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Geologic Investigations Series Map I-2669 Sheet 3

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Geologic Investigations Series Map I-2669 Sheet 3 U.S. DEPARTMENT OF THE INTERIOR Prepared in cooperation with the GEOLOGIC INVESTIGATIONS SERIES U.S. GEOLOGICAL SURVEY ILLINOIS STATE GEOLOGICAL SURVEY MAP I–2669 (SHEET 3 OF 3) S S S S S TER TER TER TER TER 0 0 0 0 0 0 0 0 0 0 50 25 50 25 75 0 50 25 75 50 25 0 50 25 75 75 0 0 75 0 225 20 1 1 1 1 250 225 20 1 1 1 1 225 20 1 1 1 1 250 225 20 1 1 1 1 250 225 20 1 1 1 1 ME ME ME ME E' 89° 88° A' ME D' C' B' Woodford Co. A' B' C' E' 150 D' Tazewell Co. E M INO 57 r L NK e WOODFORD CO. MORAINE v P i A Sibley 45 R M P MC LEAN CO. ack S CHATSWORTH MORAINE in E k aw O 39 e A EL PASO MORAINE 150 55 R M 54 e E iv O L r aw er RAINE g C n U X n ki N L i SECTION c 51 I SECTION SECTION a R r I-I' SECTION SECTION I O p I' Mackinaw River I-I' Mackinaw River M L T I I-I' I-I' I-I' E S S R 165 O 74 K L M A N A I M A BLO L BLOOMINGTON MORAINE OM Danvers IN O EUREKA MORAINE G 9 T N Mackinaw O M N 47 R E A A E O Sugar Creek M Normal F N I L N I R NE NORMAL MORAINE E I 115 40° 30' O A TC M H A A 49 E R R R I O S MO R IROQUOIS CO. A R N FLETCHERS MORAINE Iroquois Co. 9 A O M E k I I 9 FORD CO. Ford Co. r Bloomington N o N M E M B F O O ig E R E A F Paxton t Rankin s IN N R o u e E A I Gibson City r K E 9 E EUREKA MORAINE W EURE A D 9 k N i L I A t J' ee I ch L r A R BLOOMINGTON MORAINE CHATSWORTH MORAINE 122 C R N P I TEM O A S M O I NORMAL MORAINE SECTION r N C X OR AL T YS a M O J-J' M N S g S u Y West Fork S 55 S S ILLIANA MORAINIC H B T M ON I LOO E R MINGTON M O L M O Ford Co. Ford Co. FORD CO. E M R SHIRLEY MORAINE k R r Y id A Champaign Co. Champaign Co. ELLIS MORAINE o k CHAMPAIGN CO. d A F l MORAINE e e OOMINGT 74 150 I e re Sanga Fo I N SECTION l mo r N BL d C n k MC LEAN CO. E J-J' d R i i 45 E PAXTON MORAINE o M v M o O e R 54 p A r I V a N J k E 57 e c r RA i m O IN SECTION SECTION SECTION SECTION M E K SECTION C i H' H-H' H OY l H-H' LE ROY MORAINE H-H' H-H' E R i H-H' L o MC LEAN CO. H n LE ROY MORAINE Middle Fork Vermilion River I Middle Fork Kickapoo Creek M E A L R TAZEWELL CO. Le Roy ORAIN LI Heyworth A iv Tazewell Co. k M 47 N e LOGAN CO. ee h A r Logan Co. r itc Y C P D 136 SECTION O M 136 136 R A Sugar Creek HEYWORTH MORAINE J-J' H t ig O E E l B a Rantoul L Y I R S G 40 40 40 40 40 W A McLean Co. I O MC LEAN CO. N McLean Co. N LE ROY MORAINE k R E De Witt Co. E De Witt Co. e I T DE WITT CO. N C e I N r Atlanta H A I SHELBYVILLE MORAINE TION X 1 TION X 1 TION X 1 TION X 1 C TION X 1 L R o M A S S n O r g M M R Y a H Point Farmer City O S SECTION g E ek Cr u L e ee O O T J-J' k GGERA B r TEM GGERA S GGERA GGERA GGERA Y C R S E APPROXIMATE BOUNDARY VI R Salt Creek RANTOUL MORAINE L M M YS LE o A p OF WEDRON GROUP A o S o p o a I I L Kickapoo Creek n k N North Fork N r c e ILLIANA MORAINIC i v U De Witt Co. E E i K O h R R Piatt Co. c TICAL EXA TICAL EXA TICAL EXA TICAL EXA TICAL EXA M T i 74 n v 150 a e CHAMPAIGN CO. N r VERMILION CO. 55 r O VER VER VER VER VER A B 51 A R 