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Le Sueur County Aggregate Resource Evaluation - Boundaries between Aggregate Potential Mapping Units
This page last updated: 2007
Metadata created using Minnesota Geographic Metadata Guidelines

Metadata Summary

Originator | Department of Natural Resources, Division of Lands and Minerals, Mineral Potential Section
Abstract | This dataset consists of information about the types of geologic contacts, or boundaries, between the mapping unit polygons of the aggregate potential layer. There are three types of contacts: county border, geologic contact - well defined, channel scarp - well defined.
Browse Graphic | none available
Time Period of Content Date | 2003
Currentness Reference | Data were gathered in the fall of 2002 and the spring of 2003 and compiled during the spring of 2003.
Access Constraints |
Use Constraints | Acknowledgement of the Minnesota Department of Natural Resources is appreciated for products derived from these data.
Distributor Organization | Minnesota Department of Natural Resources, Division of Lands and Minerals
Ordering Instructions | The aggregate resource data layers are part of the lesudata.zip file if they are downloaded from the MN DNR web page at http://dnr.state.mn.us/lands_minerals/aggregatemaps.html The files can also be found on the CD available for the project from MN DNR, Division of Lands and Minerals, under the drive:\data\resource subdirectory (where 'drive' is the CD reader or writer drive for the PC).
Online Linkage | none available

Full Metadata
Le Sueur County Aggregate Resource Evaluation - Boundaries between Aggregate Potential Mapping Units

Go to Section:
1. Identification Information
2. Data Quality Information
3. Spatial Data Organization Information
4. Spatial Reference Information
5. Entity and Attribute Information
6. Distribution Information
7. Metadata Reference Information

Section 1 | Identification Information |  | Top of page
Originator | Department of Natural Resources, Division of Lands and Minerals, Mineral Potential Section
Title | Le Sueur County Aggregate Resource Evaluation - Boundaries between Aggregate Potential Mapping Units
Abstract | This dataset consists of information about the types of geologic contacts, or boundaries, between the mapping unit polygons of the aggregate potential layer. There are three types of contacts: county border, geologic contact - well defined, channel scarp - well defined.
Purpose | To differentiate the types of geological contacts so that various line symbols (e.g., solid lines, hatched lines, dashed lines) can be used to show the contacts between polygons on a map.
Time Period of Content Date | 2003
Currentness Reference | Data were gathered in the fall of 2002 and the spring of 2003 and compiled during the spring of 2003. |  |  |
Progress | Complete
Maintenance and Update Frequency | None planned
Spatial Extent of Data | Le Sueur County, Minnesota
Bounding Coordinates | -94.03 -93.52 44.55 44.19
Place Keywords | Le Sueur County, Minnesota
Theme Keywords | Geologic contacts, channel scarps
Theme Keyword Thesaurus |
Access Constraints |
Use Constraints | Acknowledgement of the Minnesota Department of Natural Resources is appreciated for products derived from these data.
Contact Person Information | Aggregate Resource Mapping Program (Geologist or GIS Specialist) Minnesota Department of Natural Resources, Division of Lands and Minerals 500 Lafayette Road, Box 45 St. Paul, MN 55155-4045 Phone: 651-259-5959 FAX: 651-296-5939 E-mail: AggregateMap@dnr.state.mn.us
Browse Graphic | none available
Browse Graphic File Description |
Associated Data Sets | The County Aggregate Mapping Program dataset for Le Sueur County is included in the file lesudata.zip, accessible from the MN DNR Aggregate Mapping web page: http://www.dnr.state.mn.us/lands_minerals/aggregatemaps.html The dataset is also available as aggregate resource data layers stored at drive:\data\resource on the CD (where 'drive' is the CD reader or writer drive on the PC). The data layers include data on sand and gravel potential, crushed stone potential, field observations, rock piles, and test pit wuality data. The web page also indicates which other counties have been mapped.
Section 2 | Data Quality Information | Top of full metadata | Top of page
Attribute Accuracy |
Logical Consistency | Overshoots and undershoots were fixed by a variety of techniques, thus the lines have been checked and completed.
Completeness | The mapping units were delineated by aerial photograph (at a scale of 1:40000) interpretation and digitized onscreen, using Arcview with 1:12000 USGS DOQs and 1:24000 USGS DRGs as the spatially registered backdrops.
Horizontal Positional Accuracy | 1:50000
Vertical Positional Accuracy | Not applicable.
Lineage | Color infrared and black-and-white aerial photographs were used to delineate geological landforms and aggregate resources. Stereoscopic pairs of color infrared aerial photographs (NAPP, 9in x 9in at 1:40000 scale, April 1991 and April 1992) were used along with reconnaissance-level, high-altitude, black-and-white photographs (1:80000 scale). Aerial photographs (DOQs at 1:12000) were also available digitally and used within Arcview. Aerial photographic interpretation was completed with a glacial mapping technique known as the landsystems approach. This technique relies on the principle that depositional glacial landforms are composed of a predictable range of sediments, some consisting of sorted sand and gravel and others consisting of silts, clays, or unsorted materials. In addition to the landsystems approach, several other general characteristics helped determine the nature of the material, such as tonal contrasts, texture, context, shape, size, trend, association, and patterns. These characteristics can help determine the properties of the surface material (e.g., certain vegetation grows on well drained soils such as sand and gravel, which on an aerial photograph has a distinctive texture, tone, pattern, etc.). The landform recognition approach (part of the landsystems approach) was also used when interpreting the topography within Le Sueur County. Glacial landforms have distinct and unique shapes and patterns that can be observed in their topographic expression. Topographic maps (USGS 1:24000), digital elevation models, and shaded relief maps were all used to help delineate these sand and gravel bearing features. The topographic expression of a feature can also be observed by looking at the distribution of lakes and wetlands. For example, a string of lakes and/or wetlands may be the signature of a glacial outwash channel or collapsed channel, which may host sand or gravel deposits. Several aggregate bearing features were located using this technique (outwash channels, collapsed channels, glaciofluvial fans, eskers, and terraces).
Source Scale Denominator | 50000
Section 3 | Spatial Data Organization Information | Top of full metadata | Top of page
Native Data Set Environment | ArcGIS 8.3, Arc/INFO 8.0.2, and Arcview 3.3 from ESRI
Geographic Reference for Tabular Data |
Spatial Object Type | Vector
Vendor Specific Object Types | Line
Tiling Scheme | Le Sueur County
Section 4 | Spatial Reference Information | Top of full metadata | Top of page
Horizontal Coordinate Scheme | UTM
Ellipsoid | GRS80
Horizontal Datum | NAD83
Horizontal Units | Meters
Distance Resolution |
Altitude Datum | Not applicable
Depth Datum | Not applicable
UTM Zone Number | 15E
Section 5 | Entity and Attribute Information | Top of full metadata | Top of page
Entity and Attribute Overview | The lines delineate the polygon mapping units found in the aggregate potential layer. Note: some of these lines, specifically the channel scarps and glacial margin, are also found in the lesusgeoln shapefile, to enable the user to portray these special features as a continuous line symbol.
Entity and Attribute Detailed Citation | lesuagpln_att.htm Attribute values can be found in the following table: lesuagpln_att.htm. If this table hotlink cannot be found by your browser, you can find this file stored in the same location (i.e., drive:\docs) as this metadata record.
Section 6 | Distribution Information | Top of full metadata | Top of page
Publisher | Department of Natural Resources, Division of Lands and Minerals, Mineral Potential Section
Publication Date | 2007
Contact Person Information | Aggregate Resource Mapping Program (Geologist or GIS Specialist) Minnesota Department of Natural Resources, Division of Lands and Minerals 500 Lafayette Road, Box 45 St. Paul, MN 55155-4045 Phone: 651-259-5959 FAX: 651-296-5939 E-mail: AggregateMap@dnr.state.mn.us
Distributor's Data Set Identifier | County Aggregate Mapping - Le Sueur County
Distribution Liability | The Minnesota Department of Natural Resources makes no representation or warranties, express or implied, with respect to the reuse of data provided herewith, regardless of its format or the means of its transmission. There is no guarantee or representation to the user as to the accuracy, currency, suitability, or reliability of this data for any purpose. The user accepts the data 'as is', and assumes all risks associated with its use. By accepting this data, the user agrees not to transmit this data or provide access to it or any part of it to another party unless the user shall include with the data a copy of this disclaimer. The Minnesota Department of Natural Resources assumes no responsibility for actual or consequential damage incurred as a result of any user's reliance on this data.
Transfer Format Name |
Transfer Format Version Number |
Transfer Size |
Ordering Instructions | The aggregate resource data layers are part of the lesudata.zip file if they are downloaded from the MN DNR web page at http://dnr.state.mn.us/lands_minerals/aggregatemaps.html The files can also be found on the CD available for the project from MN DNR, Division of Lands and Minerals, under the drive:\data\resource subdirectory (where 'drive' is the CD reader or writer drive for the PC).
Online Linkage | none available
Section 7 | Metadata Reference Information | Top of full metadata | Top of page
Metadata Date | 2007
Contact Person Information | Aggregate Resource Mapping Program (Geologist or GIS Specialist) Minnesota Department of Natural Resources, Division of Lands and Minerals 500 Lafayette Road, Box 45 St. Paul, MN 55155-4045 Phone: 651-259-5959 FAX: 651-296-5939 E-mail: AggregateMap@dnr.state.mn.us
Metadata Standard Name |
Metadata Standard Version | 1.2
Metadata Standard Online Linkage | http://www.lmic.state.mn.us/gc/stds/metadata.htm

This page last updated: 2003