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 Alaska Geospatial Data Committee
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Polygon Data from 1994 "Map Showing Sedimentary Basins in Alaska"

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 1997
Publication_Time:
Title:
Polygon Data from 1994 "Map Showing Sedimentary Basins in Alaska"
Edition:
Geospatial_Data_Presentation_Form:
Series_Name Issue_Identification
Publication_Information:
Publication_Place: Anchorage, AK
Publisher: U.S. Geological Survey
Other_Citation_Details:
Online_Linkage: <URL:https://agdc.usgs.gov/data/usgs/geology/index.html>

Description:
Abstract:
This dataset consists of a polygon coverage and associated attribute data derived
from the onshore and offshore portions of the 1994 "Map showing Sedimentary Basins
in Alaska" by C.E. Kirschner. This map is Plate 7 in Volume G-1: "The Geology of Alaska",
published by the Geological Society of America, as part of their Decade of North
American Geology (DNAG) series of publications.
The published map indicates the locations of Cenozoic basins, their age and thickness
of sedimentary fill; the locations of Mesozoic flysch basins, Cenozoic
volcanic rocks, and some metasedimentary rocks, generalized to be shown cartographically
at 1:2,500,000 scale.
This digital dataset includes the 6 map units indicated on the original map
(Cenozoic basin, 3 types of flysch belt, volcanic rocks or fold belt). Data
available in the attribute table include the age of the basin fill or rock (4 categories
of Eon; 3 categories of Age/Period); and the thickness of basin fill (in kilometers,
derived from isopachs and Bouger gravity data).
This coverage is not intended to be a complete representation of the printed map.
It does NOT include the following features: Faults, folds; bathymetric contours;
cities; geographic or map feature names; volcanic centers; wells; oil and gas fields;
glaciers; Bouger gravity data, except where indicative of basin fill thickness;
stratigraphic charts and inset maps of Cook Inlet and the North Slope; the correlation
chart; explanation; or principal sources of data list.

Purpose:
This coverage is intended to provide digital features (polygons) representing generalized sedimentary rock units and sedimentary basin thicknesses in Alaska. It is intended for use in small-scale spatial analysis (statewide) with similar coverages such as other geologic or lithologic units, vegetation types, soils, etc.

Supplemental_Information:

Procedures_Used: The linework was digitized in 1997 from a paper copy of the 1994 map at the U.S. Geological Survey's Alaska Section (Geologic Division) facilities in Anchorage, AK. The original Transverse Mercator projection of the map (Central Meridian: 100*W; Scale factor: 0.926; Reference ellipsoid: (6371204m, 63712004m)) was converted to an Albers equal-area coverage in ARC/INFO (version 7.1.2). The resulting coverage did not align exactly with an Albers equal-area coverage of the Alaskan coastline, so a rubber-sheeting operation was performed using points along the coastline and major rivers to match an Albers equal area projection. Map unit (polygon) locations and attributes were checked by the person responsible for the digitizing, and spot-checked by one reviewer, by comparing a printed copy of the coverage to the published map. Metadata were collected using document.aml v. 7.1.1, distributed by ESRI, Inc.

Revisions: None completed or planned.

Reviews_Applied_to_Data: See Procedures_Used.

Related_Spatial_and_Tabular_Data_Sets:

Other_References_Cited: Kirschner, C.E. 1994. Map Showing Sedimentary Basins in Alaska. Plate 7 in: Volume G-1, "The Geology of Alaska", Geology of North America series (GNA-G1). Geological Society of America, Inc., Boulder, CO. Scale 1:2,500,000.

Notes: The completeness and quality of the geologic data in the digital coverage is that of the published 1994 map, which summarized data collected prior to that date. No recent data have been added. The geographic accuracy of the published map has been slightly degraded by the rubber-sheet operation.

Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1997
Currentness_Reference: Publication date = 1994

Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: 175.0
East_Bounding_Coordinate: -130.0
North_Bounding_Coordinate: 75.0
South_Bounding_Coordinate: 51.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Geology
Theme_Keyword: Sedimentary
Theme_Keyword: Basins
Theme_Keyword:

Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Alaska
Place_Keyword: Offshore

Stratum:
Stratum_Keyword_Thesaurus: None
Stratum_Keyword: None
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: None
Access_Constraints: N/A

Use_Constraints:
This coverage should not be copied or distributed without its associated metadata file. Intended use is at small scales (e.g. statewide, 1:2,500,000 etc.) only; enlargements of this data to scales greater than that at which they were originally compiled can lead to misinterpretation of data. The U.S. Geological Survey (Dept. of Interior) should be acknowledged as the data source in products derived from these data. Use of these data is not restricted; however, organizations, agencies, units of government or other users are responsible for its appropriate application.

Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey Alaska Section, Mineral Resource Surveys Program, Geologic Division
Contact_Position: GIS Support Staff
Contact_Address:
Address_Type: mailing and physical address
Address: 4200 University Dr.
City: Anchorage
State_or_Province: AK
Postal_Code: 99508-4667
Contact_Voice_Telephone: (907)-786-7495

Data_Set_Credit: D. C. Pray, J. M. Schmidt

Security_Information:
Security_Classification_System: None
Security_Classification: Unclassified
Security_Handling_Description: None
Native_Data_Set_Environment: SunOS, 5.5.1, sun4u UNIX, ARC/INFO version 7.1.2


Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: See Entity_Attribute_Information
Quantitative_Attribute_Accuracy_Assessment:
Attribute_Accuracy_Value: See Explanation
Attribute_Accuracy_Explanation:
Attribute accuracy is described, where present, with each attribute defined in the Entity and Attribute Section.
Logical_Consistency_Report: Polygon topology present.
Completeness_Report:
The following map features are not included in the digital representation: Faults, folds; bathymetric contours; cities; geographic or map feature names; volcanic centers; wells; oil and gas fields; glaciers; Bouger gravity data, except where indicative of basin fill thickness; stratigraphic charts and inset maps of Cook Inlet and the North Slope; the correlation chart; explanation; or principal sources of data list.

Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:

Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:

Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Kirschner, C.E.
Publication_Date: 1994
Title: Map Showing Sedimentary Basins in Alaska
Series_Information:
Series_Name: Issue_Identification Volume G-1
Publication_Information:
Publication_Place: Boulder, CO
Publisher: Geological Society of America, Inc.
Source_Scale_Denominator: 2,500,000
Type_of_Source_Media: Paper map
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1994
Source_Currentness_Reference:
Source_Citation_Abbreviation:
Source_Contribution: Direct copy

