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This page last updated: 04/06/2007
Metadata created using Minnesota Geographic Metadata Guidelines
| Originator | Minnesota Geological Survey |
| Abstract | A County Geologic Atlas is a systematic study of a county's geologic and ground water resources. Geologic studies include both near-surface deposits and bedrock. Ground water studies include flow systems, aquifer capacity, and ground water chemistry. In some areas sand and gravel deposits, sinkholes, or other features are studied. Interpretation of sensitivity to pollution is also part of an atlas. The information is organized, analyzed, and displayed using geographic information technology. |
| Browse Graphic | View a sample of the data. |
| Time Period of Content Date | 1992 |
| Currentness Reference | Geologic linework delineated based on data available in 1991-1992. |
| Access Constraints | None |
| Use Constraints | Credit given to the Minnesota Geological Survey and Ramsey County for use of data in map products. |
| Distributor Organization | Minnesota Geological Survey |
| Ordering Instructions | Data is available for free online download from Minnesota Geological Survey ftp site. See online linkage field. All arc export files and access files are at this location. File, index.txt, gives a file listing. |
| 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 | Minnesota Geological Survey | |||
| Title | Ramsey County Geologic Atlas | |||
| Abstract | A County Geologic Atlas is a systematic study of a county's geologic and ground water resources. Geologic studies include both near-surface deposits and bedrock. Ground water studies include flow systems, aquifer capacity, and ground water chemistry. In some areas sand and gravel deposits, sinkholes, or other features are studied. Interpretation of sensitivity to pollution is also part of an atlas. The information is organized, analyzed, and displayed using geographic information technology. | |||
| Purpose | County Geologic Atlas and Regional Hydrogeologic Assessment information is used in planning and environmental protection efforts at all levels of government. Wellhead protection and well-sealing programs are examples of local programs that need geologic and ground water information. The information is also used by businesses and the general public. | |||
| Time Period of Content Date | 1992 | |||
| Currentness Reference | Geologic linework delineated based on data available in 1991-1992. | |||
| Progress | Complete | |||
| Maintenance and Update Frequency | None planned | |||
| Spatial Extent of Data | Ramsey County, Minnesota | |||
| Bounding Coordinates | -93.23 -92.98 45.13 44.88 |
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| Place Keywords | Ramsey County, Minnesota, Twin Cities Metropolitan Area | |||
| Theme Keywords | geoscientificInformation, Bedrock Geology, Surficial Geology, Quaternary Geology, Bedrock Topography, Water Table Contours, Ground Water Levels, Wells, Pollution Sensitivity | |||
| Theme Keyword Thesaurus | ISO 19115 Topic Category | |||
| Access Constraints | None | |||
| Use Constraints | Credit given to the Minnesota Geological Survey and Ramsey County for use of data in map products. | |||
| Contact Person Information | Joyce Meints,
Minnesota Geological Survey 2642 University Avenue St. Paul, Minnesota 55114 Phone: 612-627-4780 Ext. 214 FAX: E-mail: meint002@maroon.tc.umn.edu | |||
| Browse Graphic | View a sample of the data. | |||
| Browse Graphic File Description | ||||
| Associated Data Sets | C-7. Geologic atlas of Ramsey County, Minnesota. G.N. Meyer and L. Swanson, eds. 1992. 10 pls. Scale 1:48,000 and smaller. $12.50. Folded copies only. Some digital files available, no metadata. Paper map and report available from the MGS Map Sales Office (2642 University Avenue, St. Paul, Minnesota, 55114, 612-627-4782) Some of the Ramsey County bedrock geology information has been updated, revised and combined with data from the other six metro counties to form several seamless metro geology data sets for the Twin Cities Metropolitan Ground Water Model at the Minnesota Pollution Control Agency (1996-2000). Information about data available online and on CD is available at the Metro Model website: http://www.pca.state.mn.us/water/groundwater/metromodel.html Metadata for this project is at http://www.lmic.state.mn.us/chouse/metadata/gwmodel.html For a listing of other geologic maps go to the Minnesota Geological Survey website at http://www.geo.umn.edu/mgs/ For a listing of the status of the DNR Ground Water Mapping Program, go to: http://www.dnr.state.mn.us/waters/groundwater_section/mapping/index.html |
