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This page last updated: 04/11/2007
Metadata created using Minnesota Geographic Metadata Guidelines
| 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 aggregate potential of 44 map units. The geology is divided into 4 fields that describe the sources, features, material, and surficial geology unit. The geological characteristics include probability, deposit size, thickness, overburden, texture, and quality. These characteristics were used to calculate the aggregate potential of the unit. |
| Browse Graphic | View a sample of the data. |
| Time Period of Content Date | 1998 |
| Currentness Reference | All data was gathered in the summer and fall of 1998 and compiled in the Fall, Winter, and Spring of 1998-1999. |
| Access Constraints | NA |
| 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 Blue Earth County are available for download in a zipfile, bluedata.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 1: Significant Aggregate Resource Deposits (bl_plate1.pdf), Plate 2: Aggregate Resources (bl_plate2.pdf), Plate 3: Surficial Geology (bl_plate3.pdf), and Plate 4: Data Sources and Mapping Methodologies (bl_plate4.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. |
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 | Blue Earth County Aggregate Resource Evaluation - Aggregate Potential and Surficial Geology | |||
| Abstract | This dataset consists of information about the geology, geological characteristics, and aggregate potential of 44 map units. The geology is divided into 4 fields that describe the sources, features, material, and surficial geology unit. The geological characteristics include probability, deposit size, thickness, overburden, texture, and quality. These characteristics were used to calculate the aggregate potential of the unit. | |||
| Purpose | To summarize the geological characteristics, surficial geology, and aggregate potential of the different units. To help categorize the geological characteristics and incorporate them into a model to help determine the geological potential of the deposit. | |||
| Time Period of Content Date | 1998 | |||
| Currentness Reference | All data was gathered in the summer and fall of 1998 and compiled in the Fall, Winter, and Spring of 1998-1999. | |||
| Progress | Complete | |||
| Maintenance and Update Frequency | None planned | |||
| Spatial Extent of Data | Blue Earth County, Minnesota | |||
| Bounding Coordinates | -94.37 -93.76 44.27 43.84 |
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| Place Keywords | Blue Earth County, Minnesota | |||
| Theme Keywords | geoscientificInformation, Surficial geology, geological characteristics, aggregate potential, sand, gravel, crushed stone | |||
| Theme Keyword Thesaurus | ISO 19115 Topic Category | |||
| Access Constraints | NA | |||
| 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 Blue Earth County is included in the file bluedata.zip, accessible from the MN DNR Aggregate Mapping web page: http://www.dnr.state.mn.us/lands_minerals/aggregatemaps.html |
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| Section 2 | Data Quality Information | Top of full metadata | Top of page | |
| Attribute Accuracy | The units were delineated by the interpretation of aerial photographs at a 1:40,000 scale. These interpretations were plotted on 1:24,000 USGS topographic maps. These delineations and unit descriptions were field checked and revised. This was a reconnasance scale study and was mapped at 1:50,000. | |||
| Logical Consistency | Overshoots and undershoots were fixed by a variety of techniques, thus the lines have been checked and completed. | |||
| Completeness | The units were delineated by aerial photograph interpretations. The potential of the deposit is based on geological factors and not economical factors. Generalizations were made, this is a reconnaissance scale study (1:50,000) | |||
| Horizontal Positional Accuracy | 1:50000 | |||
| Vertical Positional Accuracy | Not applicable. | |||
| Lineage | The first step in determining the distribution of aggregate resources is to understand the surficial geology and the recent geological history of the area. The geological history basically tells us the story, or sequence of events, of when the aggregate and other sediments were deposited. By understanding this story we can determine where the aggregate was deposited, as well as some of the general characteristics about the material. This was accomplished for this study by completing an aerial photograph interpretation of the entire county and confirming these interpretations with over 1,500 water well logs and by observing approximately 450 field sites. Several other data sets and techniques were also used and are described below. These interpretations and observations were then compiled to form a sequence of events to tell the geologic story. Finally, the aggregate bearing landforms were delineated and categorized based on their geological characteristics. | |||
| Source Scale Denominator | 50000 | |||
| Section 3 | Spatial Data Organization Information | Top of full metadata | Top of page | |
| Native Data Set Environment | Arc/INFO 7.2.1 and Arcview 3.1 from ESRI | |||
| Geographic Reference for Tabular Data | ||||
| Spatial Object Type | Vector | |||
| Vendor Specific Object Types | Polygon | |||
| Tiling Scheme | Blue Earth 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/sg99xpy3_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 | 1999 | |||
| 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 |
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| Distributor's Data Set Identifier | sg99xpy3 | |||
| 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 | 9.4 mb for data, 7.6 mb for associated maps | |||
| Ordering Instructions | This and other aggregate resource data layers for Blue Earth County are available for download in a zipfile, bluedata.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 1: Significant Aggregate Resource Deposits (bl_plate1.pdf), Plate 2: Aggregate Resources (bl_plate2.pdf), Plate 3: Surficial Geology (bl_plate3.pdf), and Plate 4: Data Sources and Mapping Methodologies (bl_plate4.pdf). Note: the web page also indicates which other counties have been mapped. |
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| 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 | 04/11/2007 | |||
| 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 |
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| 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: 04/11/2007