SURFICIAL GEOLOGIC MAP OF THE BELLE PLAINE NORTH ...
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SURFICIAL GEOLOGIC MAP OF THE BELLE PLAINE NORTH QUADRANGLE, CARVER, SCOTT, AND SIBLEY COUNTIES, MINNESOTA By Barbara A. Lusardi 2001 PREPARED WITH THE SUPPORT OF THE U.S. GEOLOGICAL SURVEY AS PART OF THE 2000 STATE GEOLOGIC MAPPING PROGRAM ELEMENT (STATEMAP) OF THE NATIONAL GEOLOGIC MAPPING PROGRAM Base modified from U.S. Geological Survey 1996 Digital Raster Graphic of the Belle Plaine North 1:24,000 quadrangle, 1981 Universal Transverse Mercator grid, zone 15 1927 North American Datum MISCELLANEOUS MAP SERIES MAP M-109 Belle Plaine North Quadrangle GIS compilation and cartography by Joyce Meints MINNESOTA GEOLOGICAL SURVEY D.L. Southwick, Director 1 Watertown (M-108) 2 Mound (M-94) 3 Waconia (M-103) 4 Victoria (M-88) 5 Shakopee (M-87) 6 Belle Plaine North (M-109) 7 Jordan West (M-93) 8 Jordan East (M-89) INDEX TO STATEMAP QUADRANGLES IN THE MISCELLANEOUS MAP SERIES (M-) The University of Minnesota is an equal opportunity educator and employer 1 1/2 0 1 MILE 1 KILOMETER 0 .5 1 SCALE 1:24 000 CONTOUR INTERVAL 10 FEET NATIONAL GEODETIC VERTICAL DATUM OF 1929 2°25' APPROXIMATE MEAN DECLINATION, 2001 TRUE NORTH MAGNETIC NORTH 2 5 3 4 1 6 7 8 Mississippi River Minnesota River Shakopee Jordan Chaska Belle Plaine Minneapolis HENNEPIN CARVER SCOTT 94° 45° Waconia Watertown QUADRANGLE LOCATION MINNESOTA DESCRIPTION OF MAP UNITS This map emphasizes the origin of surficial materials in the area of the Belle Plaine North 7.5-minute quadrangle. It was constructed in part using aerial photographs taken in 1977 (1:80,000 scale) and U.S. Soil Conservation Service soil-survey maps for Carver, Scott, and Sibley counties (Edwards, 1968; Harms, 1955; Domeier, 1997). Field work was conducted during the summer and fall of 2000. Most exposures consisted of excavations, including construction sites and road cuts. Surface samples were supplemented with soil borings drilled to a depth of about 18 feet (5.5 meters). Additional data from previous mapping (Meyer and Lusardi, 2000) were also included in the analyses and interpretation of map units. PALUSTRINE DEPOSITS Qo Organic deposits (Holocene to Pleistocene)—Ponded and shallow- water sediments consisting of dark-brown to black, drained and undrained peat and muck. Typically found in depressions and surrounding lakes; may include sandy beach sediments. SLOPEWASH DEPOSITS Qc Colluvial deposits (Holocene to Pleistocene)—Reworked sediments consisting of a friable mixture of sand, silt, clay, and pebbles; resembles the till or sand and gravel from which it is derived; may contain disseminated organic debris. Unit includes the till along steep bluffs, sediment that accumulates at the base of steep slopes, and sediment that is deposited along small streams in deep gullies. Qa Alluvial fan deposits (Holocene to Pleistocene)—Slopewash sediments consisting of loam to loamy sand; beds of silt loam to silty clay loam, fine sand, and gravel; disseminated organic debris. Deposited at the base of steep slopes and at the mouths of deep gullies. Forms apron of sediment as thick as 30 feet (9 meters) over terrace and floodplain deposits. FLUVIAL DEPOSITS Qf Alluvium of the Minnesota River (Holocene)—River-channel, overbank, and slackwater sediments consisting of dark-brown to gray silt loam to sandy loam. Amount of sand increases adjacent to river channel and in areas of channel migration (indicated on map by scroll bars). Organic debris is both disseminated in the sediments and forms discrete peat beds. Qfs Alluvium along small streams (Holocene)—Creek-channel, over- bank, and slackwater sediments consisting of dark-grayish- brown to olive-brown loam; layers of fine sand and gravel. May contain organic debris, both disseminated in the sediments and in discrete peat beds. Alluvial terrace deposits (Holocene and Pleistocene)—River- channel and slackwater sediments of Glacial River Warren preserved as terraces above the floodplain of the modern Minnesota River. Sediments consist predominantly of fluvial sand and gravel; coarsens to cobble gravel locally; also includes layers of very fine grained sand to