Process_Step:
Process_Description: DPRAY ELIMINATE SEDBASAT SED-ELIMINATE
Source_Used_Citation_Abbreviation: None
Process_Date: 19970909
Process_Time: 1527
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY RENAME SED-ELIMINATE SED-ELIM
Source_Used_Citation_Abbreviation: None
Process_Date: 19970909
Process_Time: 1527
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY COPY SED-ELIM SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970909
Process_Time: 1540
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY BUILD SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970909
Process_Time: 1603
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970909
Process_Time: 1645
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970909
Process_Time: 1702
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970909
Process_Time: 1708
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY BUILD SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970909
Process_Time: 1709
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY LABELERRORS SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970909
Process_Time: 1710
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY LABELERRORS SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970909
Process_Time: 1710
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY LABELERRORS SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970909
Process_Time: 1712
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970909
Process_Time: 1727
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY BUILD SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970909
Process_Time: 1728
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY LABELERRORS SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970909
Process_Time: 1728
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970909
Process_Time: 1731
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY BUILD SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970909
Process_Time: 1731
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY LABELERRORS SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970909
Process_Time: 1732
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970910
Process_Time: 1056
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970910
Process_Time: 1116
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970910
Process_Time: 1128
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970910
Process_Time: 1140
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970910
Process_Time: 1158
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970910
Process_Time: 1204
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY BUILD SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970910
Process_Time: 1205
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970910
Process_Time: 1314
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970910
Process_Time: 1339
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970910
Process_Time: 1415
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY BUILD SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970910
Process_Time: 1416
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY LABELERRORS SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970910
Process_Time: 1416
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970910
Process_Time: 1502
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970910
Process_Time: 1541
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970910
Process_Time: 1548
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SEDBASAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970910
Process_Time: 1705
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY COPY SEDBASAT SED-BASINS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970910
Process_Time: 1707
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SED-BASINS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970911
Process_Time: 1202
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY COPY SED-BASINS SED-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970915
Process_Time: 1232
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SED-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970915
Process_Time: 1305
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY COPY SED-RS SED-RS2
Source_Used_Citation_Abbreviation: None
Process_Date: 19970915
Process_Time: 1306
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY COPY SED-RS2 SED-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970915
Process_Time: 1346
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SED-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970915
Process_Time: 1512
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY BUILD SED-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970915
Process_Time: 1514
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY COPY SED-RS SED-RS2
Source_Used_Citation_Abbreviation: None
Process_Date: 19970917
Process_Time: 1036
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SED-RS2
Source_Used_Citation_Abbreviation: None
Process_Date: 19970917
Process_Time: 1457
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO_3/SED-RS2
Source_Used_Citation_Abbreviation: None
Process_Date: 19970917
Process_Time: 1532
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY CLEAN SED-RS2
Source_Used_Citation_Abbreviation: None
Process_Date: 19970918
Process_Time: 0919
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY RENAME SED-RS2 SEDBAS_RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970918
Process_Time: 1442
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY RENAME SEDBAS_RS SEDBAS_RS06
Source_Used_Citation_Abbreviation: None
Process_Date: 19971229
Process_Time: 1609
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY COPY SEDBAS_RS06 SED_BASINS
Source_Used_Citation_Abbreviation: None
Process_Date: 19971229
Process_Time: 1610
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY DOCUMENT SED_BASINS CREATE DPRAY
Source_Used_Citation_Abbreviation: None
Process_Date: 19971230
Process_Time: 1144
Source_Produced_Citation_Abbreviation: None


Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 730
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 1757
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 733


Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
Standard_Parallel: 55
Standard_Parallel: 65
Longitude_of_Central_Meridian: -154
Latitude_of_Projection_Origin: 50
False_Easting: 0.00000
False_Northing: 0.00000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 1.0
Ordinate_Resolution: 1.0
Planar_Distance_Units: METERS
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378206.4
Denominator_of_Flattening_Ratio: 294.98


Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: SED_BASINS.PAT
Entity_Type_Definition: Attribute table of SED_BASINS.
Entity_Type_Definition_Source: ARC/INFO
Attribute:
Attribute_Label: -
Attribute_Definition: Attribute table of SED_BASINS.
Attribute_Definition_Source: ARC/INFO
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -
Enumerated_Domain_Value_Definition:
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: AREA
Attribute_Definition: Area of poly/region in square coverage units (square meters)
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Positive real numbers
Enumerated_Domain_Value_Definition:
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: PERIMETER
Attribute_Definition: Perimeter of poly/region in coverage units (meters)
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Positive real numbers
Enumerated_Domain_Value_Definition:
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: SED_BASINS#
Attribute_Definition: Internal feature number
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sequential unique positive integer
Enumerated_Domain_Value_Definition:
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: SED_BASINS-ID
Attribute_Definition: User-assigned feature number
Attribute_Definition_Source: User-defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Integer
Enumerated_Domain_Value_Definition:
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: MAP_UNIT
Attribute_Definition: Description of map unit.
Attribute_Definition_Source: Map Showing Sedimentary Basins in Alaska, 1994.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:
Enumerated_Domain_Value_Definition: see Entity_and_Attribute_Overview
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: EON
Attribute_Definition: Age of basin or map unit, in eons (Cenozoic, Mesozoic, etc.)
Attribute_Definition_Source: Map Showing Sedimentary Basins in Alaska, 1994.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:
Enumerated_Domain_Value_Definition: see Entity_and_Attribute_Overview
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: AGE/PERIOD
Attribute_Definition: Age of basin or map unit, in period (Tertiary, Jurassic, etc.)
Attribute_Definition_Source: Map Showing Sedimentary Basins in Alaska, 1994.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:
Enumerated_Domain_Value_Definition: see Entity_and_Attribute_Overview
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: THICKNESS(KM)
Attribute_Definition:
Contains values for thickness of Cenozoic/Tertiary basins, in kilometers.
Attribute_Definition_Source: Map Showing Sedimentary Basins in Alaska, 1994.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:
Enumerated_Domain_Value_Definition: see Entity_and_Attribute_Overview
Enumerated_Domain_Value_Definition_Source:
Overview_Description:
Entity_and_Attribute_Overview:

