bedrock

Citation:

Citation Information:

Originator: Maine Department of Conservation (MEDOC), Maine Geological Survey (MGS)
Publication Date: 19950101
Publication Time: Unknown
Title: bedrock
Geospatial Data Presentation Form: vector digital data
Series Information:

Series Name: Maine GIS
Issue Identification: SDE server; Internet Data Catalog

Publication Information:

Publication Place: Augusta ME
Publisher: Maine Office of Geographic Information Systems

Other Citation Details: 1:500000 Bedrock UNIT codes assigned to this coverage are available in comma delimited text, and .dbf format, on the MEGIS Data Catalog at http://megis.maine.gov/catalog/ .
Online Linkage: http://megis.maine.gov/catalog/

Description:

Abstract:
BEDROCK maps bedrock geology units and major faults for Maine at 1:500,000 scale. The dataset was developed by the Maine Geological Survey (MGS) from the "Bedrock Geologic Map of Maine, Osberg, Hussey, and Boone, 1985". The data for this dataset were scanned off 1:500,000 scale mylars by the United States Geological Survey (USGS) in 1987. The original bedrock unit codes were added by the J.W. Sewall Co. in 1990 for the Maine Low-Level Radioactive Waste Authority. In 1994, staff at MGS identified and added codes for major bedrock faults. Bedrock UNIT codes assigned to this dataset are available in comma delimited text, and .dbf format, on the Maine GIS Data Catalog at http://megis.maine.gov/catalog/
Purpose:
Bedrock is the digital representation of the paper map "Bedrock Geologic Map of Maine, Osberg, Hussey and Boone, 1985" and could be used for various purposes related to statewide geological studies and planning.
Time Period of Content:

Time Period Information:

Range of Dates/Times:

Beginning Date: 12/31/1985
Ending Date: 12/31/1994

Currentness Reference: source dates

Status:

Progress: Complete
Maintenance and Update Frequency: None planned

Spatial Domain:

Bounding Coordinates:

West Bounding Coordinate: -71.00653
East Bounding Coordinate: -66.80309
North Bounding Coordinate: 47.43875
South Bounding Coordinate: 43.05916

Keywords:

Theme:

Theme Keyword Thesaurus: Maine GIS Thesaurus-Theme
Theme Keyword: geology
Theme Keyword: fault
Theme Keyword: bedrock

Theme:

Theme Keyword Thesaurus: ISO Keyword Thesaurus
Theme Keyword: geoscientificInformation
Theme Keyword: imageryBaseMapsEarthCover

Place:

Place Keyword Thesaurus: Maine GIS Thesaurus-Place
Place Keyword: Maine
Place Keyword: United States

Stratum:

Stratum Keyword Thesaurus: GCMD Parameter Keyword
Stratum Keyword: solid earth

Access Constraints:
Secondary distribution by permission only. Please see Maine Office of Geographic Information Systems (MEGIS) License Agreement at http://megis.maine.gov/ . Any secondary distribution must have this documentation appended.
Use Constraints:
Users must assume responsibility in determining the usability of this data for their purposes. Digital maps retain the accuracy of their source materials. The best use of data mapped at scales of 1:500,000 and 1:250,000 is in statewide planning and studies; at 1:100,000 in regional planning and studies; at 1:62,500 and 1:24,000 in detailed studies and local planning; and at 1:12,000 and 1:5,000 or larger scales in parcel level studies and detailed local planning. In the use of Maine GIS data, please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the correct copy of both data and metadata from the Maine GIS Data Catalog. The Maine Office of Geographic Information Systems (MEGIS) provides notice of updates and corrections directly to the Maine GIS Technical Group and Maine GIS Users, through the MEGISTECH and MEGISUSER list servers. To subscribe please contact MeGIS through the Maine Office of Information Technology (OIT) Customer Support Center (CSC) at (207) 624-7700. To request data correction in, or provide updates to Maine GIS data, please use the contact information contained in the metadata. Updates, corrections, and feedback, incorporated in the Maine GIS database are made in accordance with "Data Standards for Maine Geographic Information Systems", 2002, and coordinated by MEGIS in consultation with the Maine GIS Executive Council.
Point of Contact:

