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Mille Lacs County Aggregate Resource Evaluation - Aggregate Potential - Sand and Gravel Potential - millsgp

This page last updated: 2008
Metadata created using Minnesota Geographic Metadata Guidelines


Metadata Summary

Originator

MN Department of Natural Resources, Division of Lands and Minerals, Mineral Potential Section, Aggregate Resource Mapping Program

Abstract

This dataset consists of information about the geology, geological characteristics, and sand and gravel potential of 226 map units. Five fields relate to the surficial geology of the map unit, including id, sediment, landform, surficial geology description, and dominant lithology. Five fields relate to sand and gravel characteristics, including probability, quality, texture, overburden thickness, and deposit size of the map unit. These characteristics were used to determine the aggregate potential of the map unit for sand and gravel.

Browse Graphic

None available

Time Period of Content Date

2007

Currentness Reference

Data were gathered in the fall of 2005 through the spring of 2006 and compiled in the spring of 2007.

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

The Aggregate Resource Mapping Program's datasets for Mille Lacs County are included in the file milldata.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 datasets include data on sand and gravel potential, crushed stone potential, overburden model source points, field observations, aggregate pits and quarries, County Well Index (CWI) data sources, field observation's sieve database, and MN DOT ASIS pit quality database.

In addition, selected Mille Lacs aggregate resource datasets can be viewed in the Aggregate Resource Mapping Program's Aggregate Mapper at:
http://www.dnr.state.mn.us/lands_minerals/aggregate_maps/online_maps/index.html
Aggregate Mapper allows users with little to no GIS experience the ability to work with GIS data. The site can display spatial and tabular aggregate resource data such as sand and gravel potential, crushed stone potential, field observations, and gravel pits. This information can be overlaid on a variety of reference information from Web Mapping Services (WMS) sources like 1:24,000-scale DRGs (digital topographic maps), 1991 black-and-white air photos, and 2003-04 Farm Service Agency color air photos.

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

Mille Lacs County Aggregate Resource Evaluation - Aggregate Potential - Sand and Gravel Potential - millsgp

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

MN Department of Natural Resources, Division of Lands and Minerals, Mineral Potential Section, Aggregate Resource Mapping Program

Title

Mille Lacs County Aggregate Resource Evaluation - Aggregate Potential - Sand and Gravel Potential - millsgp

Abstract

This dataset consists of information about the geology, geological characteristics, and sand and gravel potential of 148 map units. Five fields relate to the surficial geology of the map unit, including id, sediment, landform, surficial geology description, and dominant lithology. Five fields 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

2007

Currentness Reference

Data were gathered in the fall of 2005 through the spring of 2006 and compiled in the spring of 2007.

Progress

Complete

Maintenance and Update Frequency

None planned

Spatial Extent of Data

Mille Lacs County, Minnesota

Bounding Coordinates

-93.81
-93.43
46.25
45.55

Place Keywords

Mille Lacs County, Minnesota

Theme Keywords

Surficial geology, geological characteristics, aggregate potential, sand and gravel

Theme Keyword Thesaurus

 

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

Aggregate Resource Mapping Program, Industrial Minerals Geologist or GIS Specialist
Minnesota Department of Natural Resources, Division of Lands and Minerals
500 Lafayette Road
St. Paul, MN 55155-4045
Phone: 651-259-5959
FAX: 651-296-5939
E-mail: aggregate.map@dnr.state.mn.us

Browse Graphic

None available

Browse Graphic File Description

 

Associated Data Sets

The Aggregate Resource Mapping Program's datasets for Mille Lacs County are included in the file milldata.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 datasets include data on sand and gravel potential, crushed stone potential, overburden model source points, field observations, aggregate pits and quarries, County Well Index (CWI) data sources, field observation's sieve database, and MN DOT ASIS pit quality database.

In addition, selected Mille Lacs aggregate resource datasets can be viewed in the Aggregate Resource Mapping Program's Aggregate Mapper at:
http://www.dnr.state.mn.us/lands_minerals/aggregate_maps/online_maps/index.html
Aggregate Mapper allows users with little to no GIS experience the ability to work with GIS data. The site can display spatial and tabular aggregate resource data such as sand and gravel potential, crushed stone potential, field observations, and gravel pits. This information can be overlaid on a variety of reference information from Web Mapping Services (WMS) sources like 1:24,000-scale DRGs (digital topographic maps), 1991 black-and-white air photos, and 2003-04 Farm Service Agency color air photos.

 

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 potential map 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 Mille Lacs 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 9.2 and Arcview 3.3 from ESRI

Geographic Reference for Tabular Data

 

Spatial Object Type

Vector

Vendor Specific Object Types

Polygon

Tiling Scheme

Mille Lacs 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

millsgp_att.htm

Attribute values can be found in the following table: millsgp_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

MN Department of Natural Resources, Division of Lands and Minerals, Mineral Potential Section, Aggregate Resource Mapping Program

Publication Date

2008

Contact Person Information

Aggregate Resource Mapping Program
Industrial Minerals Geologist or GIS Specialist
Minnesota Department of Natural Resources, Division of Lands and Minerals
500 Lafayette Road
St. Paul, MN 55155-4045
Phone: 651-259-5959
FAX: 651-296-5939
E-mail: aggregate.map@dnr.state.mn.us

Distributor's Data Set Identifier

Mille Lacs County Aggregate Resource Evaluation

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

mb for data, mb for associated maps

Ordering Instructions

The Aggregate Resource Mapping Program's datasets for Mille Lacs County are included in the file milldata.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 datasets include data on sand and gravel potential, crushed stone potential, overburden model source points, field observations, aggregate pits and quarries, County Well Index (CWI) data sources, field observation's sieve database, and MN DOT ASIS pit quality database.

In addition, selected Mille Lacs aggregate resource datasets can be viewed in the Aggregate Resource Mapping Program's Aggregate Mapper at:
http://www.dnr.state.mn.us/lands_minerals/aggregate_maps/online_maps/index.html
Aggregate Mapper allows users with little to no GIS experience the ability to work with GIS data. The site can display spatial and tabular aggregate resource data such as sand and gravel potential, crushed stone potential, field observations, and gravel pits. This information can be overlaid on a variety of reference information from Web Mapping Services (WMS) sources like 1:24,000-scale DRGs (digital topographic maps), 1991 black-and-white air photos, and 2003-04 Farm Service Agency color air photos.

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

2008

Contact Person Information

Aggregate Resource Mapping Program, Industrial Minerals Geologist or GIS Specialist
Minnesota Department of Natural Resources, Division of Lands and Minerals
500 Lafayette Road
St. Paul, MN 55155-4045
Phone: 651-259-5959
FAX: 651-296-5939
E-mail: aggregate.map@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: 2008