Surficial Geology of Putnam Quadrangle, Bureau, Putnam, and Marshall Counties, Illinois

              Illinois Preliminary Geologic Map
IPGM Putnam-SG
Base map compiled by Illinois State Geological Survey from digital data provided by the United States Geological Survey. Digital Line Graph hypsography data from 1970; PLSS data from 1972; hydrography and transportation data from 1998.
North American Datum of 1983 (NAD 83)
Projection: Transverse Mercator
10,000-foot ticks: Illinois State Plane Coordinate system, west zone (Transverse Mercator)
1,000-meter ticks: Universal Transverse Mercator grid system, zone 16
Recommended citation:
McKay, E.D., III, R.C. Berg, A.J. Stumpf, and C.P. Weibel, 2007, Surficial geology of Putnam Quadrangle, Bureau, Putnam, and Marshall Counties, Illinois: Illinois State Geological Survey, Illinois Preliminary Geologic Map, IPGM Putnam-SG, 1:24,000.
Geology based on field work by E.D. McKay, R.C. Berg, A.J. Stumpf, and C.P. Weibel, 2001–2003.
This mapping was funded in part by the Illinois Department of Transportation to support planning for upgrade of Illinois Route 29.
Digital cartography by J. Carrell, J. Domier and Z. Golshani, Illinois State Geological Survey.
GIS support by P. Johnstone, L. Smith, and B. Stiff, Illinois State Geological Survey.
This Illinois Preliminary Geologic Map (IPGM) is a lightly edited product, subject to less scientific and cartographic review than our Illinois Geological Quadrangle (IGQ) series. It will not necessarily correspond to the format of IGQ series maps, or to those of other IPGM series maps. Whether or when this map will be upgraded depends on the resources and priorities of the ISGS.
The Illinois State Geological Survey, the Illinois Department of Natural Resources, and the State of Illinois make no guarantee, expressed or implied, regarding the correctness of the interpretations presented in this document and accept no liability for the consequences of decisions made by others on the basis of the information presented here. The geologic interpretations are based on data that may vary with respect to accuracy of geographic loca­tion, the type and quantity of data available at each location, and the scientific and technical qualifications of the data sources. Maps or cross sections in this document are not meant to be enlarged.
IPGM Putnam-SG
SURFICIAL GEOLOGY OF PUTNAM QUADRANGLE
BUREAU, PUTNAM, AND MARSHALL COUNTIES, ILLINOIS
E. Donald McKay III, Richard C. Berg, Andrew J. Stumpf, and C. Pius Weibel
20071 / °12APPROXIMATE MEANDECLINATION, 2007MAGNETIC NORTHTRUE NORTHROAD CLASSIFICATIONPrimary highway,hard surfaceSecondary highway,hard surfaceLight-duty road, hard orimproved surfaceUnimproved roadState Route
ADJOINING
QUADRANGLES
1 Wyanet
2 Princeton South
3 Depue
4 Whitefield
5 Florid
6 La Prairie Center
7 Lacon
8 Henry
BASE MAP CONTOUR INTERVAL 10 FEET
NATIONAL GEODETIC VERTICAL DATUM OF 1929
For more information contact:Illinois State Geological Survey 615 East Peabody Drive
Champaign, Illinois 61820-6964
(217) 244-2414
http://www.isgs.uiuc.edu12345678
Released by the authority of the State of Illinois: 2007
7000
FEET10001000020003000400050006000.51 KILOMETER10SCALE 1:24,0001/2101 MILE
Illinois Department of Natural Resources
ILLINOIS STATE GEOLOGICAL SURVEY
William W. Shilts, Chief
References
Hansel, A.K., and W.H. Johnson, 1996, Wedron and Mason Groups: Lithostratigraphic reclassification of deposits of the Wisconsin Episode, Lake Michigan Lobe area: Illinois State Geological Survey, Bulletin 104, 116 p.Willman, H.B., E. Atherton, T.C. Buschbach, C. Collinson, J.C. Frye, M.E. Hopkins, J.A. Lineback, and J.A. Simon, 1975, Handbook of Illinois stratigraphy: Illinois State Geological Survey, Bulletin 95, 261 p.¹ Stratigraphic nomenclature follows that of Hansel and Johnson (1996) for Wisconsin and younger deposits and Willman et al. (1975) for deposits older than Wisconsin Episode; within each unit, the components are listed in order of decreasing abundance.