Identification_Information: Citation: Citation_Information: Originator: Ray Wells (geologic mapping) Originator: M. Sawlan (digital compilation) Publication_Date: 20140716 Title: EWH_fault_slickensides Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Open-File Report Issue_Identification: OFR 2014-1063 Publication_Information: Publication_Place: Menlo Park, CA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2014/1063 Online_Linkage: http://dx.doi.gov/ofr20141063 Larger_Work_Citation: Citation_Information: Originator: Ray E. Wells (geologic map) Originator: M. Sawlan (digital database) Publication_Date: 20140716 Title: Preliminary Geologic Map of the Eastern Willapa Hills, Cowlitz, Lewis, and Wahkiakum Counties, Washington Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: Open-File Report Issue_Identification: OFR 2014–1063 Publication_Information: Publication_Place: Menlo Park, CA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2014/1063 Online_Linkage: http://dx.doi.gov/10.3133/ofr20141063 Description: Abstract: This dataset defines the locations and orientations of slickenside lineations measured on fault slip surfaces in the Eastern Willapa Hills in southwestern Washington. These data are part of the geologic map referenced as: Wells, Ray E., 1981, Geologic Map of the Eastern Willapa Hills - Cowlitz, Lewis, and Wahkiakum Counties, Washington, U.S. Geological Survey Open File Report 81-674. All records derive from the author during field work 1978-1980. Slickensides records have three user-defined fields: PTYPE, AZIMUTH and PLUNGE. The field PTYPE contains a text string that characterizes general classes of slickenside orientations (horizontal, inclined) in combination with fault orientation (vertical, inclined). For inclined orientations, a direction of plunge (East or West) is also indicated. This field is used to symbolize the slickenside lineation data. The easterly or westerly plunge suffix for inclined lineations is used to orient symbols in an upright position relative to fault lines. Ptype text entries consist of three comma-delineated parts: (1) "slickensides"; (2) orientation as "horizontal" or "inclined"; and, (3) fault surface orientation as "on vertical fault" or "on horizontal fault". Ptype entries for inclined slickensides on vertical faults are further appended with "_E" or "_W" to control symbolization. The field AZIMUTH contains slickenside azimuths as integers in units of degrees. Azimuth values were determined by reference to fault lines and slickenside symbols as shown on the georeferenced digital copy of the 1981 compilation map. For slickensides on vertical fault surfaces, azimuth was determined by iteratively estimating fault azimuth at the point where slickenside symbols are shown on the 1981 analog map until the symbolized slickenside azimuth lay parallel to the fault trace. For horizontal slickensides, azimuth corresponds to a trend (i.e. azimuths of 140 and 320 degrees are equivalent), and azimuth values were arbitrarily chosen from the two choices to minimize overlap with other symbols in map layout. For inclined slickensides on inclined fault surfaces, the azimuth of slickenside lineation plunge was determined by iteratively estimating the orientation of the arrow symbol representing plunge direction as shown on the 1981 analog map. Note that these azimuth values are not the recorded numeric values as but rather are values determined from symbols plotted on the analog map using a protractor. The field PLUNGE contains integer values of the inclination (the angle downward from horizontal). Plunge values for inclined slickensides were transcribed from hand-written numbers on the 1981 analog map. Horizontal slickensides, by definition, were assigned a plunge of zero. Values of plunge greater than zero are displayed on the map via the annotation layer "EWH_fault_slickensides_Anno". Purpose: These data document the locations and orientation of slickenside lineations indicating the trend of slip along a fault surface. They provide constraints on fault kinematics. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2014 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -123.458815 East_Bounding_Coordinate: -123.018250 North_Bounding_Coordinate: 46.504257 South_Bounding_Coordinate: 46.182387 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: slickensides Theme_Keyword: slip lineations Theme_Keyword: fault kinematics Place: Place_Keyword: Eastern Willapa Hills Place_Keyword: Southwestern Washington Place_Keyword: Lower Columbia River Place_Keyword: Cowlitz County, WA Place_Keyword: Lewis County, WA Place_Keyword: Wahkiakum County Place_Keyword: Adna Place_Keyword: Blaney Creek Place_Keyword: Boistfort Peak Place_Keyword: Boistfort Place_Keyword: Cathlamet Place_Keyword: Coal Creek Place_Keyword: Curtis Place_Keyword: Dean Creek Place_Keyword: Doty Place_Keyword: Elochman Pass Place_Keyword: Elochoman Lake Place_Keyword: Nassa Point Place_Keyword: Oak Point Place_Keyword: Pe Ell Place_Keyword: Pluvius Place_Keyword: Rainbow Falls Place_Keyword: Skamokawa Pass Place_Keyword: Skamokawa Place_Keyword: Wildwood Stratum: Stratum_Keyword: Alluvial deposits Stratum_Keyword: Alluvium Stratum_Keyword: Landslide Stratum_Keyword: Logan Hill Formation Stratum_Keyword: Columbia River Basalt Stratum_Keyword: CRB Stratum_Keyword: Saddle Mountains Basalt Stratum_Keyword: Pomona Stratum_Keyword: Wanapum Basalt Stratum_Keyword: Frenchman Springs Stratum_Keyword: Grande Ronde Basalt Stratum_Keyword: Astoria Formation Stratum_Keyword: Basalt intrusive rocks Stratum_Keyword: Basalt breccia and flows Stratum_Keyword: Lincoln Creek Formation Stratum_Keyword: Siltstone of Skamokawa Creek Stratum_Keyword: Quartz monzonite Stratum_Keyword: Grays River Volcanics Stratum_Keyword: Cowlitz Formation Stratum_Keyword: McIntosh Formation Stratum_Keyword: Crescent Formation Stratum_Keyword: Crescent Basalt Temporal: Temporal_Keyword: Tertiary Temporal_Keyword: Quaternary Temporal_Keyword: Eocene Temporal_Keyword: Oligocene Temporal_Keyword: Miocene Temporal_Keyword: Pleistocene Temporal_Keyword: Holocene Access_Constraints: None Use_Constraints: Users of this geospatial database and geologic information derived from it should acknowledge the U.S. Geological Survey as the source of the data. Uses of this digital geologic map should not violate the spatial resolution of the data. Although the digital form of the data removes the constraint imposed by the scale of a paper map, the detail and accuracy inherent in map scale are also present in the digital data. The fact that this database was edited for a scale of 1:24,000 means that higher resolution information is not present in the dataset. Plotting at scales larger than 1:24,000 will not yield greater real detail, although it may reveal fine-scale irregularities below the intended resolution of the database. Similarly, where this database is used in combination with other data of higher resolution, the resolution of the combined output will be limited by the lower resolution of these data. Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.2.0.1324 Data_Quality_Information: Lineage: Source_Information: Source_Scale_Denominator: 62500 Type_of_Source_Media: stable-base material - frosted mylar Source_Citation_Abbreviation: Wells, 1981, USGS Open File Report 81-674 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Entity point Point_and_Vector_Object_Count: 23 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 10 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -123.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000064 Ordinate_Resolution: 0.000064 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.400000 Denominator_of_Flattening_Ratio: 294.978698 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Resolution: 0.000003 Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: EWH_fault_slickensides Entity_Type_Definition: slickenside lineations on fault slip surfaces Entity_Type_Definition_Source: author Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: OBJECTID 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: PTYPE Attribute_Definition: category of slickensides as horizontal or inclined, with a direction (E or W) specified for inclined slickensides (see Abstract above for more definitions) Attribute_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: slickensides, horizontal, on vertical fault Enumerated_Domain_Value_Definition: a point location on a vertical fault to show horizontal slickenside orientation Enumerated_Domain: Enumerated_Domain_Value: slickensides, inclined, on inclined fault Enumerated_Domain_Value_Definition: Enumerated_Domain: Enumerated_Domain_Value: slickensides, inclined, on vertical fault_E Enumerated_Domain_Value_Definition: a point location on a vertical fault to show inclined slickenside orientation inclined E Enumerated_Domain: Enumerated_Domain_Value: slickensides, inclined, on vertical fault_W Enumerated_Domain_Value_Definition: a point location on a vertical fault to show inclined slickenside orientation inclined W Attribute: Attribute_Label: AZIMUTH Attribute_Definition: azimuth of slickenside lineations, in degrees Attribute_Definition_Source: author Attribute: Attribute_Label: PLUNGE Attribute_Definition: angle of lineation inclination measured downward from horizontal, in degrees Attribute_Definition_Source: author Detailed_Description: Entity_Type: Entity_Type_Label: Anno_59_79 Entity_Type_Definition: link between DIP values and annotation layer Entity_Type_Definition_Source: author Overview_Description: Entity_and_Attribute_Overview: Analog symbols plotted on the 1981 mylar compilation map were used to determine numerical values of slickenside trend contained in the azimuth field. To obtain numerical values for azimuth for an observation, estimated values were entered in the azimuth field of the record, and the digitally symbolized orientation (using ESRI ArcMap) was compared with the orientation of the symbol shown on a georeferenced digital copy of the 1981 mylar compilation map. This process was repeated iteratively until the digital symbol aligned with that shown on the original compilation map. For inclined slickensides, azimuth direction is defined to be in the direction of plunge. For horizontal slickensides, azimuth is a bidirectional trend (i.e. azimuths of 140 and 320 degrees are equivalent), and azimuthal values were arbitrarily chosen from the two choices to minimize graphic overlap with other map symbols. Although azimuths for inclined slickenside lineations are by convention defined in the direction of plunge, these linear orientations also correspond to a trend, not a specific direction indicating relative motion along the fault surface. Plunge values were transcribed from the 1981 mylar compilation map. Non-zero values for plunge are displayed on the map via the feature-linked annotation layer named "EWH_fault_slickensides_Anno". Plunge values for horizontal slickensides are not displayed in the annotation layer given that horizontal slickenside lineations are uniquely symbolized. 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 Contact_Voice_Telephone: 1-888-ASK-USGS Contact_Facsimile_Telephone: (303) 202-4695 Contact_Electronic_Mail_Address: infoservices@usgs.gov Resource_Description: Downloadable Data USGS Open File Report 2014-1063 Distribution_Liability: Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this publication has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use. Standard_Order_Process: Digital_Form: Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2014/1063 Fees: free Metadata_Reference_Information: Metadata_Date: 20140507 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Ray Wells Contact_Organization: U.S. Geological Survey Contact_Position: Geologist / Project Chief, Pacific Northwest Geologic Mapping Contact_Address: Address_Type: mailing address Address: U.S. Geological Survey Address: 345 Middlefield Rd MS-973 City: Menlo Park State_or_Province: CA Postal_Code: 94025 Contact_Voice_Telephone: 650-329-4933 Contact_Electronic_Mail_Address: rwells@usgs.gov Contact_Instructions: Additional contact: Karen Wheeler, PNW Project Data Manager, 650-329-4935, kwheeler@usgs.gov 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