surf

Identification Information

Citation Information

Originator	Maine Geological Survey (MGS)
Publication Date	19910101
Title	surf
Geospatial Data Presentation Form	vector digital data
Series Name	Maine GIS
Issue Identification	SDE server; Internet Data Catalog
Publication Place	Augusta ME
Publisher	Maine Office of Geographic Information Systems (MEGIS)
Other Citation Details	1:250000
Online Linkage	http://megis.maine.gov/catalog/

Abstract

SURF contains statewide surficial geology map units for Maine at 1:250,000 scale. The Maine Geological Survey (MGS) developed the dataset which maps surficial geology map units from their Regional Surficial Geology maps published in 1987. The data for this coverage were digitized and coded from 1:250,000 scale mylars by the J.W. Sewall Co., in 1990, for the Maine Low-Level Radioactive Waste Authority. Some coding and edgematching errors exist. For a detailed description of the surficial unit types see "Surficial Geologic Map of Maine, 1985" available at MGS. The data were updated in 2006 to fix some coastal errors.

Purpose

This dataset was developed for use by MGS in cooperation with other entities. Its primary purpose is to provide a digital base map of surficial geologic units for Maine. Detailed design decisions and confirmation for the characterization of features will require additional field work.

Time Period of Content

Calendar Date	1987
Time of Day	Unknown
Currentness Reference	source date

Status

Progress	Complete
Maintenance and Update Frequency	None planned

Bounding Coordinates

West Bounding Coordinate	-71.166947
East Bounding Coordinate	-66.850055
North Bounding Coordinate	47.460103
South Bounding Coordinate	43.057685

Keywords

Theme	dunes, sand and gravel, surficial deposits, alluvial, beach, bog, eolian, lacustrine, glaciomarine, glacial outwash, glacial fluvial, moraine, till, drift (Maine GIS Thesaurus-Theme)
Theme	imageryBaseMapsEarthCover, geoscientificInformation (ISO Keyword Thesaurus)
Place	Maine, United States (Maine GIS Thesaurus-Place)
Stratum	land surface (GCMD Parameter Keyword)

Access Constraints

none

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. 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

Contact Organization

(MEDOCMGS) Maine Department of Conservation, Maine Geological Survey

Contact Person

Director, Earth Resource Information

Address Type

mailing address

Address

22 State House Station

City

Augusta

State or Province

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

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722

Attribute Accuracy Report

Some coding errors exist.

Logical Consistency Report

Some edgematching errors and tile boundary remnants exist. The 250,000 scale coverage is distributed by 100K tiles.

Completeness Report

The dataset is complete.

Horizontal Positional Accuracy Report

Approximate horizontal accuracy is 127 meters, assuming source data meets National Map Accuracy Standards.

Horizontal Positional Accuracy Value

127

Horizontal Positional Accuracy Explanation

Horizontal positional accuracy for this digital data is tested by visual comparison to the source with hard copy plots.

Citation Information

Originator	Maine Geological Survey (MGS)
Publication Date	1987
Title	(RGNLSURF) Regional Surficial Geology Maps
Geospatial Data Presentation Form	atlas
Publication Place	Augusta ME
Publisher	Maine Geological Survey

Source Scale Denominator

999999

Type of Source Media

paper

Calendar Date

1987

Time of Day

Unknown

Source Currentness Reference

publication date

Source Citation Abbreviation

rgnlsurf

Citation Information

Originator	Maine Geological Survey (MGS)
Publication Date	1985
Title	(SURF) Surficial Geologic Map of Maine
Geospatial Data Presentation Form	atlas
Publication Place	Augusta ME
Publisher	Maine Geological Survey
Other Citation Details	For a detailed description of the surficial unit types see this "Surficial Geologic Map of Maine, 1985" a hardcopy map available through Maine Geological Survey.

Source Scale Denominator

250000

Type of Source Media

paper

Calendar Date

1985

Time of Day

Unknown

Source Currentness Reference

publication date

Source Citation Abbreviation

surf

Process Description

The Maine Geological Survey developed this dataset of surficial geology map units from their Regional Surficial Geology maps published in 1987. The data for this coverage were digitized and coded from 1:250,000 scale mylars by the J.W. Sewall Co., in 1990 for the Maine Low-Level Radioactive Waste Authority. Some coding and edgematching errors exist. For a detailed description of the surficial unit types see "Surficial Geologic Map of Maine, 1985" available at MGS.

Source Used Citation Abbreviation

rgnlsurf

Source Used Citation Abbreviation

surf

Process Date

1990

Contact Organization

James W. Sewall Company

Address Type

mailing and physical address

Address

147 Center Street

City

Old Town

State or Province

Postal Code

04468

Country

USA

Contact Voice Telephone

(207) 827-4456

Contact Facsimile Telephone

(207) 827-3641

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

Contact Organization

(MEGIS) Maine Office of Geographic Information Systems

Contact Person

GIS Coordinator

Contact Position

GIS Coordinator

Address Type

mailing address

Address

State House Station 174

City

Augusta

State or Province

Postal Code

04333-0174

Country

USA

Contact Voice Telephone

207 624-7700

Contact Facsimile Telephone

207 287-3842

Hours of Service

Monday through Friday 0800 - 1700 EST

Process Description

UNIT, MATERIALS, TOPOGRAPHY, and ORIGIN fields were added by typing in the map legend descriptions in an Access database and joining it to the SURF layer.

Process Date

Oct 2006

Process Description

Metadata imported.

