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 Alaska Geospatial Data Committee
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Polygon Data from "Latest Cretaceous and Cenozoic Magmatic Rocks of Alaska"

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 1997
Publication_Time:
Title:
Polygon Data from "Latest Cretaceous and Cenozoic Magmatic Rocks of Alaska"
Edition:
Geospatial_Data_Presentation_Form: map
Series_Information:
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 1994 map "Latest Cretaceous and Cenozoic magmatic rocks of Alaska" compiled by
E.J. Moll-Stalcup, D.A. Brew, and T.L. Vallier. This map was originally published
(at 1:2,5000,0000) as Plate 5 in Volume G-1, "The Geology of Alaska", edited by G. Plafker and H.C. Berg,
and published by the Geological Society of America (GSA). Volume G-1 (The Geology of Alaska) is one of a
series published by GSA for the Decade of North American Geology (DNAG), and is often referred to as the
DNAG-Alaska volume.
The map (Plate 5) is a statewide summary of magmatic (igneous) rocks grouped into geologic
units that can be portrayed cartographically at 1:2,500,000.
This digital dataset includes all 44 magmatic rock units from the original map, including
dredged and outcrop sampled areas. It includes attributes for rock age (6 groups),
composition (8 groupings), ranges and combinations of age and composition; and the
location of hypabyssal or agglomeratic/tuffaceous units (TYPE = H or T)
This coverage is not intended to be a complete representation of the printed map.
It does NOT include the following features: locations of calderas or volcanoes; inset maps
of magmatic provinces; or explanatory text (introduction and references).

Purpose:
This coverage is intended to provide digital features (polygons) representing generalized magmatic rock units in Alaska for use in small-scale spatial analysis (statewide) with similar coverages such as other geologic 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: Moll-Stalcup, E.J., Brew, D.A., & Vallier, T.L. 1994. Latest Cretaceous and Cenozoic Magmatic Rocks of Alaska, Plate 5 in: Volume G-1, "The Geology of Alaska", Geology of North America series (GNA-G1), Plate 5. 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 (mainly since 1980). 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: 167.0
East_Bounding_Coordinate: -130.0
North_Bounding_Coordinate: 72.0
South_Bounding_Coordinate: 51.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Geology
Theme_Keyword: Igneous
Theme_Keyword: Magmatic
Theme_Keyword: Intrusive
Theme_Keyword: Volcanic
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Alaska
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: calderas, volcanoes, inset maps, introduction, references, and Table 1.

Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:

Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:

Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Moll-Stalcup, E.J., Brew, D.A., & Vallier, T.L. (compilers)
Publication_Date: 1994
Title: Latest Cretaceous and Cenozoic Magmatic Rocks of Alaska
Series_Information:
Series_Name: Decade of North American Geology
Issue_Identification: Volume G-1
Publication_Information:
Publication_Place: Boulder, CO
Publisher: Geological Society of America
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

