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Alaska Radiometric Ages

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: U.S. Geological Survey

Publication_Date: 1999

Title: Alaska Radiometric Ages

Geospatial_Data_Presentation_Form: tabular digital data

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1999

Currentness_Reference:

Date on which data provided online was extracted from the database

Description:

Abstract:

The Alaska Radiometric Age file is a database of radiometric ages of rocks or minerals sampled from Alaska. The data was collected from professional publications and/or received from researchers and used by permission.

Purpose:

Database of radiometric ages is designed to aid in the research of geochronologic information of Alaska rocks and minerals. Users should always review the cited publications for more complete descriptions of the samples, analyses, and geologic interpretation.

Supplemental_Information:

The radiometric dates in this data set were collected from published sources through 1990(approximately). The dates were compiled over many years and published as a map in the series Decade of North American Geology, by the Geological Society of America.

Status:

Progress: In work

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: 172.0

East_Bounding_Coordinate: -130.0

North_Bounding_Coordinate: 72.0

South_Bounding_Coordinate: 54.0

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: geochronology

Theme_Keyword: radiometric age

Theme_Keyword: radiometric date

Theme_Keyword: geologic time

Theme_Keyword: potassium-argon

Theme_Keyword: uranium-lead

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Alaska

Access_Constraints: None

Use_Constraints:

The U.S. Geological Survey makes no warranties related to the accuracy of the data and users are required to determine the usability for any particular purpose.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Person: Nora Shew

Contact_Address:

Address_Type: mailing and physical

Address: 4200 University Drive

City: Anchorage

State_or_Province: AK

Postal_Code: 99508-4667

Country: U.S.A.

Contact_Voice_Telephone: 907-561-1181

Contact_Electronic_Mail_Address: nshew@usgs.gov

Data_Set_Credit:

The radiometric age data base has been maintained since the mid-1970's. Compilers include: F.H. Wilson, Nora Shew, G.D. DuBois, and Shawn Dadisman.

Data_Quality_Information:

Logical_Consistency_Report:

Generally, the radiometric ages in the database are as published. Some potassium-argon ages have been recalculated using the decay constants recommended by the IUGS Subcommission on Geochronology in 1976. Dates that have been recalculated are noted in the 'Comments' field.

Completeness_Report:

The radiometric age database does not include the analytical information which is often found in the published sources. Also, the database records do not contain the geologic interpretation of the analysis. Users of this database should always /refer to the publications listed in the 'Reference' field for detailed information about each analysis.

Lineage:

Process_Step:

Process_Description:

The Alaska radiometric age file is a compilation of published and other released radiometric dates on rocks and minerals of Alaska. The precision of the analyses and the locations of the samples vary widely from the various sources. This compilation has not attempted to interpret the data. Users of this data should always refer to the published sources of the information.

This database contains for each record: location, dating method, rock type, mineral/phase dated, age (in millions of years), comments, and references. The data was imported into Microsoft Access, brought into ArcView3.1 as an event theme, and then converted into a shape file.

Process_Date: 1999

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Person: Nora Shew

Contact_Address:

Address_Type: mailing and physical

Address: 4200 University Drive

City: Anchorage

State_or_Province: AK

Postal_Code: 99508-4667

Country: USA

Contact_Voice_Telephone: 907-561-1181

Contact_Electronic_Mail_Address: nshew@usgs.gov

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Point

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.002

Longitude_Resolution: 0.002

Geographic_Coordinate_Units: Decimal degrees

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: points

Entity_Type_Definition: Characteristics of points in shape table.

Attribute:

Attribute_Label: Quad

Attribute_Definition: Name of 1:250,000 scale quadrangle

Attribute_Definition_Source: USGS Geographic Names Information System

Attribute_Domain_Values:

Unrepresentable_Domain: Name of 1:250,000 scale quadrangle.

Attribute:

Attribute_Label: Latdeg

Attribute_Definition: Degree of latitude

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 50

Range_Domain_Maximum: 70

Attribute_Units_of_Measure: degrees

Attribute_Measurement_Resolution: 1.

Attribute:

Attribute_Label: Latmin

Attribute_Definition: Minute of latitude

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.0

Range_Domain_Maximum: 59.9

Attribute_Units_of_Measure: minutes

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Latdir

Attribute_Definition: Direction of latitude

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: N

Enumerated_Domain_Value_Definition: North

Attribute:

Attribute_Label: Londeg

Attribute_Definition: Degree of longitude

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 126

Range_Domain_Maximum: 179

Attribute_Units_of_Measure: degrees

Attribute_Measurement_Resolution: 1.

