Pope County Geologic Atlas Part B

Minnesota DNR Waters
County Geologic Atlas and Regional Hydrogeologic Assessment Program

Description of data created for
Pope County Geologic Atlas, Part B, CGA-15

AQBWTHPY – Modeled Thickness of Sand and Gravel of the BROW Aquifer

Metadata created using Minnesota Geographic Metadata Guidelines version 1.2
Metadata content prepared 2006-10-24


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

Originator

Minnesota DNR Waters - County Geologic Atlas and Regional Hydrogeologic Assessment Program

Title

AQBWTHPY

 

System Name

 

Abstract

Modeled thickness of sand and gravel deposits on top of the Browerville Formation in Pope County, Minnesota

Purpose

County Geologic Atlas and Regional Hydrogeologic Assessment Program,
Pope County Geologic Atlas, Part B, County Geologic Atlas Series C-15

Time Period of Content Date

July, 2006

Currentness Reference

Publication date

Progress

Complete

Maintenance and Update Frequency

None Planned

Spatial Extent of Data

Pope County, Minnesota

Bounding Coordinates

East

-95.8

West

-95.1

North

45.8

South

45.4

Place Keywords

Minnesota, Pope County

Theme Keywords

Sand and gravel thickness, BROW aquifer

Theme Keyword Thesaurus

None

Access Constraints

None

Use Constraints

Users may wish to verify critical information; sources include both the references here and information on file in the offices of the Minnesota Geological Survey and the Department of Natural Resources. Every effort has been made to ensure the interpretation shown conforms to sound geologic and cartographic principles. This map should not be used to establish legal title, boundaries, or locations of improvements.

Contact Person Information

See Metadata Reference Information section, below

Browse Graphic File Name

 

Browse Graphic File Description

 

Associated Data Sets

Pope County Geologic Atlas, Part A, County Geologic Atlas Series C-15, published by the Minnesota Geological Survey, 2003. More information and downloadable data for Part A available on the MGS ftp site.The preceeding link is to a non-DNR site

 

Section 2

Data Quality Information - - - - - - top

Attribute Accuracy

 

Logical Consistency

Data are topologically correct using ArcGIS 9.1

Completeness

Complete

Horizontal Positional Accuracy

unknown

Vertical Positional Accuracy

not applicable

Lineage

The primary data used to construct the thickness DEM grid file was derived from located and unlocated well logs in the county well index (CWI) which was supplemented by test boring logs from the US Geological Survey and surface resistivity data that were collected by DNR Waters personnel during the summers of 2004 and 2005. These data were combined into two data files with location, elevation, and depth and lithology information. Using a custom ArcGIS 9 extension (DNR Waters Stick Diagrams) 39 west-east geologic cross sections were created, interpreted, and Jim Berg digitized the stratigraphic contacts as line files in ArcView 3.3. Using another custom DNR extension (DNR Waters get XYZ points) the vertices of the shapefile lines were converted to point shapefiles that also have elevation above MSL as an attribute. To create this file, the points that defined the base of the BROW sand layer were selected. These points were converted to a separate shapefile that was interpolated by Jim Berg using a spline tension method with default parameters in Arc GIS 9.1 into a grid file that represents the bottom of the BROW sand. A second point file was created to represent the bottom elevation of the overlying Crow Wing River group. These points were also interpolated using a spline tension method with default parameters in Arc GIS 9.1. The BROW sand bottom DEM was subtracted from the Crow Wing River group bottom DEM to produce a thickness grid file of the BROW sand. The final raster was converted to a polygon shapefile.

Source Scale Denominator

100000

 

Section 3

Spatial Data Organization Information - - - - - - top

Native Data Set Environment

ArcGIS 9.1

Geographic Reference for Tabular Data

Not Applicable

Spatial Object Type

Vector

Vendor Specific Object Types

polygon

Tiling Scheme

state

 

Section 4

Spatial Reference Information - - - - - - top

Horizontal Coordinate Scheme

UTM

Ellipsoid

GRS1980

Horizontal Datum

NAD83

Horizontal Units

meters

Distance Resolution

meters

Altitude Datum

n/a

Altitude Units

n/a

Depth Datum

n/a

Depth Units

n/a

Cell Width

0

Cell Height

0

Latitude Resolution

0

Longitude Resolution

0

UTM Zone Number

15

SPCS Zone Identifier

0

County Coordinate Zone Identifier

0

Coordinate Offsets or Adjustments

n/a

Map Projection Name

n/a

Map Projection Parameters

n/a

Other Coordinate System's Definition

n/a

 

Section 5

Entity and Attribute Information - - - - - - top

Entity and Attribute Overview

 

Entity and Attribute Detailed Citation

HTML Table (Not Available)

aqbwthpy

 

 

 

Thick
(representing modeled thickness of
sand and gravel deposits in feet)

0-20
20-40
40-60
60-80
80-100
100-120

 

Section 6

Distribution Information - - - - - - top

Publisher

Minnesota DNR Waters

Publication Date

2006

Contact Person Information

See Metadata Reference Information section, below

Distributor's Data Set Identifier

aqbwthpy

Distribution Liability

This map was prepared from publicly available information only. Every reasonable effort has been made to ensure the accuracy of the factual data on which this map is based. However, the Department of Natural Resources does not warrant the accuracy, completeness, or any implied uses of these data.

Users may wish to verify critical information; sources include both the references here and information on file in the offices of the Minnesota Geological Survey and the Department of Natural Resources. Every effort has been made to ensure the interpretation shown conforms to sound geologic and cartographic principles. This map should not be used to establish legal title, boundaries, or locations of improvements.

Transfer Format Name

shapefile

Transfer Format Version Number

Transfer Size

Ordering Instructions

Download ARCVIEW shapefiles from:
Pope County Geologic Atlas, Part B: Metadata for GIS and Digital Data

Online Linkage

Pope County Geologic Atlas, Part B: Metadata for GIS and Digital Data

 

Section 7

Metadata Reference Information - - - - - - top

Metadata Date

2006-10-24

Contact Person Information

GIS Specialist, Atlas/Assessment Program
Minnesota DNR - Division of Waters
500 Lafayette Road
Saint Paul, MN 55155
Phone: (651) 259-5693
FAX: (651) 296-0445
E-mail:

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

 

 

 

 

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