silt. Terraces are numbered from lowest to highest elevation. Qft1 Alluvium of terrace 1—Elevation approximately 770 feet. Qft2 Alluvium of terrace 2—Elevation approximately 830 feet. Qft3 Alluvium of terrace 3—Elevation approximately 870 feet. LACUSTRINE DEPOSITS Qgl Glacial lake deposits (Pleistocene)—Lacustrine sediment consisting of dark-grayish-brown to light-yellowish-brown, generally homogeneous silt loam to silty clay loam; interbedded in places with thin layers of fine sand and pebbles; patchy distribution, mostly on broad level areas; variable thickness (2–15 feet or 0.6–4.5 meters). In regions of high relief, these broad level areas stand out as plateaus from the surrounding hummocky topography. The generally low-relief landscape in this region makes it difficult to identify places where lakes may have formed on top of stagnant ice—small areas of lake sediment may not be shown. GLACIAL DEPOSITS Sediment deposited by ice of the northwest-source Des Moines lobe. Deposits contain abundant gray siliceous shale fragments. Color of till is variable but is typically yellow brown to gray brown where oxidized. Surficial till deposits are interpreted to be stagnation deposits. Distinctions are made, in part, based on the degree of collapse or changes in topographic relief. Till (Pleistocene)—Unsorted sediment consisting of pebbles (common), cobbles (uncommon), and boulders (rare) in a loamy matrix; pockets of silt, sand, and gravel in places. Average composition of the very coarse sand fraction includes crystalline rocks (36 ± 6 percent), carbonate rocks (23 ± 5 percent), and shale fragments (41 ± 6 percent). Qtm Moderate-relief deposits—Till as above; includes coalescing round or elliptical hills; overall relief about 40–50 feet (12–15 meters). Qt Till-plain deposits—Till as above; undulating topography; low relief (10-30 feet; 3-9 meters). DESCRIPTION OF MAP SYMBOLS Contact—Dashed where gradational. Established from aerial photographs, geomorphic expression, soils maps, well logs, borings, and examination of surficial material. Scarp—Ticks point downscarp; dashed where discontinuous or obscure. Marks former channel. Symbol appears at the base of the scarp at the boundary between upland and channel sediments. Alluvial fan—Indicates area where fan morphology is distinct. Scroll bars—Indicates migration of river channel; may be slightly elevated; surface composed of loam to fine to medium sand. Symbol is schematic representation; individual bars not mapped. Soil boring—Auger depths average 18 feet (5.5 meters). Sample location—Includes outcrops, roadcuts, and construc- tion sites. Sandy area—Area where soil texture is sandier than surrounding till as indicated on soils maps. May be additional small, discontinuous patches within till that are not shown. Record of water-well construction—Location of a water well for which there is a log prepared by a well driller. The information on the log is interpreted by a geologist and the location of the well verified. There are 104 well records for the Belle Plaine North quadrangle. SELECTED BIBLIOGRAPHY Domeier, Michael, J., 1997, Soil survey of Sibley County, Minnesota: U.S. Soil Conservation Service, scale 1:20,000, W94° 38'45"–93°46'55"/ N44°43'01"–44°27'21" [printed diagrams, 41 numbered, fold-out diagrams bound with text]. Edwards, R.J., 1968, Soil survey of Carver County, Minnesota: U.S. Soil Conservation Service, scale 1:15,840, W94°57'31"–93°31'13"/N44°58'42"– 44°38' [printed diagrams, 65 numbered, fold-out diagrams bound with text]. Harms, G.F., 1955, Soil survey of Scott County, Minnesota: U.S. Soil Conservation Service, scale 1:20,000, W93°54'40"–93°16'41"/N44°48'46"– 44°32'38" [printed diagrams, 36 numbered, fold-out diagrams bound with text]. Lusardi, B.A., 1998, Surficial geologic map of the Victoria quadrangle, Carver County, Minnesota: Minnesota Geological Survey Miscellaneous Map Series M-88, scale 1:24,000, W93°45'–93°37'30"/N44°52'30"–44°45' [electronic file]. ———1999, Surficial geologic map of the Jordan West quadrangle, Carver and Scott Counties, Minnesota: Minnesota Geological Survey Miscellaneous Map Series M-93, scale 1:24,000, W93°45'–93°37'30"/N44°45'–44°37'30" [electronic