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| Section 2 | Data Quality Information | Top of full metadata | Top of page | |
| Attribute Accuracy | ||||
| Logical Consistency | ||||
| Completeness | ||||
| Horizontal Positional Accuracy | ||||
| Lineage | Investigations begin with a review of existing information, such as earlier geologic maps, soil maps, and hydrologic reports. Drillers send water well logs to the Minnesota Geological Survey, where they are reviewed, interpreted, and entered into the County Well Index (CWI), an interactive data base of water-well information. Building on the previous data, field studies are conducted to improve the understanding of local geologic and hydrologic conditions. Linework is created based upon the field studies and base data, and digitized. Background GIS data layers such as roads, surface hydrography, township grids, etc., are obtained from various sources, as noted in the Entity/Attribute section. | |||
| Source Scale Denominator | 48000 | |||
| Section 3 | Spatial Data Organization Information | Top of full metadata | Top of page | |
| Native Data Set Environment | Arc/INFO Unix environment | |||
| Geographic Reference for Tabular Data | ||||
| Spatial Object Type | Vector | |||
| Vendor Specific Object Types | Point, Vector, Polygon | |||
| Tiling Scheme | Ramsey County | |||
| Section 4 | Spatial Reference Information | Top of full metadata | Top of page | |
| Horizontal Coordinate Scheme | UTM | |||
| Ellipsoid | Clarke 1866 | |||
| Horizontal Datum | NAD27 | |||
| Horizontal Units | Meters | |||
| Distance Resolution | ||||
| UTM Zone Number | 15E | |||
| Coordinate Offsets or Adjustments | Y-shift 0f -4,700,000 meters | |||
| Section 5 | Entity and Attribute Information | Top of full metadata | Top of page | |
| Entity and Attribute Overview | Index of coverages for Ramsey County Geological Atlas 1992 These covers were digitized as a pilot project to accompany the Ramsey County Geological Atlas paper maps. The covers do not have metadata because they were completed before it became a requirement for digital data. ** Ramsey county coverages bgpg = polygon cover of bedrock geology, scale 1:48,000 sgpg = polygon cover of surficial geology (1:48,000) btln = line cover of bedrock topography wtln = line cover of water table contours pspgwt = polygon cover of pollution sensitivity of water table pspgopcj = polygon cover of pollution sensitivity of Prairie du Chien-Jordan aquifer wwpt = point cover of water well locations wwptcwi = point cover of water wells with cwi attributes ** Base layers ** county = county boundary [DOT?] c62cnty = poly cover of county border (digitized from 1:24,000?) c62sect = poly cover of sections (digitized from 1:24,000?) pls = poly/line cover of public land survey [DNR] hydro = rivers/lake boundaries [TIGER] rdln = major roads (modified from TIGER) |
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| Entity and Attribute Detailed Citation | Metadata for individual layers is not available. Contact MGS with questions. | |||
| Section 6 | Distribution Information | Top of full metadata | Top of page | |
| Publisher | Minnesota Geological Survey | |||
| Publication Date | 1992 | |||
| Contact Person Information | Joyce Meints Minnesota Geological Survey 2642 University Avenue St. Paul, Minnesota 55114 Phone: 612-627-4780 Ext. 214 FAX: E-mail: meint002@maroon.tc.umn.edu |
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| Distributor's Data Set Identifier | c07rams | |||
| Distribution Liability | ||||
| Transfer Format Name | Coverages are in Arc/Info Export. County Well Index is in Microsoft Access format. | |||
| Transfer Format Version Number | ||||
| Transfer Size | 28 MB, (total of all files, arc/INFO export, uncompressed.) | |||
| Ordering Instructions | Data is available for free online download from Minnesota Geological Survey ftp site. See online linkage field. All arc export files and access files are at this location. File, index.txt, gives a file listing. | |||
| 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 | 04/06/2007 | |||
| Contact Person Information | Susanne Maeder,
GIS Data Coordinator Minnesota Land Management Information Center (LMIC) 300 Centennial Building; 658 Cedar Street St. Paul, Minnesota 55155 Phone: 651.201.2488 FAX: 651.296.3698 E-mail: clearing.house@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: 04/06/2007