Le Sueur County Aggregate Resource Evaluation - Aggregate Potential - Sand and Gravel - Crushed Stone - Mapping Units

This page last updated: 04/10/2007
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 geology, geological characteristics, and sand and gravel potential of 69 map units. Five fields (attributes) relate to the surficial geology of the map unit. Eleven fields (attributes) relate to sand and gravel characteristics, including probability, quality, texture, overburden thickness, and deposit size of the map unit. These characteristics were used to calculate the aggregate potential of the map unit for sand and gravel.
Browse Graphic View a sample of the data.
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 Acknowledgement of the Minnesota Department of Natural Resources is appreciated for products derived from these data.
Use Constraints Acknowledgement of the MN DNR is appreciated in products derived from these data.
Distributor Organization Minnesota Department of Natural Resources, Division of Lands and Minerals
Ordering Instructions This and other aggregate resource data layers for Le Sueur County are available for download in a zipfile, lesudata.zip, accessible from the MN DNR, Lands and Minerals, Aggregate Mapping web site: http://www.dnr.state.mn.us/lands_minerals/aggregatemaps.html

Maps formatted as .pdf files can be downloaded from the same site: Plate A: Aggregate Resources (lesu_platea.pdf) and Plate B: Surficial Geology (lesu_plateb.pdf).

Note: the web page also indicates which other counties have been mapped.
Online Linkage Click here to download data. (See Ordering Instructions above for details.) By clicking here, you agree to the notice in "Distribution Liability" in Section 6 of this metadata.

Full Metadata

Le Sueur County Aggregate Resource Evaluation - Aggregate Potential - Sand and Gravel - Crushed Stone - 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 - Aggregate Potential - Sand and Gravel - Crushed Stone - Mapping Units
Abstract This dataset consists of information about the geology, geological characteristics, and sand and gravel potential of 69 map units. Five fields (attributes) relate to the surficial geology of the map unit. Eleven fields (attributes) relate to sand and gravel characteristics, including probability, quality, texture, overburden thickness, and deposit size of the map unit. These characteristics were used to calculate the aggregate potential of the map unit for sand and gravel.
Purpose To summarize the geological characteristics, surficial geology, and aggregate potential (sand, gravel) of the different units. To help categorize the geological characteristics and incorporate them into a model to help determine the aggregate potential of the deposit.
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 geoscientificInformation, surficial geology, geological characteristics, aggregate potential, sand, gravel, crushed stone
Theme Keyword Thesaurus ISO 19115 Topic Category
Access Constraints Acknowledgement of the Minnesota Department of Natural Resources is appreciated for products derived from these data.
Use Constraints Acknowledgement of the MN DNR is appreciated in products derived from these data.
Contact Person Information Jon Ellingson (or Renee Johnson), Industrial Minerals Geologist (or GIS Specialist)
Minnesota Department of Natural Resources, Division of Lands and Minerals
2300 Silver Creek Road NE, Box 27
Rochester, MN 55906
Phone: 507-280-5590
FAX:
E-mail: jon.ellingson@dnr.state.mn.us
Browse Graphic View a sample of the data.
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 quality data.

 
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 sand and gravel and surficial geology units were delineated by the interpretation of aerial photographs at a 1:40000 scale. These interpretations were plotted on 1:24000 USGS topographic maps. These delineations and unit descriptions were field checked and revised. The final coverage was digitized onscreen using Arcview with USGS DOQs (at a scale of 1:12000) and USGS DRGs (at a scale of 1:24000) as the spatially registered backdrops. This was a reconnaissance-scale survey and was mapped at 1:50000.
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 Polygon
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 polygons were delineated to represent geological features, geological characteristics, and aggregate potential for sand and gravel.
Entity and Attribute Detailed Citation ftp://ftp.lmic.state.mn.us/pub/dnr/attributes/lesuagppy_att.htm
 
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 2003
Contact Person Information Jon Ellingson
Industrial Minerals Geologist
Minnesota Department of Natural Resources, Division of Lands and Minerals
2300 Silver Creek Road NE, Box 27
Rochester, MN 55906
Phone: 507-280-5590
FAX:
E-mail: jon.ellingson@dnr.state.mn.us
Distributor's Data Set Identifier lesuagpy
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 1.7 mb for data, 11.1 mb for associated maps
Ordering Instructions This and other aggregate resource data layers for Le Sueur County are available for download in a zipfile, lesudata.zip, accessible from the MN DNR, Lands and Minerals, Aggregate Mapping web site: http://www.dnr.state.mn.us/lands_minerals/aggregatemaps.html

Maps formatted as .pdf files can be downloaded from the same site: Plate A: Aggregate Resources (lesu_platea.pdf) and Plate B: Surficial Geology (lesu_plateb.pdf).

Note: the web page also indicates which other counties have been mapped.
Online Linkage Click here to download data. (See Ordering Instructions above for details.) By clicking here, you agree to the notice in "Distribution Liability" above.
 
Section 7 Metadata Reference Information Top of full metadata Top of page
Metadata Date 04/10/2007
Contact Person Information Jon Ellingson, Industrial Minerals Geologist
Minnesota Department of Natural Resources, Division of Lands and Minerals
2300 Silver Creek Road NE, Box 27
Rochester, MN 55906
Phone: 507-280-5590
FAX: 507-285-7144
E-mail: jon.ellingson@dnr.state.mn.us
Metadata Standard Name Minnesota Geographic Metadata Guidelines
Metadata Standard Version 1.2
Metadata Standard Online Linkage http://www.lmic.state.mn.us/gc/stds/metadata.htm


This page last updated: 04/10/2007