file]. ———2000, Surficial geologic map of the Waconia quadrangle, Carver County, Minnesota: Minnesota Geological Survey Miscellaneous Map Series M- 103, scale 1:24,000, W93°52'30"–93°45'/N44°52'30"–44°45' [electronic file]. ———2001, Surficial geologic map of the Watertown quadrangle, Carver, Hennepin, and Wright counties, Minnesota: Minnesota Geological Survey Miscellaneous Map Series M-108, scale 1:24,000, W93°52'30"–93°45'/ N45°00'–44°52'30" [electronic file]. Meyer, G.N., and Lusardi, B.A., 2000, Surficial geology of the St. Paul 30 x 60 minute quadrangle, Minnesota: Minnesota Geological Survey Miscellaneous Map Series M-106, scale 1:100,000, W94°00'–93°00'/ N45°00'–44°30' [electronic file]. ACKNOWLEDGMENTS Chad Kolstad, Hong Truong, Kelly Wheaton, and Alan R. Knaeble drilled the soil borings and described 85 samples collected in the Belle Plaine North quadrangle. The views and conclusions contained in this document are those of the author and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government. This manuscript is submitted for publication with the understanding that the United States Government is authorized to produce and distribute reprints for governmental use. Supported by the U.S. Geological Survey, Department of the Interior, under award no. 00HQAG0116. Every reasonable effort has been made to ensure the accuracy of the factual data on which this map interpretation is based; however, the Minnesota Geological Survey does not warrant or guarantee that there are no errors. Users may wish to verify critical information; sources include both the references listed here and information on file at the offices of the Minnesota Geological Survey in St. Paul. In addition, effort has been made to ensure that the interpretation conforms to sound geologic and cartographic principles. No claim is made that the interpretation shown is rigorously correct, however, and it should not be used to guide engineering-scale decisions without site-specific verification. Qa Qf Qc Qc Qa Qa Qa Qo Qf Qa Qc Qgl Qfs Qfs Qfs Qc Qc Qo Qt Qo Qo Qt Qo Qo Qo Qo Qo Qt Qgl Qfs Qo Qgl Qo Qtm Qt Qo Qo Qo Qgl Qo Qfs Qgl Qo Qgl Qt Qt Qo Qo Qo Qo Qt Qgl Qo Qo Qtm Qa Qc Qf Qc Qo Qa Qgl Qft3 Qft3 Qft3 Qft3 Qft3 Qft3 Qft2 Qft2 Qft2 Qft2 Qft2 Qft1 CORRELATION OF MAP UNITS Qo Qc Glacial Fluvial Palustrine Slopewash Late Wisconsin Holocene Pleistocene QUATERNARY Qft2 Qtm Qt Qf Qfs Qft3 Qft1 Qa Qgl Lacustrine
Transcript of SURFICIAL GEOLOGIC MAP OF THE BELLE PLAINE NORTH ...
SURFICIAL GEOLOGIC MAP OF
THE BELLE PLAINE NORTH QUADRANGLE,
CARVER, SCOTT, AND SIBLEY COUNTIES,
MINNESOTABy
Barbara A. Lusardi
2001
PREPARED WITH THE SUPPORT OF THE U.S. GEOLOGICAL SURVEY AS PART OF THE2000 STATE GEOLOGIC MAPPING PROGRAM ELEMENT (STATEMAP) OF THE NATIONAL GEOLOGIC MAPPING PROGRAM
Base modified from U.S. Geological Survey1996 Digital Raster Graphic of the Belle PlaineNorth 1:24,000 quadrangle, 1981
Universal Transverse Mercator grid, zone 151927 North American Datum
MISCELLANEOUS MAP SERIESMAP M-109
Belle Plaine North Quadrangle
GIS compilation andcartography by Joyce Meints
MINNESOTA GEOLOGICAL SURVEYD.L. Southwick, Director
1 Watertown (M-108)2 Mound (M-94)
3 Waconia (M-103)4 Victoria (M-88)5 Shakopee (M-87)
6 Belle Plaine North (M-109)7 Jordan West (M-93)8 Jordan East (M-89)
INDEX TO STATEMAP QUADRANGLES IN THE MISCELLANEOUS MAP SERIES (M-)The University of Minnesota is an equal opportunity educator and employer
1 1/2 0 1 MILE
1 KILOMETER0.51
SCALE 1:24 000
CONTOUR INTERVAL 10 FEETNATIONAL GEODETIC VERTICAL DATUM OF 1929
2°25'
APPROXIMATE MEAN DECLINATION, 2001
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River
Minn
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Shakopee
Jordan
Chaska
Belle Plaine
Minneapolis
HENNEPIN
CARVER
SCOTT
94° 45°
Waconia
Watertown
QUADRANGLE LOCATION
MINNESOTA
DESCRIPTION OF MAP UNITSThis map emphasizes the origin of surficial materials in the area of the
Belle Plaine North 7.5-minute quadrangle. It was constructed in part usingaerial photographs taken in 1977 (1:80,000 scale) and U.S. Soil ConservationService soil-survey maps for Carver, Scott, and Sibley counties (Edwards,1968; Harms, 1955; Domeier, 1997).