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Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970613
Process_Time: 1238
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY BUILD CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970613
Process_Time: 1242
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY LABELERRORS CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970613
Process_Time: 1245
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970623
Process_Time: 0953
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970623
Process_Time: 1111
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY BUILD CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970623
Process_Time: 1114
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY LABELERRORS CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970623
Process_Time: 1115
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970623
Process_Time: 1124
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY BUILD CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970623
Process_Time: 1126
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY LABELERRORS CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970623
Process_Time: 1127
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY BUILD CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970623
Process_Time: 1132
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY LABELERRORS CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970623
Process_Time: 1133
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970623
Process_Time: 1134
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY BUILD CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970623
Process_Time: 1136
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY LABELERRORS CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970623
Process_Time: 1136
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY LABELERRORS CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970623
Process_Time: 1136
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970623
Process_Time: 1145
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY BUILD CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970623
Process_Time: 1147
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY LABELERRORS CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970623
Process_Time: 1147
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970623
Process_Time: 1156
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY BUILD CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970623
Process_Time: 1158
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY LABELERRORS CCMRAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19970623
Process_Time: 1158
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY COPY CCMRAT CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970916
Process_Time: 1132
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970916
Process_Time: 1225
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970916
Process_Time: 1440
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970916
Process_Time: 1452
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970916
Process_Time: 1555
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970916
Process_Time: 1615
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970918
Process_Time: 1641
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970922
Process_Time: 1632
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY CLEAN CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970922
Process_Time: 1633
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970922
Process_Time: 1715
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY BUILD CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970922
Process_Time: 1716
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970923
Process_Time: 1224
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970923
Process_Time: 1254
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970923
Process_Time: 1347
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970923
Process_Time: 1426
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY CLEAN CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970923
Process_Time: 1428
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY BUILD CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970923
Process_Time: 1429
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: EXTERNALALL
Source_Used_Citation_Abbreviation: None
Process_Date: 19971105
Process_Time: 1411
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: EXTERNALALL
Source_Used_Citation_Abbreviation: None
Process_Date: 19971105
Process_Time: 1432
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: EXTERNALALL
Source_Used_Citation_Abbreviation: None
Process_Date: 19971105
Process_Time: 1450
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: EXTERNALALL
Source_Used_Citation_Abbreviation: None
Process_Date: 19971105
Process_Time: 1507
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19971208
Process_Time: 1609
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19971208
Process_Time: 1610
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY BUILD CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19971208
Process_Time: 1611
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19971209
Process_Time: 1005
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY BUILD CCMR-RS
Source_Used_Citation_Abbreviation: None
Process_Date: 19971209
Process_Time: 1006
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY COPY CCMR-RS TESTAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19971209
Process_Time: 1109
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/TESTAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19971209
Process_Time: 1618
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/TESTAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19971209
Process_Time: 1630
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/TESTAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19971209
Process_Time: 1641
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/TESTAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19971210
Process_Time: 0952
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/TESTAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19971210
Process_Time: 1009
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/TESTAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19971210
Process_Time: 1036
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/TESTAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19971210
Process_Time: 1054
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/TESTAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19971210
Process_Time: 1106
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/TESTAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19971210
Process_Time: 1120
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/TESTAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19971210
Process_Time: 1123
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/TESTAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19971210
Process_Time: 1126
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/TESTAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19971210
Process_Time: 1135
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/TESTAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19971210
Process_Time: 1153
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/TESTAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19971210
Process_Time: 1201
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/TESTAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19971210
Process_Time: 1205
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/TESTAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19971210
Process_Time: 1209
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY ARCEDIT /BRIAR2/JSCHMIDT/IMRAK/LITHO/TESTAT
Source_Used_Citation_Abbreviation: None
Process_Date: 19971210
Process_Time: 1217
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY RENAME TESTAT MAGMATIC
Source_Used_Citation_Abbreviation: None
Process_Date: 19971215
Process_Time: 1605
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: DPRAY DOCUMENT MAGMATIC CREATE DPRAY
Source_Used_Citation_Abbreviation: None
Process_Date: 19971215
Process_Time: 1617
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: 1285
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 2156
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 1287