SED_BASINS.PAT COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME INDEXED? 1 AREA 4 12 F 3 - 5 PERIMETER 4 12 F 3 - 9 SED_BASINS# 4 5 B - - 13 SED_BASINS-ID 4 5 B - - 17 MAP_UNIT 30 30 C - - 47 EON 6 6 C - - 53 AGE/PERIOD 30 30 C - - 83 THICKNESS(KM) 4 4 N 1 -

The item 'MAP_UNIT' can have the following 6 possible descriptive values: sedimentary basin; older sedimentary basin; flysch basin, fold belt; flysch basin, deformed; flysch basin, metamorphosed; or volcanic rocks. Areas of Alaska without polygons are those areas underlain by older, basement, granitic, metamorphic or volcanic rocks unrelated to sedimentary basins.

The item 'EON' can have the following 4 possible values: Cz (Cenozoic); Mz (Mesozoic); Mz-Cz (Mesozoic to Cenozoic); or Pz-Cz (Paleozoic to Cenozoic).

The item 'AGE/PERIOD' can have the following 3 possible values: Late Tertiary and Quaternary; Lower Tertiary; Jurassic to Cretaceous; or no value (no period specified).

The item 'THICKNESS(KM)' can have the following 8 possible values: 0.1, 1.1, 3.1, 5.1, 7.1, 9.1, 11.1, or 13.1. These values are derived from isopachs of basin fill and/or the thicknesses interpreted from Bouger gravity lows, within given map units. Since a given map unit or basin contains varying thicknesses of fill, the user must query appropriately to find the range of interest. For example, to find areas with a fill thickness between 3 and 5 kilometers, select "thickness(km) > 3 and thickness(km) < 5".

Entity_and_Attribute_Detail_Citation: Not Available


Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: webmaster - Alaska Geospatial Data Clearinghouse
Contact_Address:
Address_Type: mailing and physical address
Address: 4230 University Drive
City: Anchorage
State_or_Province: AK
Postal_Code: 99508-4667
Contact_Voice_Telephone: Please use electronic mail.
Contact_Electronic_Mail_Address: webmaster@www-eros-afo.wr.usgs.gov
Contact_Instructions: Please use electronic mail.

Resource_Description: MATURITY

Distribution_Liability:
Although these data have been processed successfully on a computer system at the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the Geological Survey regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. The U.S. Dept. of Interior, nor any of its agencies are liable for misuse of the data, nor for any damage, transmission of viruses or computer contamination caused through transmission of these data sets.

Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name:
ARCE Files are compressed with the GNU-zip public-domain file compression utility.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <URL:https://agdcftp1.wr.usgs.gov/pub/usgs/geology/sed_basins.tar.gz>
Fees: None.
Available_Time_Period:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 199712

Metadata_Reference_Information:
Metadata_Date: 19971202
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: David Pray
Contact_Position: GIS Support Staff
Contact_Address:
Address_Type: mailing and physical address
Address: 4200 University Drive
City: Anchorage
State_or_Province: AK
Postal_Code: 99508-4667
Contact_Voice_Telephone: (907)-786-7495

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: 19940608
Metadata_Time_Convention: Local Time
Metadata_Security_Information:
Metadata_Security_Classification_System: None
Metadata_Security_Classification: Unclassified
Metadata_Security_Handling_Description: None


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Page Last Modified: Wednesday, 07-Dec-2016 12:30:26 AKST