Source Used Citation Abbreviation

U:\projects\metadata\up_to_date\datasets\surf.xml

Process Date

20110525

Process Time

13004000

Cloud Cover

Indirect Spatial Reference

sample 1:100000 scale tile Lewiston

Direct Spatial Reference Method

Vector

SDTS Point and Vector Object Type

G-polygon

Point and Vector Object Count

8178

Grid Coordinate System Name

UTM Zone Number

Scale Factor at Central Meridian

0.9996

Longitude of Central Meridian

-69

Latitude of Projection Origin

False Easting

500000

False Northing

Planar Coordinate Encoding Method

Abscissa Resolution

Ordinate Resolution

Planar Distance Units

Horizontal Datum Name

North American Datum of 1983

Ellipsoid Name

Geodetic Reference System 80

Semi-major Axis

6378137

Denominator of Flattening Ratio

298.257

Altitude Resolution

1.000000

Altitude Encoding Method

Explicit elevation coordinate included with horizontal coordinates

Entity Type Label

Surf

Entity Type Definition

polygon feature class

Entity Type Definition Source

Environmental Systems Research Institute, Inc. (ESRI)

Attribute Label

CODE

Beginning Date of Attribute Values

Attribute Label

Code

Attribute Definition

The unit code on the map

Attribute Definition Source

MGS

Beginning Date of Attribute Values

Attribute Label

DESCRIPTION

Beginning Date of Attribute Values

Attribute Label

Description

Attribute Definition

Brief description of the unit

Attribute Definition Source

MGS

Beginning Date of Attribute Values

Attribute Label

MATERIALS

Beginning Date of Attribute Values

Attribute Label

MATERIALS2

Beginning Date of Attribute Values

Attribute Label

Materials

Attribute Definition

Materials description of the unit from the map

Attribute Definition Source

MGS

Beginning Date of Attribute Values

Attribute Label

Materials2

Attribute Definition

Overflow for the MATERIALS field (if > 255 characters)

Attribute Definition Source

MGS

Beginning Date of Attribute Values

Attribute Label

OBJECTID

Attribute Definition

Internal feature number.

Attribute Definition Source

ESRI

Unrepresentable Domain

Sequential unique whole numbers that are automatically generated.

Beginning Date of Attribute Values

Attribute Label

ORIGIN

Beginning Date of Attribute Values

Attribute Label

ORIGIN2

Beginning Date of Attribute Values

Attribute Label

Origin

Attribute Definition

Origin description of the unit from the map

Attribute Definition Source

MGS

Beginning Date of Attribute Values

Attribute Label

Origin2

Attribute Definition

Overflow for the ORIGIN field (when > 255 characters)

Attribute Definition Source

MGS

Beginning Date of Attribute Values

Attribute Label

SHAPE

Attribute Definition

Feature geometry.

Attribute Definition Source

ESRI

Unrepresentable Domain

Coordinates defining the features.

Beginning Date of Attribute Values

Attribute Label

SHAPE.AREA

Beginning Date of Attribute Values

Attribute Label

SHAPE.LEN

Beginning Date of Attribute Values

Attribute Label

Shape

Attribute Definition

Feature geometry.

Attribute Definition Source

ESRI

Unrepresentable Domain

Coordinates defining the features.

Beginning Date of Attribute Values

Attribute Label

TOPOGRAPHY

Beginning Date of Attribute Values

Attribute Label

Topography

Attribute Definition

Topography description of the unit from the map

Attribute Definition Source

MGS

Beginning Date of Attribute Values

Attribute Label

UNIT

Beginning Date of Attribute Values

Attribute Label

Unit

Attribute Definition

Geologic Unit description from the map

Attribute Definition Source

MGS

Beginning Date of Attribute Values

Entity and Attribute Overview

SURF contains surficial geology map units characterized by specific type in the item MINOR 1. Attribution also indicates whether features represent a significant source of sand or gravel, or potential water supply aquifer, although this dataset does not represent the most complete or up-to-date information these resources in Maine.

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.

Entity and Attribute Overview

Entity and Attribute Detail Citation

Contact Organization

(MEGIS) Maine Office of Geographic Information Systems

Contact Person

GIS Coordinator

Contact Position

GIS Coordinator

Address Type

mailing address

Address

State House Station 174

City

Augusta

State or Province

Postal Code

04333-0174

Country

USA

Contact Voice Telephone

207 624-7700

Contact Facsimile Telephone

207 287-3842

Hours of Service

Monday through Friday 0800 - 1700 EST

Resource Description

Downloadable Data

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.

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/.

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These data are available to Internet browsers for download from the Maine GIS Internet Data Catalog - http://megis.maine.gov/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) - www.esri.comSee http://megis.maine.gov/links/ for a link to ArcExplorer 9.x .

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.

Contact Organization

Maine Office of Geographic Information Systems

Contact Position

GIS Coordinator

Address Type

mailing address

Address

State House Station 174

City

Augusta

State or Province

Postal Code

04333-0174

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.

Format Name

ARCSDE

Format Version Number

ArcSDE 9.x

Format Information Content

Oracle 9i

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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 Reference Information

Metadata Date

20061026

Metadata Review Date

20100120

Metadata Future Review Date

Metadata Contact

Contact Organization	(MEGIS) Maine Office of Geographic Information Systems
Contact Person	GIS Coordinator
Contact Position	GIS Coordinator
Address Type	mailing address
Address	State House Station 174
City	Augusta
State or Province	ME
Postal Code	04333-0174
Country	USA
Contact Voice Telephone	207 624-7700
Contact Facsimile Telephone	207 287-3842
Hours of Service	Monday through Friday 0800 - 1700 EST

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

Online Linkage

http://www.esri.com/metadata/esriprof80.html

Profile Name

ESRI Metadata Profile

Online Linkage

http://www.esri.com/metadata/esriprof80.html

Profile Name

ESRI Metadata Profile