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: Unknown
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: MAGMATIC.PAT
Entity_Type_Definition: Attribute table of MAGMATIC.
Entity_Type_Definition_Source: ARC/INFO
Attribute:
Attribute_Label: -
Attribute_Definition: Attribute table of MAGMATIC.
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: MAGMATIC#
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: MAGMATIC-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: A
Attribute_Definition: Location of feldspathoid basalt units
Attribute_Definition_Source: Latest Cretaceous and Cenozoic Magmatic Rocks of Alaska, 1994.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: integer
Enumerated_Domain_Value_Definition: see Entity_and_Attribute_Overview
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: B
Attribute_Definition: Location of basalt units
Attribute_Definition_Source: Latest Cretaceous and Cenozoic Magmatic Rocks of Alaska, 1994.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: integer
Enumerated_Domain_Value_Definition: see Entity_and_Attribute_Overview
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: C
Attribute_Definition: Location of Andesite units
Attribute_Definition_Source: Latest Cretaceous and Cenozoic Magmatic Rocks of Alaska, 1994.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: integer
Enumerated_Domain_Value_Definition: see Entity_and_Attribute_Overview
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: D
Attribute_Definition: Location of Dacite units
Attribute_Definition_Source: Latest Cretaceous and Cenozoic Magmatic Rocks of Alaska, 1994.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: integer
Enumerated_Domain_Value_Definition: see Entity_and_Attribute_Overview
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: E
Attribute_Definition: Location of rhyolite and dacite units
Attribute_Definition_Source: Latest Cretaceous and Cenozoic Magmatic Rocks of Alaska, 1994.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: integer
Enumerated_Domain_Value_Definition: see Entity_and_Attribute_Overview
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: F
Attribute_Definition: Location of granitic (intermediate to felsic) units
Attribute_Definition_Source: Latest Cretaceous and Cenozoic Magmatic Rocks of Alaska, 1994.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: integer
Enumerated_Domain_Value_Definition: see Entity_and_Attribute_Overview
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: G
Attribute_Definition: Location of Granitic (dominantly felsic) units
Attribute_Definition_Source: Latest Cretaceous and Cenozoic Magmatic Rocks of Alaska, 1994.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: integer
Enumerated_Domain_Value_Definition: see Entity_and_Attribute_Overview
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: H
Attribute_Definition: Location of gabbro units
Attribute_Definition_Source: Latest Cretaceous and Cenozoic Magmatic Rocks of Alaska, 1994.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: integer
Enumerated_Domain_Value_Definition: see Entity_and_Attribute_Overview
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: AGE-1
Attribute_Definition: Location of rocks of age: 0-5 Ma
Attribute_Definition_Source: Latest Cretaceous and Cenozoic Magmatic Rocks of Alaska, 1994.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: integer
Enumerated_Domain_Value_Definition: see Entity_and_Attribute_Overview
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: AGE-2
Attribute_Definition: Location of rocks of age: 5-30 Ma
Attribute_Definition_Source: Latest Cretaceous and Cenozoic Magmatic Rocks of Alaska, 1994.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: integer
Enumerated_Domain_Value_Definition: see Entity_and_Attribute_Overview
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: AGE-3
Attribute_Definition: Location of rocks of age: 30-45 Ma
Attribute_Definition_Source: Latest Cretaceous and Cenozoic Magmatic Rocks of Alaska, 1994.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: integer
Enumerated_Domain_Value_Definition: see Entity_and_Attribute_Overview
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: AGE-4
Attribute_Definition: Location of rocks of age: 45-55 Ma
Attribute_Definition_Source: Latest Cretaceous and Cenozoic Magmatic Rocks of Alaska, 1994.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: integer
Enumerated_Domain_Value_Definition: see Entity_and_Attribute_Overview
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: AGE-5
Attribute_Definition: Locations of rocks of age: 55-65 Ma
Attribute_Definition_Source: Latest Cretaceous and Cenozoic Magmatic Rocks of Alaska, 1994.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: integer
Enumerated_Domain_Value_Definition: see Entity_and_Attribute_Overview
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: AGE-6
Attribute_Definition: Location of rocks of age: 65-76 Ma
Attribute_Definition_Source: Latest Cretaceous and Cenozoic Magmatic Rocks of Alaska, 1994.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: integer
Enumerated_Domain_Value_Definition: see Entity_and_Attribute_Overview
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: TYPE
Attribute_Definition:
Location of rocks of hypabyssal or agglomeratic/tuffaceous character.
Attribute_Definition_Source: Latest Cretaceous and Cenozoic Magmatic Rocks of Alaska, 1994.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Character
Enumerated_Domain_Value_Definition:
"H" = hypabyssal rocks; "T" = area of chiefly tuff, breccia, and agglomerate
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: FEATURE_NAME
Attribute_Definition:
Name of geologic feature (e.g. Mt. Susitna Pluton), where applicable.
Attribute_Definition_Source: Latest Cretaceous and Cenozoic Magmatic Rocks of Alaska, 1994.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:
Enumerated_Domain_Value_Definition:
Enumerated_Domain_Value_Definition_Source:
Overview_Description:
Entity_and_Attribute_Overview:

MAGMATIC.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 MAGMATIC# 4 5 B - - 13 MAGMATIC-ID 4 5 B - - 17 A 2 2 B - FELDSPATHOID-BAS - 19 B 2 2 B - BASALT - 21 C 2 2 B - ANDESITE - 23 D 2 2 B - DACITE - 25 E 2 2 B - RHYOLITE-DACITE - 27 F 2 2 B - GRANITIC(INT-FEL - 29 G 2 2 B - GRANITIC(DOM-FEL - 31 H 2 2 B - GABBRO - 33 AGE-1 2 2 B - 0-5(MA) - 35 AGE-2 2 2 I - 5-30(MA) - 37 AGE-3 2 2 I - 30-45(MA) - 39 AGE-4 2 2 I - 45-55(MA) - 41 AGE-5 2 2 I - 55-65(MA) - 43 AGE-6 2 2 I - 65-76(MA) - 45 TYPE 2 2 C - - 47 FEATURE_NAME 44 44 C - -

In MAGMATIC.PAT, items A through H and AGE-1 through AGE-6, contain values of either "0" or "1". A value of "1" indicates that the polygon satisfies the criteria defined in the alternate names or in the Attribute_Definitions listed above. (For example; a value of"1" in the column named "D" indicates the presence of rocks of dacite composition; and a value "1" in the column labeled AGE-3 indicates the presence of rocks of 30-45 Ma age). A value of "0" means that the polygon does not satisfy the defined criteria. The item TYPE may contain the character "H" (indicating hypabyssal rocks) or the character "T" (indicating an area of chiefly tuff, breccia, and agglomerate).

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: MAGMATIC

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/magmatic.tar.gz>

Fees: None.
Available_Time_Period:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 199712

Metadata_Reference_Information:
Metadata_Date: 19971216
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

Generated by mp on Tue Jan 27 14:08:48 1998


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