² Diamicton is a name for a unsorted or poorly sorted, sedimentary deposit that contains a wide range of particle sizes, such as a till that contains clay, silt, sand, gravel, cobbles and boulders.th(m)l-bh(p)p/tc(f)pyc(fp)dgp/l-bh-aQUATERNARY DEPOSITSUnitHUDSON EPISODE (~12,000 years before present (B.P.) to today)Disturbed groundCahokia Formation(floodplain facies)Cahokia Formation(alluvial fan facies)Peyton FormationWISCONSIN EPISODE (~12,000–75,000 years B.P.)Henry Formation(Parkland facies)Henry Formation(Mackinaw facies)Batestown Member,Lemont Formationburied by >5 feet of Peoria SiltTiskilwa Formationburied by >5 feet of Peoria SiltAshmore Tongue,Henry FormationInterpretationDeposits disturbed or modified by human activity in gravel pits, coal mine spoil banks, earthen dams, other excavations and landfillsAlluvium (river sediment); post-glacial overbank deposits on floodplains, natural levees, and in backwater lakes; coarse deposits in channels, point bars, and tributary streamsAlluvial fan deposits; post-glacial redeposited loess and till in fans where streams and ravines emerge from uplands onto low-slope valley floors; subject to floodingSlopewash, talus, rock-fall, and slump deposits on or at base of steep slopes in small coalescing fans along bluff of Illinois River valley and its tributaries; post-glacial; may be poorly consolidated and unstableSand dunes, dune fields and sheet deposits of sand eroded from underlying outwash and redeposited locally on Illinois River terraces; proglacial and post-glacial Fluvial (riverine) and ice-marginal outwash deposits in Illinois River valley in terraces, former bars and channels and locally in terraces along tributaries to Illinois River; deposited proglacially by meltwater from distant glaciers; not consistently differentiable from sand and gravel of the underlying Pearl Formation or Sankoty Sand Member where intervening tills are absentTill and associated sediment derived directly from glacial ice; overlain by thin covering of loess; absent in the Illinois River valley and tributary valleys, where removed by post-glacial erosionTill and associated sediment derived directly from glacial ice; exposed in gullies, excavations and along steep slopes where overlying Peoria Silt and the Batestown Member have been eroded; occurs throughout the uplands of the area; absent in the Illinois River valley and tributary valleys, where removed by post-glacial erosion; where lower part of the unit is gray, the Delavan Member can be differentiated, and where it contains common wood fragments, the Oakland Member can be differentiated.Fluvial and ice-marginal outwash deposits in former bars and channels of Ancient Mississippi River; deposited by meltwater from advancing Wisconsin Episode glacier; also sheets and channels fills beneath Tiskilwa diamicton; widespread in subsurface; underlies but not differentiated from rest of Henry Formation in Illinois River valley; not consistently differentiable from underlying sand and gravel of the Pearl Formation or Sankoty Sand Member where no intervening diamictons are absent Description1Areas of disturbed earth and/or removed earth; grain size ranges from clay to gravel, and may include waste or other rubble Silt and clay with local surface occurrences of sand and gravel; typically grades at depth to sand or sand and gravel, which may be indistinguishable from Henry Formation; stratified, brownish gray to gray; 5 to 50 feet thickSilt and silty clay, interbedded with fine sand, and locally gravel and redeposited bedrock clasts; brownish soft to moderately stiff gray; calcareous or non-calcareous; typically overlies Cahokia or Henry Formations; interfingers with Cahokia floodplain facies; 5 to 30 feet thickSilt, clay, sand, gravel and diamicton; unstratified to crudely stratified; yellowish brown to brownish gray; may include bedrock clasts; overlies Cahokia, Henry, or older glacial drift or bedrock; interfingers with Cahokia; 5 to 25 feet thickSand; very fine to fine, well-sorted, and loose; yellowish brown to grayish brown; calcareous in lower part; conformably overlies Henry Formation; 5 to 15 feet thickSand and gravel with cobbles and boulders; stratified; yellowish brown