Attribute:

Attribute_Label: Lonmin

Attribute_Definition: Minute of longitude

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.0

Range_Domain_Maximum: 59.9

Attribute_Units_of_Measure: minutes

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: londir

Attribute_Definition: Direction of longitude

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: E

Enumerated_Domain_Value_Definition: East

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: W

Enumerated_Domain_Value_Definition: West

Attribute:

Attribute_Label: Sample

Attribute_Definition:

Sample ID from published source. If none was given in the cited source, then a sample id was created for this database.

Attribute_Domain_Values:

Unrepresentable_Domain: free text

Attribute:

Attribute_Label: Rock

Attribute_Definition: Rock name or type

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: ADAM

Enumerated_Domain_Value_Definition: adamellite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AGNS

Enumerated_Domain_Value_Definition: augen gneiss

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: ALSK

Enumerated_Domain_Value_Definition: alaskite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: ALT

Enumerated_Domain_Value_Definition: altered

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AMPH

Enumerated_Domain_Value_Definition: amphibolite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AND

Enumerated_Domain_Value_Definition: andesite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: APL

Enumerated_Domain_Value_Definition: aplite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: ASH

Enumerated_Domain_Value_Definition: ash

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: BAS

Enumerated_Domain_Value_Definition: basalt

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: BIOT

Enumerated_Domain_Value_Definition: biotitite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: BENT

Enumerated_Domain_Value_Definition: bentonite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: BSCH

Enumerated_Domain_Value_Definition: blueschist

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: BREC

Enumerated_Domain_Value_Definition: breccia

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: CG

Enumerated_Domain_Value_Definition: conglomerate

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: DAC

Enumerated_Domain_Value_Definition: dacite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: DI

Enumerated_Domain_Value_Definition: diorite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: DIA

Enumerated_Domain_Value_Definition: diabase

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: ECLG

Enumerated_Domain_Value_Definition: eclogite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: FELS

Enumerated_Domain_Value_Definition: felsite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: GAB

Enumerated_Domain_Value_Definition: gabbro

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: GDI

Enumerated_Domain_Value_Definition: granodiorite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: GLASS

Enumerated_Domain_Value_Definition: glass

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: GNLT

Enumerated_Domain_Value_Definition: granulite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: GNS

Enumerated_Domain_Value_Definition: gneiss

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: GNST

Enumerated_Domain_Value_Definition: greenstone

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: GR

Enumerated_Domain_Value_Definition: granite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: GRTD

Enumerated_Domain_Value_Definition: granitoid

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: GSCH

Enumerated_Domain_Value_Definition: greenschist

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: HBDT

Enumerated_Domain_Value_Definition: hornblendite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: HFLS

Enumerated_Domain_Value_Definition: hornfels

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: INTR

Enumerated_Domain_Value_Definition: intrusive

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: LAMP

Enumerated_Domain_Value_Definition: lamprophyre

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: LAT

Enumerated_Domain_Value_Definition: latite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: LBAS

Enumerated_Domain_Value_Definition: leucobasalt

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: LGAB

Enumerated_Domain_Value_Definition: leucogabbro

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: MAF

Enumerated_Domain_Value_Definition: mafic

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: MAR

Enumerated_Domain_Value_Definition: marble

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: META

Enumerated_Domain_Value_Definition: metamorphic

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: METB

Enumerated_Domain_Value_Definition: metabasite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: METP

Enumerated_Domain_Value_Definition: metapelite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: METV

Enumerated_Domain_Value_Definition: metavolcanic

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: METW

Enumerated_Domain_Value_Definition: metawacke

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: MIG

Enumerated_Domain_Value_Definition: migmatite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: MON

Enumerated_Domain_Value_Definition: monzonite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: MONDI

Enumerated_Domain_Value_Definition: monzodiorite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: MYLT

Enumerated_Domain_Value_Definition: mylonite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: OTHER

Enumerated_Domain_Value_Definition: other (rock identified in comments field)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: PEG

Enumerated_Domain_Value_Definition: pegmatite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: PHYL

Enumerated_Domain_Value_Definition: phyllite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: PORPH

Enumerated_Domain_Value_Definition: porphyry

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: PYRX

Enumerated_Domain_Value_Definition: pyroxenite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Q DI

Enumerated_Domain_Value_Definition: quartz diorite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: QMD

Enumerated_Domain_Value_Definition: quartz monzodiorite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: QMON

Enumerated_Domain_Value_Definition: quartz monzonite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: QS

Enumerated_Domain_Value_Definition: quartz sericite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: QTZT

Enumerated_Domain_Value_Definition: quartzite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: RHY

Enumerated_Domain_Value_Definition: rhyolite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: SBREC

Enumerated_Domain_Value_Definition: sedimentary breccia

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: SCH

Enumerated_Domain_Value_Definition: schist

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: SERP

Enumerated_Domain_Value_Definition: serpentinite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: SKARN

Enumerated_Domain_Value_Definition: skarn

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: SS

Enumerated_Domain_Value_Definition: sandstone

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: SY

Enumerated_Domain_Value_Definition: syenite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: TON