Contact Information:

Contact Organization Primary:

Contact Organization: (MEDOCMGS) Maine Department of Conservation, Maine Geological Survey
Contact Person: Director, Earth Resource Information

Contact Address:

Address Type: mailing address
Address: 22 State House Station
City: Augusta
State or Province: ME
Postal Code: 04333-0022
Country: USA

Contact Voice Telephone: 207 287 2801

Data Set Credit: Credit should always be given to the data source and/or originator when the data is transferred or printed.
Native Data Set Environment:
Maine Office of Information Technology (OIT) Oracle 9i, Maine Office of Geographic Information Systems (MEGIS), Maine GIS SDE, SDEUSER, SDE.DEFAULT, Maine GIS Internet Data Catalog http://megis.maine.gov/catalog/
Cross Reference:

Citation Information:

Originator: Maine Geological Survey (MGS)
Publication Date: 20021115
Title: BEDROCKUNITS
Edition: 2
Geospatial Data Presentation Form: tabular digital data
Series Information:

Series Name: Maine GIS
Issue Identification: SDE server; Internet Data Catalog; Tables

Publication Information:

Publication Place: Augusta ME
Publisher: Maine Office of Geographic Information Systems (MEGIS)

Online Linkage: http://megis.maine.gov/catalog/

Attribute Accuracy:

Attribute Accuracy Report: Attribute accuracy is tested by manual comparison of the source with hard copy printouts and/or symbolized display of digital files. Please report errors to Maine Office of GIS.

Logical Consistency Report: Data set meets "Data Standards for Maine Geographic Information Systems, March 1990". The coverage has been CLEANED and BUILT with polygon topology.
Completeness Report: Data set is complete.
Positional Accuracy:

Horizontal Positional Accuracy:

Horizontal Positional Accuracy Report: Approximate horizontal accuracy is 254 meters, assuming source data meets National Map Accuracy Standards.
Quantitative Horizontal Positional Accuracy Assessment:

Horizontal Positional Accuracy Value: 254
Horizontal Positional Accuracy Explanation: Compilation base data meets National Map Accuracy Standards for 1:500,000 scale. Horizontal positional accuracy for the digital data is tested by visual comparison to the source with hard copy plots.

Vertical Positional Accuracy:

Vertical Positional Accuracy Report: Not applicable

Lineage:

Source Information:

Source Citation:

Citation Information:

Originator: U.S. Geological Survey (USGS)
Publication Date: 19730101
Publication Time: Unknown
Title: (500kbase) USGS 1:500000 State of Maine
Edition: Base
Geospatial Data Presentation Form: map
Series Information:

Series Name: Small Scale Maine and Vicinity Maps
Issue Identification: Maine

Publication Information:

Publication Place: Reston VA
Publisher: U.S. Geological Survey

Other Citation Details: State Map Series
Online Linkage: http://www.state.me.us/doc/nrimc/pubedinf/pubs/pltopo.htm#top

Source Scale Denominator: 500000
Type of Source Media: paper
Source Time Period of Content:

Time Period Information:

Single Date/Time:

Time of Day: Unknown

Source Citation Abbreviation: 500kbase

Source Information:

Source Citation:

Citation Information:

Originator: P.H. Osberg, A.M. Hussey ll, G.M. Boone, ed.
Publication Date: 19851231
Publication Time: Unknown
Title: (OSBHUSSBOONE) Bedrock Geologic Map of Maine
Geospatial Data Presentation Form: atlas
Publication Information:

Publication Place: Augusta ME
Publisher: Maine Geological Survey

Source Scale Denominator: 500000
Type of Source Media: paper
Source Time Period of Content:

Time Period Information:

Single Date/Time:

Calendar Date: 12/31/1985
Time of Day: Unknown

Source Currentness Reference: publication date

Source Citation Abbreviation: osbhussboone

Process Step:

Process Description:
The data for this coverage were scanned off 1:500,000 scale mylars by Maine Geological Survey (MGS) in 1987. The original bedrock unit codes were added by the J.W. Sewall Co. in 1990 for the Maine Low-Level Radioactive Waste Authority. In 1994, staff at MGS identified and added codes for major bedrock faults.
Source Used Citation Abbreviation: 500kbase
Source Used Citation Abbreviation: osbhussboone
Process Date: 19940101
Process Contact:

Contact Information:

Contact Organization Primary:

Contact Organization: US Geological Survey (USGS)

Contact Position: District Chief
Contact Address:

Address Type: mailing and physical address
Address: 26 Ganneston Drive
City: Augusta
State or Province: ME
Postal Code: 04330
Country: USA

Contact Voice Telephone: (207) 622-8201

Process Step:

Process Description:
The Maine Office of GIS completed the conversion of all final data layers from NAD27 to NAD83 in July 1999. All the data layers were converted using the ArcInfo (version 7.2.1) NADCON conversion and the "project" command. All data was copied to double precision, projected to NAD83, and then copied back to single precision. It was decided to keep the NAD27 quad structure instead of generating new quad boundaries from NAD83 coordinates - all indexes (quads) were projected to NAD83 by using the same process previously described. All MEGIS data libraries in ArcInfo Librarian were repopulated using the NAD83 indexes and data.
Process Date: 19990701
Process Contact:

Contact Information:

Contact Organization Primary:

Contact Organization: (MEGIS) Maine Office of Geographic Information Systems

Contact Position: GIS Coordinator
Contact Address:

Address Type: mailing address
Address: State House Station 145
City: Augusta
State or Province: ME
Postal Code: 04333-0145
Country: USA

Contact Voice Telephone: (207) 624-7700
Contact Facsimile Telephone: (207) 287-3842
Hours of Service: Monday through Friday 0800 - 1700 EST

Cloud Cover: 0

Direct Spatial Reference Method: Vector
Point and Vector Object Information:

SDTS Terms Description:

SDTS Point and Vector Object Type: Area chain
Point and Vector Object Count: 2412

Horizontal Coordinate System Definition:

Planar:

Grid Coordinate System:

Grid Coordinate System Name: Universal Transverse Mercator 1983
Universal Transverse Mercator:

UTM Zone Number: 19
Transverse Mercator:

Scale Factor at Central Meridian: 0.9996
Longitude of Central Meridian: -69
Latitude of Projection Origin: 0
False Easting: 500000
False Northing: 0

Planar Coordinate Information:

Planar Coordinate Encoding Method: Coordinate Pair
Coordinate Representation:

Abscissa Resolution: 1
Ordinate Resolution: 1

Planar Distance Units: meters

Geodetic Model:

Horizontal Datum Name: North American Datum of 1983
Ellipsoid Name: Geodetic Reference System 80
Semi-major Axis: 6378137
Denominator of Flattening Ratio: 298.257

Detailed Description:

Entity Type:

Entity Type Label: BEDROCKPoly
Entity Type Definition: polygon feature class
Entity Type Definition Source: Environmental Systems Research Institute, Inc. (ESRI)

Attribute:

Attribute Label: UNIT
Attribute Definition: bedrock unit name as shown on "Bedrock Geologic Map of Maine, Osberg, Hussey, and Boone, 1985"
Attribute Definition Source: a comma delimited text and .dbf format table are available for download at the Maine Office of GIS website on the Data Catalog page located at http://megis.maine.gov/catalog/ .
Attribute Measurement Frequency: Unknown

Detailed Description:

Entity Type:

Entity Type Label: BEDROCKArc
Entity Type Definition: arc feature class
Entity Type Definition Source: Environmental Systems Research Institute, Inc. (ESRI)

Attribute:

Attribute Label: MAJOR1
Attribute Definition: codes for various types of bedrock faults
Attribute Domain Values:

Enumerated Domain:

Enumerated Domain Value: 591
Enumerated Domain Value Definition: geologic unit boundary, coded by USGS
Enumerated Domain Value: 590
Enumerated Domain Value Definition: geologic unit boundary, coded by MGS
Enumerated Domain Value: 0
Enumerated Domain Value Definition: arbitrary seaward boundary
Enumerated Domain Value: -9999
Enumerated Domain Value Definition: state boundary