to grayish brown; calcareous; usually clean and moderately well sorted; unconformably overlies older sand and gravel deposits, glacial diamictons², or bedrock; 10 to 20 feet thick in tributary valleys and 10 to 80 feet thick in Illinois River valleyPebbly silty clay loam diamicton; unstratified; olive (oxidized) to grayish brown (unoxidized); firm to hard; compact; calcareous; massive to jointed; some cobbles, few boulders; discontinuous beds of sand, gravel, silt, or clay; overlain in places by wind-blown silt (loess) of the Peoria Silt; unconformably overlies Dry Creek tongue, Tiskilwa Formation, or older units; 5 to 35 feet thickPebbly loam diamicton; unstratified, reddish brown (oxidized) to dark brownish gray with distinctive reddish cast (unoxidized); firm to hard, calcareous; some cobbles; few boulders; includes discontinuous beds of stratified sand, silt, or clay; lower 5 to 30 feet commonly more silty than upper part, usually lacks reddish cast, and may contain dispersed wood fragments and gastropod shells; unconformably overlies Ashmore Tongue, Morton Tongue silt, Roxana Silt, or older deposits; 25 to 120 feet thickFine to coarse sand, sand and gravel; occasional cobbles; yellowish brown to grayish brown; calcareous; few boulders; water saturated; occasional armored "till balls" in the upper part; calcite cemented in places; overlies older sand and gravel and diamicton deposits or bedrock; 5 to 70 feet thick$T"e"e"e"e"kSG31500OutcropStratigraphic boringWater boringEngineering boringHand-auger boringLabels indicate samples (S) or geophysical log (G). Numeric labels indicate the county number. Outcrop and hand-auger boring labels indicate geologist’s field number. Dot indicates boring is to bedrock.ContactData TypeNote: The county number is a portion of the 12-digit API number on file at the ISGS Geological Records Unit. Online well and boring records are available from the ISGS Web site.50055070055060065060060060060065070070045065065065060065055055065060065050063068060060065065065065065065060060060065065065060060600500600600650450650650650680650550680500600540650550600520650700650600680650500650600600500550600650600650500650550550450700506906006507006505506406506805506006006004506906006505506006505006406705506006505306807006505006005506405506707006007004506706551065060060065060065065065060068055068070060067060060055051060055065065069055060055068065055050065055060060065065065069063055060550550650700600670600600500650650142967341236585859571416132521243612283031363332193522333515182711232634341031881720202932173291011123130252627282930T. 13 N.T. 14 N.T. 13 N.T. 14 N.R. 9 E.R. 10 E.R. 9 E.R. 10 E.T. 15 N.T. 14 N.T. 15 N.T. 14 N.2929"e"e"e"e"k"k"e"e"e"k"e"e"e"k"k"e"k"e"k"e"e"e"e"e"e"k"k"e"k"e"e"e"e"e"e"k"e"e"e"e"e"e"e#1S$T#1S#1S$T#1S$T#1S#1S$T"e#1S$T$T$T$T$T$T#1S$T#1S$T$T$T$T"e"e"e"e"e"e"e"e"e"e"e"k"e"kSG"eS"eS2060820607206002049820767207692055322656226582266122671226632194122205210110081300776001940064100805205332053220591207242053805372026020259202032053620535205342053320532000182055120529202090011020329001110015820249000922030220257203352062000096203282040205012019120404514513512511510509508507506505504503502501500305304303302301300280279278277600563562561560559558206215575565555455320609162tc(fp)ttp/l-bc(fp)tttttl-bp/l-btc(fp)l-bc(f)l-bl-bl-bl-bl-bh(m)l-bp/tl-bh(m)l-bh(m)l-btc(f)p/ttl-bl-bl-bl-bl-bc(f)p/l-bp/l-bp/l-bp/th-ah-ah-atl-bp/ttl-bpyl-bp/l-bp/l-bl-bp/tl-bl-bl-bl-btp/l-bp/tl-bl-bl-btp/tl-bl-bl-bl-btl-bl-bl-bl-bl-bl-bh(m)l-bl-bp/th(m)h-ah-al-bl-bl-bl-bl-bl-bl-bp/tl-bl-bp/tp/tp/tp/tp/th(m)c(fp)l-btp/tl-bp/tl-bl-bh-al-bl-bttl-bh(m)h(m)l-bl-bl-bl-btl-btc(fp)l-bl-bl-bp/l-bttp/l-bp/l-btttc(fp)h(m)c(f)l-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bl-bp/tp/tp/l-bc(fp)c(fp)c(fp)c(fp)c(fp)p/l-bp/l-bp/l-bp/l-bp/l-bp/l-btc(f)h(m)h(m)ttp/tp/tp/l-bp/l-bp/l-bttc(f)c(fp)c(fp)c(fp)p/tp/tp/tp/tp/tp/tp/l-bh(m)h(m)h(m)h(m)h(m)h(m)h(m)h(m)h(m)h(m)p/tp/tp/ttth(m)h(m)l-bl-bl-bl-bl-bl-bttttttp/tdg/hc(fp)c(fp)c(fp)h(m)c(fp)p/l-bp/tttttttttc(fp)h(m)tl-bpypyp/l-bl-bl-bc(fp)p/l-bp/l-bp/l-bpypyc(fp)c(f)p/ttttttl-btth(m)h(m)h(m)h(p)p/tttp/tc(fp)