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This
page last updated: 2008
Metadata created using Minnesota
Geographic Metadata Guidelines
Originator |
MN Department of Natural
Resources, Division of Lands and Minerals, Mineral Potential Section,
Aggregate Resource Mapping Program |
Abstract |
This dataset includes 654 data
points used in a spatial analytical overburden model within Mille Lacs
County, Minnesota using ESRI GIS software. This dataset and subsequent raster
overburden model were captured and developed to assist in determining crushed
stone potential in Mille Lacs County, MN. Overburden data were gathered from
field observations, NRCS soil surveys, exploratory drillings, Minnesota
Geological Survey (MGS) bedrock outcrops, as well as from the County Well
Index database. Field observations of bedrock outcrops were gathered in the
field, and later digitized using ArcGIS 9.2. Soil survey data were downloaded
in 2005 and queried for bedrock outcrops. MGS bedrock outcrop data were
obtained from Terry Boerboom at MGS in 2005. Field verified County Well Index
(CWI) data were downloaded in October of 2006. CWI contains spatially located
data of wells drilled throughout Minnesota. An additional County Well Index
dataset was downloaded that contains unlocated well data. CWI 'unlocated'
well data has not been field verified, however they have been approximately
located using the Public Land Survey (PLS) information provided on the CWI
well log. The MN DNR selected and approximately located relevant unlocated
wells that either encountered bedrock or didn't encounter bedrock, but would
help sink the overburden model, known as minima. The MN DNR located
approximately these wells using the following sources: Minnesota Department
of Health CWI online, Mille Lacs County plat maps, 2005 FSA Air Photos,
www.mapquest.com, www.infospace.com, and Mille Lacs County Parcel Tax data
found at http://morris.state.mn.us/tax/
To approximately locate a well, a combination of these sources were utilized
to corroborate a location. |
Browse Graphic |
None available |
Time Period of Content Date |
2006 |
Currentness Reference |
Data were gathered
throughout 2005 and 2006. |
Access Constraints |
|
Use Constraints |
Acknowledgement of the Minnesota
Geological Survey (MGS) and the Minnesota Department of Health is appreciated
for products derived from CWI 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
|
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
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Section 1 |
Identification
Information |
|
|
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 - Overburden Model Data Points - millobmodl |
||
Abstract |
This dataset includes 654
data points used in a spatial analytical overburden model within Mille Lacs
County, Minnesota using ESRI GIS software. This dataset and subsequent raster
overburden model were captured and developed to assist in determining crushed
stone potential in Mille Lacs County, MN. Overburden data were gathered from
field observations, NRCS soil surveys, exploratory drillings, Minnesota
Geological Survey (MGS) bedrock outcrops, as well as from the County Well
Index database. Field observations of bedrock outcrops were gathered in the
field, and later digitized using ArcGIS 9.2. Soil survey data were downloaded
in 2005 and queried for bedrock outcrops. MGS bedrock outcrop data were
obtained from Terry Boerboom at MGS in 2005. Field verified County Well Index
(CWI) data were downloaded in October of 2006. CWI contains spatially located
data of wells drilled throughout Minnesota. An additional County Well Index dataset
was downloaded that contains unlocated well data. CWI 'unlocated' well data
has not been field verified, however they have been approximately located
using the Public Land Survey (PLS) information provided on the CWI well log.
The MN DNR selected and approximately located relevant unlocated wells that
either encountered bedrock or didn't encounter bedrock, but would help sink
the overburden model, known as minima. The MN DNR located approximately these
wells using the following sources: Minnesota Department of Health CWI online,
Mille Lacs County plat maps, 2005 FSA Air Photos, www.mapquest.com,
www.infospace.com, and Mille Lacs County Parcel Tax data found at http://morris.state.mn.us/tax/
To approximately locate a well, a combination of these sources were utilized
to corroborate a location. |
||
Purpose |
To summarize overburden
data, including depth and stratigraphy, from all viable sources, to assist in
the development of an overburden model and to interpret and map crush stone
potential for Mille Lacs County, MN. |
||
Time Period of Content Date |
2006 |
||
Currentness Reference |
Data were gathered
throughout 2005 and 2006. |
||
Progress |
Complete |
||
Maintenance and Update Frequency |
None planned |
||
Spatial Extent of Data |
Mille Lacs County, Minnesota
|
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Bounding Coordinates |
-93.81 |
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Place Keywords |
Mille Lacs County, Minnesota
|
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Theme Keywords |
bedrock, overburden, spatial
modeling, county well index, crush stone potential |
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Theme Keyword Thesaurus |
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Access Constraints |
|
||
Use Constraints |
Acknowledgement of the Minnesota
Geological Survey (MGS) and the Minnesota Department of Health is appreciated
for products derived from CWI data. |
||
Contact Person Information |
Aggregate Resource Mapping
Program, Industrial Minerals Geologist or GIS Specialist |
||
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
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Section 2 |
Data Quality Information |
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Attribute Accuracy |
The location accuracy of
these points varies based on source and methodology. The attribute field,
'Confidence', attempts to describe generally the location accuracy for each
point based on its source. See millobmodl_att table for more detail regarding
the 'Confidence' and 'Modl_Sourc' field. Additionally, see the lineage
section in the metadata for further information how the data was acquired and
mapped. |
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Logical Consistency |
|
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Completeness |
|
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Horizontal Positional Accuracy |
|
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Vertical Positional Accuracy |
Not applicable. |
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Lineage |
Field Observations of
bedrock outcrops were mapped in the field on to 1:24000 Topographic maps and later
digitized onto Digital Raster Graphics (DRGs) at 1:24000. CWI located data is
maintained by the Minnesota Geological Survey. For further information about
this source visit the Minnesota Geological Survey CWI page at: http://www.geo.umn.edu/mgs/cwi.html
|
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Source Scale Denominator |
24000 |
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Section 3 |
Spatial Data Organization
Information |
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Native Data Set Environment |
ArcGIS 9.2 and Arcview 3.3
from ESRI |
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Geographic Reference for Tabular Data |
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Spatial Object Type |
Point |
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Vendor Specific Object Types |
Point |
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Tiling Scheme |
Mille Lacs County |
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Section 4 |
Spatial Reference
Information |
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Horizontal Coordinate Scheme |
UTM |
||
Ellipsoid |
GRS80 |
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Horizontal Datum |
NAD83 |
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Horizontal Units |
Meters |
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Distance Resolution |
|
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Altitude Datum |
Not applicable |
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Depth Datum |
Not applicable |
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UTM Zone Number |
15E |
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Section 5 |
Entity and Attribute
Information |
||
Entity and Attribute Overview |
This dataset consists of Mille
Lacs County's overburden model source locations, unique model id, source
type, surface elevation, bedrock and minima elevation, overburden depth,
Geologic description of bedrock or minima, confirmation of bedrock,
confidence of well location, CWI relateid, and if bedrock can be used for
construction aggregate. ArcGIS specific fields include field id (unique id
assigned by the ESRI software) and shape (feature type = point). |
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Entity and Attribute Detailed Citation |
millobmodl_att.htm |
||
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Section 6 |
Distribution Information |
||
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 |
||
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. |
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Transfer Format Name |
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Transfer Format Version Number |
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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
|
||
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. |
||
|
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Section 7 |
Metadata Reference
Information |
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Metadata Date |
2008 |
||
Contact Person Information |
Aggregate Resource Mapping
Program, Industrial Minerals Geologist or GIS Specialist |
||
Metadata Standard Name |
Minnesota Geographic
Metadata Guidelines |
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Metadata Standard Version |
1.2 |
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Metadata Standard Online Linkage |
This page last updated: 2008