| - Full Metadata - | - View Attributes - | - View Sample - | - Get Data - |
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 surficial geology and aggregate resource potential, based on geological factors. This work is authorized by Minnesota Statute 84.94. |
| Browse Graphic | View a sample of the data. |
| Time Period of Content Date | 1990 |
| Currentness Reference | Air photo interpretation 1990-1991, field work summers of 1990 and 1991. |
| 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 Isanti County are available for download in a zipfile, isandata.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: Aggregate Resources (isanapot.pdf) and Aggregate Resources and Quaternary Geology (isanqgeo.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 | Isanti County Aggregate Resource Evaluation - Aggregate Potential and Surficial Geology | |||
| Abstract | This dataset consists of information about surficial geology and aggregate resource potential, based on geological factors. This work is authorized by Minnesota Statute 84.94. | |||
| Purpose | To summarize the aggregate resource potential of the various mapping units. | |||
| Time Period of Content Date | 1990 | |||
| Currentness Reference | Air photo interpretation 1990-1991, field work summers of 1990 and 1991. | |||
| Progress | Complete | |||
| Maintenance and Update Frequency | None planned | |||
| Spatial Extent of Data | Isanti County, Minnesota | |||
| Bounding Coordinates | -93.51 -93.01 45.74 45.41 |
|||
| Place Keywords | Isanti County, Minnesota | |||
| Theme Keywords | geoscientificInformation, surficial geology, geological characteristics, aggregate potential | |||
| 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 | Dennis Martin (or Renee Johnson),
Manager, Mineral Potential Section (or GIS Specialist) Minnesota Department of Natural Resources, Division of Lands and Minerals 500 Lafayette Road St. Paul, MN 55155-4045 Phone: 651-296-4807 FAX: 651-296-5939 E-mail: dennis.martin@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 Isanti County is included in the file isandata.zip, accessible from the MN DNR Aggregate Mapping web page: http://www.dnr.state.mn.us/lands_minerals/aggregatemaps.html |
|||
| Section 2 | Data Quality Information | Top of full metadata | Top of page | |
| Attribute Accuracy | The mapping units were compiled onto 1:24,000 USGS topographic maps. These delineations and unit descriptions were field checked and revised. The coverage was created by digitizing the delineations after registering the USGS maps on a digitizing table. | |||
| 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 deposits is based on geologic factors, not economic factors. Generalizations were made, resulting in a product that should be considered reconnaissance level and accurate to a scale of 1:70,000. | |||
| Horizontal Positional Accuracy | 1:70000 | |||
| Vertical Positional Accuracy | Not applicable. | |||
| Lineage | These shapefiles are part of Minnesota Department of Natural Resources, Minerals Division, Report 304, Aggregate Resources and Quaternary Geology, 1992, by JD Lehr. The data were compiled in a multi-step process. The first step developed a preliminary Quaternary geology legend after a review of the literature of glacial geology in east-central Minnesota. The map units were based on the principle that glacial depositional environments can be mapped based upon their landform expression. Additional map units were included to provide detail within potential aggregate units. Next, subsurface data were added to the compilation maps to supplement the geologic inferences, including well logs, stored in a database at the Minnesota Geological Survey entitled County Well Index (i.e., CWI) and Minnesota Department of Transportation gravel pit sheets, including shallow (10-40') test-hole logs, sieve, and quality test data. Gravel pit locations were also added to the compilation maps and were gathered from a number of sources, including the Soil Survey of Isanti County (from the Soil Conservation Service), 15-minute USGS topographic maps, Minnesota Department of Transportation Isanti County Highway Map, Isanti County Highway Department, and field observations by the author, JD Lehr. At this point, mapping units were delineated on 1:24000 USGS topographic maps using stereographic photo pairs at a scale of 1:90000. During the summers of 1990 and 1991, the author made observations of the landform expression and surficial sediment, as exposed in gravel pits, road cuts, natural exposures, and excavations. Where exposures were lacking, sediment from shallow, hand-augured holes were described. After the field work, the compilation maps were reexamined in relation to the air photos, scholarly review, and the plotted subsurface data, and adjustments were made to the mapping units as necessary. |
|||
| Source Scale Denominator | 62500 | |||
| 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 | Isanti 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, based on geological factors. | |||
| Entity and Attribute Detailed Citation | ftp://ftp.lmic.state.mn.us/pub/dnr/attributes/sg92xpy3_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 | 1992 | |||
| Contact Person Information | Dennis Martin Manager, Mineral Potential Section Minnesota Department of Natural Resources, Division of Lands and Minerals 500 Lafayette Road St. Paul, MN 55155-4045 Phone: 651-296-4807 FAX: 651-296-5939 E-mail: dennis.martin@dnr.state.mn.us |
|||
| Distributor's Data Set Identifier | sg2xpy3 | |||
| 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 | 2.9 mb for data, 3.3 mb for the associated maps | |||
| Ordering Instructions | This and other aggregate resource data layers for Isanti County are available for download in a zipfile, isandata.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: Aggregate Resources (isanapot.pdf) and Aggregate Resources and Quaternary Geology (isanqgeo.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 | 04/11/2007 | |||
| Contact Person Information | Renee Johnson,
GIS Specialist Minnesota Department of Natural Resources, Division of Lands and Minerals 500 Lafayette Road St. Paul, MN 55155-4045 Phone: 651-296-4807 FAX: 651-296-5939 E-mail: renee.johnson@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: 04/11/2007