Attribute:

Attribute Label: MINOR1
Attribute Definition: codes for various types of bedrock faults
Attribute Domain Values:

Enumerated Domain:

Enumerated Domain Value: 46
Enumerated Domain Value Definition: listric fault, downdropped on right side
Enumerated Domain Value Definition Source: when used with MAJOR1 codes 590 and 591
Enumerated Domain Value: 45
Enumerated Domain Value Definition: listric fault, downdropped on left side
Enumerated Domain Value Definition Source: when used with MAJOR1 codes 590 and 591
Enumerated Domain Value: 42
Enumerated Domain Value Definition: thrust fault, upper plate on right
Enumerated Domain Value Definition Source: when used with MAJOR1 codes 590 and 591
Enumerated Domain Value: 41
Enumerated Domain Value Definition: thrust fault, upper plate on left
Enumerated Domain Value Definition Source: when used with MAJOR1 codes 590 and 591
Enumerated Domain Value: 22
Enumerated Domain Value Definition: inferred fault
Enumerated Domain Value Definition Source: when used with MAJOR1 codes 590 and 591
Enumerated Domain Value: 21
Enumerated Domain Value Definition: fault (high-angle, normal or reverse)
Enumerated Domain Value Definition Source: when used with MAJOR1 codes 590 and 591
Enumerated Domain Value: 10
Enumerated Domain Value Definition: stratigraphic contact
Enumerated Domain Value Definition Source: when used with MAJOR1 codes 590 and 591

Overview Description:

Entity and Attribute Overview:
BEDROCK contains statewide bedrock geology map units and major faults. The original bedrock unit codes were added in 1990. In 1994, codes were added for major bedrock faults. Bedrock UNIT codes assigned to this coverage are available in comma delimited text, and .dbf format, on the Maine Office of GIS Data Catalog at http://megis.maine.gov/catalog/ .
Entity and Attribute Detail Citation:
The ArcView shapefile and ArcGIS geodatabase formats, commonly used for Maine GIS data, carry default identifiers and attributes that are software generated and/or important for internal recordkeeping. These are listed here to avoid repetition for every layer, and may not be repeated in the attribute descriptions and definitions of each layer. Common software generated identifiers and attributes in Maine GIS data include: FID (feature identifier), Shape (feature geometry), OBJECTID and SHAPE_lengt. In addition, most GIS formats will carry fields for PERIMETER, AREA and/or LENGTH according to feature geometry. These fields are typically available by default, with the units based on coordinate system or projection units of GIS data. Most GIS software packages also provide a means to calculate these values. It is important to test any columns containing PERIMETER, AREA or LENGTH values before using them for analysis purposes. These important values can be carried from format to format and become out-dated. Verify that the values are correct. Also, in your GIS software, please view the properties of data layers for the map units used to calculate these fields, and for the units set for display purposes.

Distributor:

Contact Information:

Contact Organization Primary:

Contact Organization: (MEGIS) Maine Office of Geographic Information Systems

Contact Position: GIS Coordinator
Contact Address:

Address Type: mailing address
Address: State House Station 145
City: Augusta
State or Province: ME
Postal Code: 04333-0145
Country: USA

Contact Voice Telephone: (207) 624-7700
Contact Facsimile Telephone: (207) 287-3842
Hours of Service: Monday through Friday 0800 - 1700 EST

Distribution Liability:
Users must assume responsibility to determine the usability of this data for their purposes. Although these data have been processed successfully on a computer system at the Maine Office of Geographic Information Systems, no warranty expressed or implied is made by MEGIS regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. Neither the Maine Office of Geographic Information Systems, nor any of its contributors, is liable for misuse of the data, for damage, for transmission of viruses, or for computer contamination through the distribution of these data sets.
Standard Order Process:

Digital Form:

Digital Transfer Information:

