Metadata: Identification_Information: Citation: Citation_Information: Originator: Labay, K.A., and Haeussler, P.J. Publication_Date: 2001 Title: GIS Coverages of the Castle Mountain Fault, South Central Alaska Edition: Version 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: USGS OFR 01-504 Online_Linkage: Description: Abstract: This data set represents GIS coverages of the Castle Mountain Fault captured from three maps representing portions of the fault in south central Alaska. Purpose: Provide land managers with an authoritative source for the location of the fault in the Talkeetna Mountains and Susitna Lowland. Digital maps may be displayed at any scale or projection, however the geologic data in this coverage is not intended for use at a scale larger than 1:63,360. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2001 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -150.75 East_Bounding_Coordinate: -147.75 North_Bounding_Coordinate: 62.00 South_Bounding_Coordinate: 61.25 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: fault Place: Place_Keyword_Thesaurus: None Place_Keyword: Alaska Place_Keyword: south central Place_Keyword: Castle Mountain Place_Keyword: Matanuska Valley Place_Keyword: Talkeetna Mountains Place_Keyword: Susitna lowland Access_Constraints: None Use_Constraints: Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from this data. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Peter J. Haeussler Contact_Position: Geologist 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: 907-786-7447 Contact_Electronic_Mail_Address: pheuslr@usgs.gov Data_Set_Credit: GIS support by Keith A. Labay Raytheon ITSS contractor. Native_Data_Set_Environment: Data set was created using ESRI ARC/Info version 7.2.1 on a Unix platform. Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Data attribute accuracy is tested by manual comparison of the source with hard copy plots and/or symbolized display of the map data on an interactive computer graphic system. Selected attributes that cannot be visually verified on plots or on screen are interactively queried and verified on screen. Logical_Consistency_Report: This data set contains line coverages with arcs that represent faults, linements, or anticlines. Each arc has been assigned a code that indicates what type of feature it represents. This data set also contains point coverages that represent high and low elevations along the fault. Completeness_Report: This data set is comprised of only the faults or elevation points from each source. Other information about the geology such as contacts between units or points without elevation values was not included. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The data from the Detterman and others (1974) map should be considered less accurate than the data from the other maps. Users of this digital geologic map should respect the intentions of the original mappers and the limitations of the map. This geologic map compilation is intended to be used at a scale of 1:63,000; it is not intended to be used at a more detailed scale. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Detterman, R.L. Originator: Plafker, G. Originator: Hudson, T. Originator: Tysdal, R.G. Originator: Pavoni, N. Publication_Date: 1974 Title: Surface geology and Holocene breaks along the Susitna segment of the Castle Mountain fault Alaska Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map Issue_Identification: MF-618 Other_Citation_Details: Detterman, R. L., Plafker, G., Hudson, T., Tysdal, R. G., and Pavoni, N., 1974, Surface geology and Holocene breaks along the Susitna segment of the Castle Mountain fault, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-618, 1 sheet. Source_Scale_Denominator: 24000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1974 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Detterman and others, 1974 Source_Contribution: Western portion of the line work and all points are based on Detterman and others, 1974 Source_Information: Source_Citation: Citation_Information: Originator: Detterman, R.L. Originator: Plafker, G. Originator: Russell, G.T. Originator: Hudson, T. Publication_Date: 1976 Title: Features along part of the Talkeetna segment of the Castle Mountain-Caribou fault system, Alaska Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map Issue_Identification: MF-738 Other_Citation_Details: Detterman, R. L., Plafker, G., Russell, G.T., and Hudson, T., 1974, Features along part of the Talkeetna segment of the Castle Mountain-Caribou fault system, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-738, 1 sheet. Source_Scale_Denominator: 63360 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1976 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Detterman and others, 1976 Source_Contribution: Eastern portion of the line work is based on Detterman and others, 1976. Geologic line work on this map other than faults was not captured. Source_Information: Source_Citation: Citation_Information: Originator: Haeussler, P.J. Publication_Date: 1998 Title: Surficial geologic map along the Castle Mountain fault between Houston and Hatcher Pass Road, Alaska Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Open File Report Issue_Identification: OFR 98-480 Other_Citation_Details: Haeussler, P.J., 1998, Surficial geologic map along the Castle Mountain fault between Houston and Hatcher Pass Road, Alaska: U.S. Geological Survey Open-File Report OFR 98-480 Source_Scale_Denominator: 63360 Type_of_Source_Media: ARC/INFO vector coverage Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1998 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Haeussler, 1998 Source_Contribution: The central portion of the line work is based on Haeussler, 1998. Source_Information: Source_Citation: Citation_Information: Originator: Saltus, R.W. Originator: Haeussler, P.J. Originator: Bracken, R.E. Originator: Doucette, J.P. Originator: Jachens, R.c. Publication_Date: 2001 Title: Anchorage Urban Region Aeromagnetics (AURA) project - preliminary geopysical results Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Open File Report Issue_Identification: OFR 01-0085 Other_Citation_Details: Saltus, R.W., Haeussler, P.J., Bracken, R.E., Doucette, J.P., and Jachens, R.C., 2001, Anchorage Urban Region Aeromagnetics (AURA) project - preliminary geophysical results: U.S. Geological Survey Open-File Report 01-0085, 23 p. Source_Scale_Denominator: 63360 Type_of_Source_Media: ARC/INFO vector coverage Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2001 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Saltus et al., 2001 Source_Contribution: Two anticlines are based on Saltus et al., 2001. Process_Step: Process_Description: The Haeussler (1998) map was the easiest to include in this compilation since it was already available digitally. Because of this the attributes from the Haeussler (1998) map were used as the basis for assigning attributes to the arcs from the other coverages. The data from the other two sources was captured by hand digitizing from folded paper maps on a GTCO digizizer into ARC/INFO coverages. The Detterman and others (1974) map was comprised of three unregistered aerial photographs with the fault and point locations drawn over them. In order to georeference the data it was digitized in straight table coordinates, and then registration points were established between the photographs and georeferenced images of USGS topographic maps. Due to the lack of prominent features on the photographs the registration points could not be located with as much precision as desired. To compensate for this the faults and points were rubber sheeted to the images of the topographic maps after registration. However, the locations of these faults should still be considered less accurate then those from the other sources. The Detterman and others (1976) map drawn over a topographic base, so it could be registered without accuracy problems. All faults on the map were digitized. Where there was overlap in between the three sources the Haeussler (1998) map had priority. In two cases fault positions were adjusted to connect with faults from the Haeussler (1998) map. Two anticlines were included from the Saltus et al. (2001) map. Together the modified fault coverages and the data from Saltus et al. (2001) comprise the coverage cmfault. The unmodified versions of Haeussler (1998), Detterman and others (1974), and Detterman and others (1976) can be found in cmfault_c, cmfault_w, and cmfault_e respectively. The data from Saltus et al. (2001) was not modified, so it does not appear in a seperate coverage. The arcs and points were then attributed in ARC/INFO. For the purpose of distribution, the coverages have been converted to an interchange format file using the ARC/INFO export command. Process_Date: 2001 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Keith A. Labay 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: 907-786-7410 Contact_Electronic_Mail_Address: klabay@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector 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 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 6.35 Ordinate_Resolution: 6.35 Planar_Distance_Units: meters Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: arcs Entity_Type_Definition: Characteristics of the arc features in this data set are coded in the .aat, the arc attribute table. The .aat consists of the following items: CODE, CODE-PARA, and SOURCE. Entity_Type_Definition_Source: this data set Attribute: Attribute_Label: code Attribute_Definition: Code is a positive integer value (3 3 I) item in the arc attribute table. Values range from 1 to 8. Code describes the fault types. Attribute_Definition_Source: this data set Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1 Enumerated_Domain_Value_Definition: Fault; certain location Enumerated_Domain: Enumerated_Domain_Value: 2 Enumerated_Domain_Value_Definition: Fault; possible location Enumerated_Domain: Enumerated_Domain_Value: 3 Enumerated_Domain_Value_Definition: Fault; approximate location Enumerated_Domain: Enumerated_Domain_Value: 4 Enumerated_Domain_Value_Definition: Fault; concealed Enumerated_Domain: Enumerated_Domain_Value: 5 Enumerated_Domain_Value_Definition: Fault; probable location Enumerated_Domain: Enumerated_Domain_Value: 7 Enumerated_Domain_Value_Definition: Lineation Enumerated_Domain: Enumerated_Domain_Value: 8 Enumerated_Domain_Value_Definition: Anticline Attribute: Attribute_Label: code-para Attribute_Definition: Code-para is a positive integer value (3 3 I) item in the arc attribute table. Values range from 0 to 2. Code-para distinguishes fault types that were described with different levels of uncertainty on the Detterman and others (1974) and (1976) maps, but given the same code so they would conform to the coding scheme used on the previously published Haeussler (1998) map. A value of 0 indicates that fault types were not grouped. Attribute_Definition_Source: this data set Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 2 Attribute: Attribute_Label: code-para2 Attribute_Definition: Code-para2 is a positive integer value (3 3 I) item in the arc attribute table. Values range from 0 to 1. Code-para2 distinguishes faults that show visible evidence of movement on the Detterman and others (1974) and Haeussler (1998) maps by giving them a value of 1. Faults with no visible evidence of movement on the Detterman and others (1974), Detterman and others (1976), and Haeussler (1998) maps have been given a value of 0. Attribute_Definition_Source: this data set Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 1 Attribute: Attribute_Label: source Attribute_Definition: Source is a character field (6 8 C) item in the arc attribute table. Source indicates which map the data originated from. Attribute_Definition_Source: this data set Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: CM001 Enumerated_Domain_Value_Definition: Haeussler, 1998 Enumerated_Domain: Enumerated_Domain_Value: CM002 Enumerated_Domain_Value_Definition: Detterman and others, 1974 Enumerated_Domain: Enumerated_Domain_Value: CM003 Enumerated_Domain_Value_Definition: Detterman and others, 1976 Enumerated_Domain: Enumerated_Domain_Value: CM004 Enumerated_Domain_Value_Definition: Saltus et al., 2001 Detailed_Description: Entity_Type: Entity_Type_Label: points Entity_Type_Definition: Characteristics of the point features in this data set are coded in the .pat, the point attribute table. The .pat includes the following items: LOWELEVATION, HIGHELEVATION and SOURCE. Entity_Type_Definition_Source: this data set Attribute: Attribute_Label: lowelevation Attribute_Definition: Lowelevation is a positive numeric value (3 3 N) item in the point attribute table. It contains the low elevation values given on the Detterman and others (1974) map in meters. Attribute_Definition_Source: this data set Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0 Range_Domain_Maximum: 7.6 Attribute: Attribute_Label: highelevation Attribute_Definition: Highelevation is a positive numeric value (3 3 N) item in the point attribute table. It contains the high elevation values given on the Detterman and others (1974) map in meters. Attribute_Definition_Source: this data set Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.3 Range_Domain_Maximum: 9.1 Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS Information Services Contact_Address: Address_Type: mailing address Address: Box 25286 Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: 303-202-4200 or 1-888-ASK-USGS Resource_Description: USGS OFR 01-504 Distribution_Liability: Although this data has been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data, software, or related materials. Metadata_Reference_Information: Metadata_Date: 20020103 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Keith A. Labay 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: 907-786-7410 Contact_Electronic_Mail_Address: klabay@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998