Field work was conducted during the summer and fall of 2000. Mostexposures consisted of excavations, including construction sites and roadcuts. Surface samples were supplemented with soil borings drilled to adepth of about 18 feet (5.5 meters). Additional data from previous mapping(Meyer and Lusardi, 2000) were also included in the analyses and interpretationof map units.
PALUSTRINE DEPOSITSQo Organic deposits (Holocene to Pleistocene)—Ponded and shallow-
water sediments consisting of dark-brown to black, drainedand undrained peat and muck. Typically found in depressionsand surrounding lakes; may include sandy beach sediments.
SLOPEWASH DEPOSITSQc Colluvial deposits (Holocene to Pleistocene)—Reworked sediments
consisting of a friable mixture of sand, silt, clay, and pebbles;resembles the till or sand and gravel from which it is derived;may contain disseminated organic debris. Unit includes thetill along steep bluffs, sediment that accumulates at the baseof steep slopes, and sediment that is deposited along smallstreams in deep gullies.
Qa Alluvial fan deposits (Holocene to Pleistocene)—Slopewashsediments consisting of loam to loamy sand; beds of silt loamto silty clay loam, fine sand, and gravel; disseminated organicdebris. Deposited at the base of steep slopes and at the mouthsof deep gullies. Forms apron of sediment as thick as 30 feet(9 meters) over terrace and floodplain deposits.
FLUVIAL DEPOSITSQf Alluvium of the Minnesota River (Holocene)—River-channel,
overbank, and slackwater sediments consisting of dark-brownto gray silt loam to sandy loam. Amount of sand increasesadjacent to river channel and in areas of channel migration(indicated on map by scroll bars). Organic debris is bothdisseminated in the sediments and forms discrete peat beds.
Qfs Alluvium along small streams (Holocene)—Creek-channel, over-bank, and slackwater sediments consisting of dark-grayish-brown to olive-brown loam; layers of fine sand and gravel.May contain organic debris, both disseminated in the sedimentsand in discrete peat beds.
Alluvial terrace deposits (Holocene and Pleistocene)—River-channel and slackwater sediments of Glacial River Warrenpreserved as terraces above the floodplain of the modernMinnesota River. Sediments consist predominantly of fluvialsand and gravel; coarsens to cobble gravel locally; also includeslayers of very fine grained sand to silt. Terraces are numberedfrom lowest to highest elevation.
Qft1 Alluvium of terrace 1—Elevation approximately 770 feet.
Qft2 Alluvium of terrace 2—Elevation approximately 830 feet.
Qft3 Alluvium of terrace 3—Elevation approximately 870 feet.
LACUSTRINE DEPOSITSQgl Glacial lake deposits (Pleistocene)—Lacustrine sediment consisting
of dark-grayish-brown to light-yellowish-brown, generallyhomogeneous silt loam to silty clay loam; interbedded in placeswith thin layers of fine sand and pebbles; patchy distribution,mostly on broad level areas; variable thickness (2–15 feet or0.6–4.5 meters). In regions of high relief, these broad levelareas stand out as plateaus from the surrounding hummockytopography. The generally low-relief landscape in this regionmakes it difficult to identify places where lakes may haveformed on top of stagnant ice—small areas of lake sedimentmay not be shown.
GLACIAL DEPOSITSSediment deposited by ice of the northwest-source Des Moines lobe. Depositscontain abundant gray siliceous shale fragments. Color of till is variable butis typically yellow brown to gray brown where oxidized. Surficial till depositsare interpreted to be stagnation deposits. Distinctions are made, in part,based on the degree of collapse or changes in topographic relief.
Till (Pleistocene)—Unsorted sediment consisting of pebbles(common), cobbles (uncommon), and boulders (rare) in a loamymatrix; pockets of silt, sand, and gravel in places. Averagecomposition of the very coarse sand fraction includes crystallinerocks (36 ± 6 percent), carbonate rocks (23 ± 5 percent), andshale fragments (41 ± 6 percent).
Qtm Moderate-relief deposits—Till as above; includes coalescing roundor elliptical hills; overall relief about 40–50 feet (12–15 meters).
Qt Till-plain deposits—Till as above; undulating topography; lowrelief (10-30 feet; 3-9 meters).
