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Le Sueur County Aggregate Resource Evaluation - Geology 'Line' Features

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 landforms and features that are best represented on a map by a line (or arc). These landforms include channel scarps in Le Sueur County.

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://www.dnr.state.mn.us/lands_minerals/aggregatemaps.html
The files can also be found on the CD available from MN DNR, Division of Lands and Minerals, under the drive:\data\resource subdirectory (where 'drive' is the CD reader or writer drive on the PC).

Note: the web page also indicates which other counties have been mapped.

Online Linkage

none available


 

Full Metadata
Le Sueur County Aggregate Resource Evaluation - Geology 'Line' Features


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 - Geology 'Line' Features

Abstract

This dataset consists of information about the types of landforms and features that are best represented on a map by a line (or arc). These landforms include channel scarps in Le Sueur County.

Purpose

To represent small, linear, surficial geologic landforms and features on a map as lines, because they are too small to be represented by a polygon.

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

Landforms, geologic features

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 quality data.

 

Section 2

Data Quality Information

Top of full metadata

Top of page

Attribute Accuracy

 

Logical Consistency

 

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

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 lines represent geologic landforms that are too small to be mapped as polygons. Note: some of these lines are also found in the lesuagpln shapefile, because they form the boundary between two polygon mapping units.

Entity and Attribute Detailed Citation

lesusgeoln_att.htm

Attribute values can be found in the following table: lesusgeoln_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

2003

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://www.dnr.state.mn.us/lands_minerals/aggregatemaps.html
The files can also be found on the CD available from MN DNR, Division of Lands and Minerals, under the drive:\data\resource subdirectory (where 'drive' is the CD reader or writer drive on the PC).

Note: the web page also indicates which other counties have been mapped.

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

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: 2007