Enumerated_Domain_Value_Definition: tonalite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: TRCH

Enumerated_Domain_Value_Definition: trachyte

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: TROND

Enumerated_Domain_Value_Definition: trondjemite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: TUFF

Enumerated_Domain_Value_Definition: tuff

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: UMAF

Enumerated_Domain_Value_Definition: ultramafic

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: VOL

Enumerated_Domain_Value_Definition: volcanic

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: UNID

Enumerated_Domain_Value_Definition: unidentified

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: XENO

Enumerated_Domain_Value_Definition: xenolith

Attribute:

Attribute_Label: Method

Attribute_Definition: Isotopic dating method

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: A

Enumerated_Domain_Value_Definition: Pb-alpha

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: F

Enumerated_Domain_Value_Definition: Fission track

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: K

Enumerated_Domain_Value_Definition: K-Ar

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: P

Enumerated_Domain_Value_Definition: Pb methods

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: R

Enumerated_Domain_Value_Definition: Rb-Sr

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: S

Enumerated_Domain_Value_Definition: Sm-Nd

Attribute:

Attribute_Label: Mineral

Attribute_Definition:

Mineral or phase dated from sample; or denotes that date is calculated from an isochron.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AC

Enumerated_Domain_Value_Definition: actinolite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AM

Enumerated_Domain_Value_Definition: amphibole

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AP

Enumerated_Domain_Value_Definition: apatite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AW

Enumerated_Domain_Value_Definition: anorthoclase

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: BI

Enumerated_Domain_Value_Definition: biotite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: CH

Enumerated_Domain_Value_Definition: chlorite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: FD

Enumerated_Domain_Value_Definition: feldspar

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: GL

Enumerated_Domain_Value_Definition: glass

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: GP

Enumerated_Domain_Value_Definition: glaucophane

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: HO

Enumerated_Domain_Value_Definition: hornblende

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: IC

Enumerated_Domain_Value_Definition: isochron

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: KF

Enumerated_Domain_Value_Definition: K-feldspar

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: MI

Enumerated_Domain_Value_Definition: mica

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: MU

Enumerated_Domain_Value_Definition: muscovite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: OT

Enumerated_Domain_Value_Definition: other (mineral identified in comments field)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: PA

Enumerated_Domain_Value_Definition: paragonite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: PH

Enumerated_Domain_Value_Definition: phengnite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: PL

Enumerated_Domain_Value_Definition: plagioclase

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: PP

Enumerated_Domain_Value_Definition: phologopite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: PY

Enumerated_Domain_Value_Definition: pyroxene

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: RI

Enumerated_Domain_Value_Definition: riebeckite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: SA

Enumerated_Domain_Value_Definition: sanidine

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: SE

Enumerated_Domain_Value_Definition: sericite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: SP

Enumerated_Domain_Value_Definition: sphene

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: TR

Enumerated_Domain_Value_Definition: tremolite

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: UN

Enumerated_Domain_Value_Definition: unknown

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: WR

Enumerated_Domain_Value_Definition: whole rock

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: ZI

Enumerated_Domain_Value_Definition: zircon

Attribute:

Attribute_Label: Age m.y.

Attribute_Definition: Age of sample in millions of years

Attribute_Domain_Values:

Unrepresentable_Domain: positive number

Attribute:

Attribute_Label: Comment

Attribute_Definition: Field for free text.

Attribute_Domain_Values:

Unrepresentable_Domain: free text

Attribute:

Attribute_Label: Ref

Attribute_Definition: Reference of data sample.

Attribute_Domain_Values:

Unrepresentable_Domain: free text

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Person: Tom Kress

Contact_Address:

Address_Type: mailing address

Address: 12201 Sunrise Valley Drive MS954

City: Reston

State_or_Province: VA

Postal_Code: 20192

Country: USA

Contact_Voice_Telephone: 703-648-6328

Contact_Electronic_Mail_Address: thkress@usgs.gov

Resource_Description: akages.shp

Distribution_Liability:

The U.S. Geological Survey (USGS) provides this point data "as is." The USGS make no guarantee or warranty concerning the accuracy of information contained in the dataset. Further, the USGS makes no warranties, either expressed or implied, as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although this data has bee processed successfully on computers at the USGS, no warranty, express or implied, is made by the USGS regarding the use of this data on any other system, nor does the fact of distribution constitute or imply any such warranty.

Metadata_Reference_Information:

Metadata_Date: 20030408

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Person: Nora Shew

Contact_Address:

Address_Type: mailing and physical address

Address: 4200 University Drive

City: Anchorage

State_or_Province: AK

Postal_Code: 99508-4667

Country: USA

Contact_Voice_Telephone: 907-561-1181

Contact_Electronic_Mail_Address: nshew@usgs.gov

Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998