Format Name: ESRI Shapefile
Format Version Number: ARC Version 9.x
Format Specification: ArcView Shapefile Format
Format Information Content:
MEGIS has made all vector layers, in the Maine GIS Internet Data Catalog, available in ESRI's ArcView shapefile format. A shapefile is a simple non-topological format that stores the geometry and attribute information for a set of geographic features as a set of vector (point, line, polygon) coordinates. Shapefiles draw quickly and directly in ArcView, ArcGIS, ArcExplorer. Shapefiles are a compatible data type for many other types of GIS software. Three files are fundamental to each shapefile: .shp stores the feature geometry (shape and location information); .shx stores the index of the feature geometry; .dbf a dBASE (TM) file stores the attribute information for the features. Other index files may be created to help speed analysis and query: these file formats are .sbn .sbx .ain .aix .fbn and .fbx. In addition you may find projection .prj, and metadata .xml, files associated with shapefiles.
File Decompression Technique:
Data available from this website is in .zip compressed format. WinZip is a Windows based, PKZip-compatible compression utility. You will need a program like this to extract the data. A link to a trial copy WinZip software is available at http://megis.maine.gov/links/.
Digital Transfer Option:

Online Option:

Computer Contact Information:

Network Address:

Network Resource Name: http://megis.maine.gov/catalog/

Access Instructions:
These data are available to Internet browsers for download from the Maine GIS Internet Data Catalog. Data available from this website is in .zip compressed format. WinZip is a Windows based, PKZip-compatible compression utility. You will need a program like this to extract the data. A link to a trial copy WinZip software is available at http://megis.maine.gov/links/. If you are not already a GIS user, free software for viewing these files is available from Environmental Systems Research Institute, Inc. (ESRI). See http://megis.maine.gov/links/ for a link to ArcExplorer 9.x .
Digital Transfer Option:

Online Option:

Access Instructions: Where file size and Internet access permit, data requests can be made available via File Transfer Protocol (FTP).

Fees: Data may be downloaded from Maine GIS Internet Data Catalog at no charge.
Turnaround: Data is available for immediate download from the Maine GIS Internet Data Catalog.

Standard Order Process:

Available Time Period:

Time Period Information:

Range of Dates/Times:

Beginning Date: 1/1/1995
Beginning Time: Unknown
Ending Date: Present
Ending Time: Unknown

Distributor:

Contact Information:

Contact Organization Primary:

Contact Organization: (MEGIS) Maine Office of Geographic Information Systems

Contact Position: GIS Coordinator
Contact Address:

Address Type: mailing address
Address: State House Station 145
City: Augusta
State or Province: ME
Postal Code: 04333-0145
Country: USA

Contact Voice Telephone: (207) 624-7700
Contact Facsimile Telephone: (207) 287-3842
Hours of Service: Monday through Friday 0800 - 1700 EST

Distribution Liability: Users must assume responsibility to determine the usability of this data for their purposes.
Standard Order Process:

Digital Form:

Digital Transfer Information:

Format Name: ARCSDE
Format Version Number: ArcSDE 9.x
Format Information Content: Oracle 9i

Digital Transfer Option:

Online Option:

Access Instructions: Please contact the Maine Office of GIS (MEGIS) for access instructions.

Fees: Access is available through Maine's wide area network; WAN users may contact the Maine Office of Information Technology, Maine Office of Geographic Information Systems (MEGIS) for a login.

Metadata Date: 7/1/2000
Metadata Review Date: 9/25/2007
Metadata Future Review Date:
Metadata Contact:

Contact Information:

Contact Organization Primary:

Contact Organization: Maine Office of Geographic Information Systems

Contact Position: GIS Coordinator
Contact Address:

Address Type: mailing address
Address: State House Station 145
City: Augusta
State or Province: ME
Postal Code: 04333-0145
Country: USA

Contact Voice Telephone: 207 624-7700
Contact Facsimile Telephone: 207 287-4563
Hours of Service: Monday through Friday 0800 - 1700 EST

Metadata Standard Name:
FGDC Content Standards for Digital Geospatial Metadata Metadata

Metadata Standard Version: FGDC-STD-001-1998