DESCRIPTION OF MAP SYMBOLSContact—Dashed where gradational. Established from aerial
photographs, geomorphic expression, soils maps, well logs,borings, and examination of surficial material.
Scarp—Ticks point downscarp; dashed where discontinuous orobscure. Marks former channel. Symbol appears at thebase of the scarp at the boundary between upland and channelsediments.
Alluvial fan—Indicates area where fan morphology is distinct.
Scroll bars—Indicates migration of river channel; may be slightlyelevated; surface composed of loam to fine to medium sand.Symbol is schematic representation; individual bars notmapped.
Soil boring—Auger depths average 18 feet (5.5 meters).
Sample location—Includes outcrops, roadcuts, and construc-tion sites.
Sandy area—Area where soil texture is sandier than surroundingtill as indicated on soils maps. May be additional small,discontinuous patches within till that are not shown.
Record of water-well construction—Location of a water wellfor which there is a log prepared by a well driller. Theinformation on the log is interpreted by a geologist and thelocation of the well verified. There are 104 well recordsfor the Belle Plaine North quadrangle.
SELECTED BIBLIOGRAPHYDomeier, Michael, J., 1997, Soil survey of Sibley County, Minnesota: U.S.
Soil Conservation Service, scale 1:20,000, W94°38'45"–93°46'55"/N44°43'01"–44°27'21" [printed diagrams, 41 numbered, fold-out diagramsbound with text].
Edwards, R.J., 1968, Soil survey of Carver County, Minnesota: U.S. SoilConservation Service, scale 1:15,840, W94°57'31"–93°31'13"/N44°58'42"–44°38' [printed diagrams, 65 numbered, fold-out diagrams bound withtext].
Harms, G.F., 1955, Soil survey of Scott County, Minnesota: U.S. SoilConservation Service, scale 1:20,000, W93°54'40"–93°16'41"/N44°48'46"–44°32'38" [printed diagrams, 36 numbered, fold-out diagrams bound withtext].
Lusardi, B.A., 1998, Surficial geologic map of the Victoria quadrangle, CarverCounty, Minnesota: Minnesota Geological Survey Miscellaneous MapSeries M-88, scale 1:24,000, W93°45'–93°37'30"/N44°52'30"–44°45'[electronic file].
———1999, Surficial geologic map of the Jordan West quadrangle, Carverand Scott Counties, Minnesota: Minnesota Geological Survey MiscellaneousMap Series M-93, scale 1:24,000, W93°45'–93°37'30"/N44°45'–44°37'30"[electronic file].
———2000, Surficial geologic map of the Waconia quadrangle, Carver County,Minnesota: Minnesota Geological Survey Miscellaneous Map Series M-103, scale 1:24,000, W93°52'30"–93°45'/N44°52'30"–44°45' [electronicfile].
———2001, Surficial geologic map of the Watertown quadrangle, Carver,Hennepin, and Wright counties, Minnesota: Minnesota Geological SurveyMiscellaneous Map Series M-108, scale 1:24,000, W93°52'30"–93°45'/N45°00'–44°52'30" [electronic file].
Meyer, G.N., and Lusardi, B.A., 2000, Surficial geology of the St. Paul30 x 60 minute quadrangle, Minnesota: Minnesota Geological SurveyMiscellaneous Map Series M-106, scale 1:100,000, W94°00'–93°00'/N45°00'–44°30' [electronic file].
ACKNOWLEDGMENTSChad Kolstad, Hong Truong, Kelly Wheaton, and Alan R. Knaeble
drilled the soil borings and described 85 samples collected in the BellePlaine North quadrangle.
The views and conclusions contained in this document are those of the author andshould not be interpreted as necessarily representing the official policies, either expressedor implied, of the U.S. Government. This manuscript is submitted for publication withthe understanding that the United States Government is authorized to produce anddistribute reprints for governmental use. Supported by the U.S. Geological Survey,Department of the Interior, under award no. 00HQAG0116.
Every reasonable effort has been made to ensure the accuracy of the factual dataon which this map interpretation is based; however, the Minnesota Geological Surveydoes not warrant or guarantee that there are no errors. Users may wish to verify criticalinformation; sources include both the references listed here and information on file atthe offices of the Minnesota Geological Survey in St. Paul. In addition, effort has beenmade to ensure that the interpretation conforms to sound geologic and cartographicprinciples. No claim is made that the interpretation shown is rigorously correct, however,and it should not be used to guide engineering-scale decisions without site-specificverification.
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CORRELATION OF MAP UNITS
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Glacial Fluvial Palustrine Slopewash
Late Wisconsin
Holocene
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QUATERNARY Qft2
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Lacustrine
