... 1 Stratigraphic Framework of the Illinois Basin Coals ..................................................................... 1 Raccoon Creek Group ............................................................................................................... 4 Carbondale Formation or Group ............................................................................................... 6 McLeansboro Group................................................................................................................... 6 Structural Setting ............................................................................................................................... 6 Descriptions of the Springfield, Herrin, Danville, and
    [Show full text]
  • BEDROCK GEOLOGY of PRAIRIETOWN QUADRANGLE As A
    BEDROCK GEOLOGY OF PRAIRIETOWN QUADRANGLE Department of Natural Resources Illinois Preliminary Geologic Map ILLINOIS STATE GEOLOGICAL SURVEY MADISON AND MACOUPIN COUNTIES, ILLINOIS IPGM Prairietown-BG William W. Shilts, Chief F. Brett Denny Introduction ���������������������������� 2004 Bedrock Geology of Prairietown Quadrangle was prepared as part of a statewide 1:24,000-scale �� geologic mapping program by the Illinois State Geological Survey (ISGS). This geologic map was funded in part through a contract with the United States Geological Survey. Bedrock geolog- ��� ��� ��� ��� ���������������� ���������� ic maps may aid in the exploration for economic minerals including coal, petroleum, and natural ��� ��� gas and may facilitate regional planning by locating groundwater resources and aggregate materi- als for infrastructure support. ��� ��� ������������������ ��� ��� ������������� ����������� Several data sources have been used to construct this map. Well records from files of the ISGS ���� were the primary source. Most data locations are shown on the map sheet, but locations from ��� ��� ��� �������������������� ��� several confidential records used to construct the geologic and structural contour maps are not shown. In addition, bedrock outcrops were observed along the east side of Sherry Creek (Secs. 6 ��� ���� ������������������ � and 7, T6N, R7W). ��� ��� ��� Bedrock topographic surface contours at 25-foot intervals were generated and overlain on the �� �������������������� ������ geologic map. Unconsolidated or surficial material thickness may be estimated by subtracting ��� bedrock elevations from surface elevations on the topographic base map. ������������ ��� ��� ��� ���������� Economic Geology ��� ��������������������������� ��� ��� ������������� Coal The primary economic coal is the Herrin Coal, located near the top of the Carbondale Formation. ��� ��� ���������� ��� ��������������������������� The Herrin averages 5 feet in thickness, but is eroded or not deposited in a few locations (see inset map of Herrin structure on top of the Herrin Coal).
    [Show full text]
  • Bedrock Aquifer Systems of Pike County, Indiana
    Bedrock Aquifer Systems of Pike County, Indiana by Gregory P. Schrader and William C. Herring Division of Water, Resource Assessment Section June 2003 The occurrence of bedrock aquifers depends on the original composition of the rocks and subsequent changes which influence the hydraulic properties. Post-depositional processes, which promote jointing, fracturing, and solution activity of exposed bedrock, generally increase the hydraulic conductivity (permeability) of the upper portion of bedrock aquifer systems. Because permeability is generally greatest near the bedrock surface, bedrock units within the upper 100 feet are usually the most productive aquifers. In Pike County, rock types exposed at the bedrock surface range from relatively unproductive shales to moderately productive sandstones. Thin limestone and coal seams are sometimes noted as water-bearing. Bedrock aquifer systems in the county are overlain by unconsolidated deposits of varying thickness. Refer to the map for unconsolidated aquifer systems for more information. Most of the bedrock aquifers in the county are under confined conditions. In other words, the potentiometric surface (water level) in most wells completed in bedrock rises above the top of the water-bearing formation. The yield of a bedrock aquifer depends on its hydraulic characteristics and the nature of the overlying deposits. Shale and glacial till act as aquitards, restricting recharge to underlying bedrock aquifers. However, fracturing and/or jointing may occur in aquitards, which can increase recharge to the underlying aquifers. Hydraulic properties of the bedrock aquifers are highly variable. Three bedrock aquifer systems are identified for Pike County based on bedrock surface lithology. They are, from east to west and oldest to youngest: Raccoon Creek Group of Pennsylvanian age; Carbondale Group of Pennsylvanian age; and McLeansboro Group of Pennsylvanian age.
    [Show full text]
  • Bedrock Geology of Williamson County, Illinois
    STATEMAP Williamson County-BG Bedrock Geology of Williamson County, Illinois W. John Nelson 2020 615 East Peabody Drive Champaign, Illinois 61820-6918 (217) 244-2414 http://www.isgs.illinois.edu © 2020 University of Illinois Board of Trustees. All rights reserved. For permission information, contact the Illinois State Geological Survey. R. 4 E. R. 1 E. R. 2 E. R. 3 E. Pond Crk Freeman Pond ver k Spur Cree Creek Pond Bush 148 57 Big M Hurst Big Muddy Ri ud dy Rive r Lake Cree 149 k Johnston T. 8 S. Wade City Pond Creek Madison Prairie Lake Colp ek B r H re ushy u C Creek r Herrin r Johnston e i L ak c Bear Cree a City Lake n e C 37 r e k White Pittsburg Cambria e k Energy Ash Spillertown Buckley Carterville Herrin Reservoir Rock Cree Cree Crainville k k P 13 ig e Li o ttl ab Orcha ek n e Cr rd re Marion C C k Rock Creek r T. 9 S. e e k Cana Cr 13 Crab Crab Bankston For Or char d Orchard k Lake k 1 Caplinger Cree rd Pond rcha Brier Crab O C r e e k W k olf For S k ali e Marion h n k Cree Sou t e h ee re nc r a C C Reservoir 37 r k r B st y a k 166 o s g L s R a u iv r k e e S r G e r 57 L 148 k itt C h l e c k e Cana Cree n Cree e r r a e v sy r C e R i s B n a i r y l T.
    [Show full text]