54 Mahomet 49 R N n A o e A m CH n a A i DE WITT CO. l I PIATT CO. g M n P B a A a N Lake Clinton I S S G R N E Clinton Ten Mile Creek k U e E e M Lincoln r IN 48 C O 10 e A SECTION SECTION il R R SECTION SECTION SECTION M O G k A G' G-G' G-G' G-G' G-G' e M G-G' n H I re e T T R N C O E 47 E EYW r H Ogden Deer Creek ee N D 74 I 72 10 CHAMPAIGN MORAINE 121 A 10 150 Urbana Salt Creek Champaign St. Joseph R G O o o CHAMPAIGN CO. Goose Creek se M PIATT CO. k E C e r e e r LOGAN CO. N e C k Salt Fork I De Witt Co. Salt Creek 54 130 lt DE WITT CO. a P A Macon Co. S U Fork t OPE OF MACON CO. E al R S S SECTION R Monticello E H O k J-J' O e m Mount e I B W YVILLE MORAINE r b T L XIMAL SL Pulaski M C a Homer U r E D A r PRO O 57 s a S SHELB M s Sangamon River d R N n r URBANA MORAINE 45 T e e 40° i D E r v R F i A i T R v R e H I Tolono r A NE TUM MORAINE R O a R 49 i E k 51 I O G s L 48 D M a M k L G s O I a T OF PESO E K 105 R V CO. PIATT 121 72 CO. MACON A CRES Y R SECTION SECTION SECTION SECTION SECTION I CERRO GORDO MORAINE I F B N F' F-F' F-F' F-F' F-F' F-F' M D k L Lake Fork r r G Lake Fo e Bement E M LOGAN CO. E iv O O O E H R R Logan Co. on R R R F SANGAMON CO. S am A AR O Sangamon Co. g A M M R an E I A S Pesotum N RIDGE FARM MORAINE Lake C I E IN N E Decatur E HILDRETH MORAINE Decatur B A E C D 0 0 0 A 0 0 E T 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 D B 0 0 0 T T T C T 750 70 650 60 550 40 350 850 80 50 450 750 70 650 60 550 40 350 80 50 450 750 70 650 60 550 40 350 750 70 650 60 550 40 350 80 50 450 750 70 650 60 550 40 350 90 850 80 50 450 Base map sources: Drainage from USGS 1:100,000-scale Digital Line Graph files. County SCALE 1:250 000 90 850 80 50 450 FEE FEE FEE FEE FEE boundaries from ISGS and roads from Illinois Department of Natural Resources (IDNR); 5 0 5 10 15 20 MILES both data sets digitized from USGS 1:24,000- and 1:62,500-scale topographic maps. Municipal boundaries from IDNR, adapted from U.S. Census Bureau TIGER line files 5 0 5 10 15 20 25 KILOMETERS Universal Transverse Mercator projection Location of cross-section traverses. End moraines, a significant topographic feature on the cross sections, are shown for reference. Moraines are from a smaller scale map by Willman and Frye (1970). I E' D' Figure 17.—Cross sections along nine straight-line traverses and EXPLANATION OF STRATIGRAPHIC UNITS H along one traverse (section J–J’) that follows the Mahomet Bedrock Lake Clinton As shown in figure 17 (cross sections) and figures 18 and 19 C' Valley thalweg (the thalweg is the valley axis, connecting the deepest G J J' points along the valley). Cross sections were computed from the Wedron and Mason Groups, including Cahokia Formation BEND IN FEET SECTION ILLIANA MORAINIC SYSTEM METERS (Wisconsin and Hudson Episodes). This unit is assigned a mini- milion River BEND IN three-dimensional model of stratigraphic units based on the elevation SECTION AIGN MORAINE 850 er eek maps shown in figure 14 (sheet 2). Difficulties were encountered in mum thickness of 15 ft F B' ON MORAINE TH MORAINE Ford Co.
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