Info: Bedrock Geology
Symbology:

 

Bedrock Geology of Iowa

Metadata also available as

Metadata:
Identification_Information:
Citation:
Citation_Information:
Originator: Bernard Hoyer
Publication_Date: 02/01/89
Title: Bedrock Geology of Iowa
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Iowa City, IA
Publisher: Iowa Department of Natural Resources
Online_Linkage:
<ftp://ftp.igsb.uiowa.edu/gis_library/IA_State/Geologic/Bedrock/bedrock_geology.zip>
Description:
Abstract:
This coverage represents the areas were bedrock units outcrop at the land surface or subcrop in the subsurface beneath the glacial drift.
Purpose:
This digital, geographically referenced data set was developed by the Iowa Department of Natural Resources to carry out agency responsibilities related to management, protection, and development of Iowa's natural resources.
Supplemental_Information: Originally digitized with AutoCad and converted to Arc/Info
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 01/08/97
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -96.684901
East_Bounding_Coordinate: -90.069432
North_Bounding_Coordinate: 43.557019
South_Bounding_Coordinate: 40.332776
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: None
Access_Constraints: None
Use_Constraints: None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Ray Anderson
Contact_Organization: Iowa Department of Natural Resources
Contact_Address:
Address: 109 Trowbridge Hall
City: Iowa City
State_or_Province: IA
Postal_Code: 52242-1319
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.3.0.800
Data_Quality_Information:
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Highways 65 & 69 are missing through Des Moines. There are minor, undocumented errors in this coverage, mostly having to do with missing vertices in curved segments of roads. They appear as unusually straight segments.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Title: None
Source_Scale_Denominator: 500,000
Type_of_Source_Media: Paper
Process_Step:
Process_Description:
Original digitized data converted from AutoCAD files via .dxf format files
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 1319
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 15
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -93.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.001024
Ordinate_Resolution: 0.001024
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: bedrock_geology
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: AREA
Attribute:
Attribute_Label: PERIMETER
Attribute:
Attribute_Label: BRGEO500_
Attribute:
Attribute_Label: BRGEO500_I
Attribute:
Attribute_Label: BRGEO500_1
Attribute:
Attribute_Label: BRGEO500_2
Attribute:
Attribute_Label: MAPNAME
Attribute:
Attribute_Label: VALUE
Attribute:
Attribute_Label: COUNTY_
Attribute:
Attribute_Label: COUNTY_ID
Attribute:
Attribute_Label: CO_NUMBER
Attribute:
Attribute_Label: CO_NAME
Overview_Description:
Entity_and_Attribute_Overview:
AREA: Area of polygon in square meters

PERIMETER: Perimeter length of polygon in meters

BRGEO500_: Sequential number of polygon assigned by Arc/Info

BRGEO500_ID: Identification numbers assigned sequentially from various arbitrary numbers to group polygons representing the same geologic unit

MAPNAME: Standard geologic abbreviations for stratigraphic units which represent time and rock units as used on the published map:

Mapname Stratigraphic Unit (Value)

Kcd Colorado and Dakota Groups (30)

Ku Cretaceous Undifferentiated (29)

Jfd Ft.Dodge Beds (28)

Pw Wabaunsee Group (27)

Ps Shawnee Group (26)

Pd Douglas Group (25)

Pl Lansing Group (24)

Pkc Kansas City Group (23)

Pp Pleasanton Group (22)

Pm Marmation Group (21)

Pch Cherokee Group (20)

Mm Meramec Series (19)

Mo Osage Series (18)

Mk Kinderhook Series (17)

Dys Yellow Spring Group (16)

Dlc Lime Creek Formation (15)

Dsq State Quarry Limestone (14)

Dsr Shell Rock Formation (13)

Dcv Cedar Valley Limestone (12)

Dw Wapsipinicon Formation (11)

Dlp LaPorte City Chert (10)

Sn Niagaran Series (9)

Sa Alexandrian Series (8)

Om Maquoketa Formation (7)

Ogdp Galena-Decorah-Platteville Formations (6)

Osp St. Peter Sandstone (5)

Opc Prairie du Chien Formation (4)

Csc St. Croixan Series (3)

PCc Crystalline Rocks (2)

PCs Sioux Quartzite (1)

VALUE: Numerical representation of geologic column; 1 is oldest and 30 is youngest. Numbers are shown in parenthesis ( ) after the name above.

None

Distribution_Information:
Distributor:
Resource_Description: Bedrock_geology
Distribution_Liability:
This digital, geographically referenced data set was developed by the Iowa Department of Natural Resources to carry out agency responsibilities related to management, protection, and development of Iowa's natural resources. It resides in the Natural Resources Geographic Information System library. Although efforts have been made to make it useful to the Department, the Department assumes no responsibility for errors in the information. Similarly the Department assumes no responsibility for the consequences of inappropriate uses or interpretations of the data made by anyone to whom this data has been made available. The Department bears no responsibility to inform users of any changes made to this data. Anyone using this data is advised that precision implied by the coverage may far exceed actual precision. Comments on this data are invited and the Department would appreciate that documented errors be brought to staff attention. The development of the coverages in the NRGIS Library represents a major investment of staff time and effort. As a professional responsibility, we expect that the Iowa DNR will receive proper credit when you utilize these GIS coverages and that the original documentation will remain with any redistribution of these coverages.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Version_Date: 01/08/97
Transfer_Size: 1.926
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<ftp://ftp.igsb.uiowa.edu/gis_library/IA_state/Geologic/Bedrock/Bedrock_geology.zip>
Metadata_Reference_Information:
Metadata_Date: 20031105
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Iowa Department of Natural Resources - Geological Survey
Contact_Person: Casey Kohrt
Contact_Address:
Address_Type: Mailing and Physical
Address: 109 Trowbridge Hall
City: Iowa City
State_or_Province: IA
Postal_Code: 52242-1319
Contact_Voice_Telephone: 319-335-1353
Contact_Electronic_Mail_Address: gis_library@igsb.uiowa.edu
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile