Preliminary geology of the Linnton 7.5' quadrangle, Multnomah and Washington Counties, Oregon

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Oregon Department of Geology and Mineral Industries
Publication_Date: 2008
Publication_Time: Unknown
Title:
Preliminary geology of the Linnton 7.5' quadrangle, Multnomah and Washington Counties, Oregon
Edition: Version 1.0
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Open File Report
Issue_Identification: O-08-06
Publication_Information:
Publication_Place: Portland
Publisher: Oregon Department of Geology and Mineral Industries
Online_Linkage: \\rocks\staff-public\Publications\NEW publications\FINAL COPY\OFR O-08-06 Linnton\for CD\gis\Shp\Linnton_Folds_polyline.shp
Description:
Abstract:
This dataset represents 1:24,000-scale fold axe(s) and descriptive data and shows the location and type of fold in the Linnton 7.5-minute quadrangle, Multnomah and Washington Counties, Oregon. This file is one in a set of four files which are provided to the user in two formats: MapInfo .tab and ESRI .shp format files. The other three files in the set include:  Linnton_Bedrock, Linnton_Faults, and Linnton_Surficial.
Purpose:
Overlay map to go with the bedrock geology map. The purpose of the project is to improve geologic mapping in the Portland urban area in order to better understand earthquake hazards.
Supplemental_Information:
The CD contains digital files with various map coverages created in MapInfo Professional version 9.1 (.tab) and a screen graphic of the map in Adobe PDF format. Digital map coverages are also provided as ArcView version 3.3 Shapefile (.shp) format for ESRI users. Accompanying the screen graphic of the map, is a text file (pdf format) describing the map units along with a discussion of the quadrangle's structural history. This digital data is not field-checked and comes with no guarantees as to its accuracy.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2008
Time of Day: unknown
Currentness_Reference:
Field work conducted in 2006 and 2007, data compilation-2008
Status:
Progress: REQUIRED: The state of the data set.
Maintenance_and_Update_Frequency: REQUIRED: The frequency with which changes and additions are made to the data set after the initial data set is completed.
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -122.861952
East_Bounding_Coordinate: -122.751276
North_Bounding_Coordinate: 45.627078
South_Bounding_Coordinate: 45.531705
Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: Fold
Theme_Keyword: Anticline
Theme_Keyword: Tualatin Mountains Anticline
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: Linnton
Place_Keyword: Tualatin Mountains
Place_Keyword: Oregon
Place_Keyword: Portland
Place_Keyword: Portland Metro Area
Place_Keyword: Linnton 7.5 minute quadrangle
Stratum:
Stratum_Keyword_Thesaurus: none
Temporal:
Temporal_Keyword_Thesaurus: none
Access_Constraints: Restrictions and legal prerequisites for using the data set after use is granted. These include any access constraints applied to assure the protection of privacy or intellectual property, and any special restrictions or limitations on using the data set.
Use_Constraints:
This dataset was tailored fo use at a scale of 1:24,000. Use at larger scale would be inappropriate. There is uncertainty in the position of the fold(s) from the field mapping process, the original map preparation, and the digitizing process.  Therefore, DOGAMI makes no warranty as to the currency, completeness, accuracy or utility of any specific data. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that careful attention be paid to the contents of the metadata file associated with these data.

User should use caution when overlaying other data sets and should not make legally binding decisions from this data. Any person using the information presented here should fully understand the data collection and compilation process before beginning their analysis/use. The burden of determining fitness for use lies with the user. 

To avoid the risk of misinterpretation, invalid results, and erroneous conclusions, the users must consider original map scale, collection methodology, and any other conditions specific to every data element and each dataset as a whole. Potential users are advised to consult with DOGMAI to gain an understanding of the inherent limitations of this data set and its scope of inference. Also, the user must be aware that errors and conditions originating from physical sources involved in developing a dataset may be reflected in the data, and that the digital processing performed during preparation, storage, and transmission of the dataset may have exacerbated such errors and/or introduced additional ones.
Data_Set_Credit:
This research was supported by the U.S. Geological Survey (USGS), Department of the Interior, under USGS award number 03HQAG0013. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government. 

The Oregon Department of Geology and Mineral Industries created and maintains the spatial data sets. Credit should always be given to the data source and/or originator when the data is transferred or printed.
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.2.5.1450
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Accuracy is quite variable for fold axes--on the order of 100-1000 feet on the ground.  Prior to release of map-on-demand files and metadata, the author was given final digital data sets and paper plots for checking against the source map(s) to verify the linework and attributes. Also, the author was asked to check the metadata and accompanying files for completeness and accuracy.
Logical_Consistency_Report:
All lines have one unique label.
Completeness_Report:
Spatial data is presented in the form of lines characterizing folds in the Linnton quadrangle. All fold lines are fully attributed. This feature class must be used in conjunction with the other feature classes in this dataset for a full representation of the Linnton bedrock map (O-08-06map.pdf).
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Appropriate to final map scale of 1:24,000.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
unknown
Lineage:
Process_Step:
Process_Description:
Linework was captured by heads-up digitizing on the computer screen using a bedrock polygons as an overlay on a DRG of the quadrangle. The digital linework was edited and attributed using MapInfo Pro 9.1.
Process_Date: 2008
Cloud_Cover: unknown
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Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 2
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Lambert Conformal Conic
Lambert_Conformal_Conic:
Standard_Parallel: 43.000000
Standard_Parallel: 45.500000
Longitude_of_Central_Meridian: -120.500000
Latitude_of_Projection_Origin: 41.750000
False_Easting: 1312335.958000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000000
Ordinate_Resolution: 0.000000
Planar_Distance_Units: Foot (International)
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic_Reference_System_of_1980
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Linnton_Folds_polyline
Entity_Type_Definition:
Lines (arcs) representing geological fold axis
Entity_Type_Definition_Source:
Oregon Department of Geology and Mineral Industries
Attribute:
Attribute_Label: FID
Attribute_Definition:
Internal feature number.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition:
Feature geometry.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Coordinates defining the features.
Attribute:
Attribute_Label: ID_CODE
Attribute:
Attribute_Label: FOLD_NAME
Attribute_Definition:
Tualatin Mountains Anticline
Attribute_Definition_Source:
Oregon Department of Geology and Mineral Industries
Attribute:
Attribute_Label: FOLD_TYPE
Attribute_Definition:
AC = Anticline
Attribute_Definition_Source:
Oregon Department of Geology and Mineral Industries
Attribute:
Attribute_Label: CERTAINTY
Attribute_Definition:
AP = Approximate
Attribute_Definition_Source:
Oregon Department of Geology and Mineral Industries
Attribute:
Attribute_Label: AZIMUTH
Attribute_Definition:
NW = Northwest
Attribute_Definition_Source:
Oregon Department of Geology and Mineral Industries
Attribute:
Attribute_Label: ATTITUDE
Attribute_Definition:
ND = No data
Attribute_Definition_Source:
Oregon Department of Geology and Mineral Industries
Attribute:
Attribute_Label: FOLD_ID
Overview_Description:
Entity_and_Attribute_Detail_Citation:
For complete decription of attributes, see O-08-06print.pdf
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Nature of the Northwest
Contact_Person: Don Haines
Contact_Position: Manager
Contact_Address:
Address_Type: mailing and physical address
Address:
800 NE Oregon #5
City: Portland
State_or_Province: Oregon
Postal_Code: 97232
Country: USA
Contact_Voice_Telephone: 503-872-2750
Contact_Electronic_Mail_Address: don.haines@state.or.us
Contact Instructions:
Contact Nature of the Northwest Information Center by e-mail, phone, or letter explaining what products are needed. 
 
All DOGAMI publications, both in and out of print, are available for inspection at the Department's offices (most reports "on file" are in the Portland office only) and at many state-document depository libraries in Oregon, including most Oregon college and university libraries. Publications are also available via interlibrary loan from the Oregon State Library, State Library Building, Salem, OR 97310.
Resource_Description: Along with a readme file, the CDROM contains: 1. complete explanatory text in PDF format in two file sizes, one suitable for onscreen viewing and one suitable for high-quality printing ( O-08-06_onscreen.pdf and O-08-06_print.pdf. To view the text: The text file is in Adobe Acrobat portable document format (.pdf). A free Adobe Acrobat Reader can be obtained from Adobe Systems Inc., San Jose, CA. http://www.adobe.com. 2. map_sheets folder containing O-08-06Map.pdf: 36 by 60 inch sheet. 3. metadata folder: Metadata is a documentation of the spatial map (GIS) data and is provided in three file formats: .htm, .txt, and .xml. 4. geochemistry folder: LinntonSampleChem.xls. 5. gis folder: The digital map files are available in two formats: shp - native file format of ESRI ArcGIS software by ESRI, Redlands, California. Free viewer software can be downloaded from http://www.esri.com/software/arcexplorer/index.html and .tab - native file format of MapInfo GIS software by MapInfo Corporation of Troy, New York. You can download the free ProViewer software from http://www.mapinfo.com/software/proviewer/index.html. MapInfo Files Readme: The MapInfo files that were used in the creation of the Preliminary Geologic Map of the Linnton 7.5' Quadrangle, Multnomah and Washington Counties, Oregon: Open-File Report O-08-06 have been included on this CD. All of these MapInfo files are contained within the folder named "tab". ArcGIS Files Readme: An ArcMap file (ERSI) has been included on this CD and contains shapefiles (.shp) of the bedrock and surficial units; contacts (unit boundaries); samples; fold, and faults found on this quadrangle. The shapefiles were created by conversion of the MapInfo files mentioned above. All of these ESRI files are contained within the folder named "shp".
Distribution_Liability:
No warranty, expressed or implied is made regarding the accuracy or utility of the data described and/or contained herein, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. The Oregon Department of Geology and Mineral Industries shall not be held liable for improper or incorrect use of these data. 

This information may be updated without notification.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 0.000
Fees: $15
Ordering_Instructions:
Ordering capability is available through Nature of the Northwest Information Center, 800 NE Oregon Street #5, Portland, Oregon 97232, (503) 872-2750 and a publication list is viewable at: http:/www.naturenw.org
Turnaround: Frist Class Mail
Custom_Order_Process:
Contact The Nature of the Northwest Information Center by e-mail, phone, or letter explaining what products are needed.
Technical_Prerequisites:
Personal computer with Geographic Information System data viewing software.
Available_Time_Period:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2008
Time of Day: unknown
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Metadata_Reference_Information:
Metadata_Date: 20080528
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: REQUIRED: The organization responsible for the metadata information.
Contact_Person: REQUIRED: The person responsible for the metadata information.
Contact_Address:
Address_Type: REQUIRED: The mailing and/or physical address for the organization or individual.
City: REQUIRED: The city of the address.
State_or_Province: REQUIRED: The state or province of the address.
Postal_Code: REQUIRED: The ZIP or other postal code of the address.
Contact_Voice_Telephone: REQUIRED: The telephone number by which individuals can speak to the organization or individual.
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile
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