Metadata: Identification_Information: Citation: Citation_Information: Originator: Plouff, Donald Title: Geophysical studies of the Crump Geyser known geothermal resource area, Oregon, in 1975 Publication_Date: 2006 Series_Information: Series_Name: Open-File Report Issue_Identification: 2006-1110 Publication_Information: Publication_Place: Menlo Park, California Publisher: Geological Survey (U.S.) Online_Linkage: http://pubs.usgs.gov/of/2006/1110/ Description: Abstract: Gravity map and data used to infer details of the geologic structure of the area. Surveys were conducted during or prior to 1975. Purpose: Geophysical information republished in improved formats because the information was otherwise difficult to obtain. Original study was conducted in support of the resource appraisal of the Crump Geyser Known Geothermal Resource Area (KGRA). This area was designated as a KGRA by the USGS, and this designation became effective on December 24, 1970 (Godwin, and others, 1971). The land classification standards for a KGRA were established by the Geothermal Steam Act of 1970 (Public Law 91-581). Federal lands so classified required competitive leasing for the development of geothermal resources. Time_Period_of_Content: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: 1975 Single_Date/Time: Calendar_Date: 2006 Currentness_Reference: Original report of 1975 republished in 2006 Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -120.081333 East_Bounding_Coordinate: -119.708333 North_Bounding_Coordinate: 42.445667 South_Bounding_Coordinate: 42.002167 Access_Constraints: none Use_Constraints: none Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Categories Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Alexandria Digital Library Feature Type Thesaurus Theme_Keyword: thermal features Theme: Theme_Keyword_Thesaurus: General glossary for mineral resources spatial data Theme_Keyword: Portable Document Format Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: geophysics Theme_Keyword: geologic structure Theme_Keyword: geothermal resources Theme_Keyword: gravimeter measurement Theme_Keyword: gravitational field (earth) Theme_Keyword: magnetic field (earth) Theme_Keyword: geospatial datasets Place: Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4 Place_Keyword: f41037 = Lake Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Donald Plouff Contact_Organization: USGS WR SW GD Contact_Address: Address_Type: mailing address Address: 345 Middlefield Road Mail Stop 989 City: Menlo Park State_or_Province: CA Postal_Code: 94025 Country: USA Contact_Voice_Telephone: 650-329-5312 Contact_Facsimile_Telephone: 650-329-5490 Contact_Electronic_Mail_Address: plouff@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/2006/1110/images/minimap.jpg Browse_Graphic_File_Description: Reduced-size image of a tectonic sketch map of this area, (447 x 580 pixels) Browse_Graphic_File_Type: JPEG Data_Quality_Information: Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Plouff, Donald A. Publication_Date: 19750617 Title: Gravity data in Crump Geyser area, Oregon Series_Information: Series_Name: NTIS PUBLICATION Issue_Identification: PB-245-426/AS Publication_Information: Publication_Place: Menlo Park, California Publisher: U.S. Geological Survey Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19750512 Ending_Date: 19750523 Source_Currentness_Reference: Duration of ground survey Source_Citation_Abbreviation: NTIS PB-245-426/AS Source_Contribution: Principal facts of gravity observations obtained from this report Process_Step: Process_Description: Creation of original metadata record Process_Date: 20080606 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Peter N Schweitzer Contact_Organization: USGS ER GD Contact_Position: Geologist Contact_Address: Address_Type: mailing address Address: 12201 Sunrise Valley Drive City: Reston State_or_Province: VA Postal_Code: 20192-0002 Country: USA Contact_Voice_Telephone: 703-648-6533 Contact_Facsimile_Telephone: 703-648-6252 Contact_Electronic_Mail_Address: pschweitzer@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Point Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Entity point Point_and_Vector_Object_Count: 355 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Geographic_Coordinate_Units: decimal degrees 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: 2006-1110.dbf Attribute: Attribute_Label: STA_CODE Attribute_Definition: Station identification and characteristics Attribute_Domain_Values: Unrepresentable_Domain: Values are given in two parts, separated by a space. The first part is an identifier without substantial scientific significance. The second part is a coded string of four characters, one upper case letter followed by three decimal digits. The characters in this coded string are interpreted according to the following tables: > Table 2. Location description code (digit one). > [The number after the alphabetical code indicates the total number of gravity stations for which the code was used.] > B 45 On level-line benchmark incorporated into U.S. Geological Survey vertical control system. > N 14 Near benchmark. > P 188 Location of surveyed elevation. > X 5 Near location markers such as section corners. > D 1 Near assumed location of any of the above markers that were destroyed or not found. > R 1 Lake or reservoir elevation determined from leveling to benchmark. > F 32 Near a location with or without a marker at which a surveyed elevation is indicated on a published topographic map. > G 58 Near a location (on a manuscript map or a published map) at which spot elevations are determined by photogrammetry or near a doubtful F-location. > W 12 Near edge of lake or canal; interpolated elevation or elevation given for water at unknown height relative to present level. > > Table 3. Accuracy of elevations (digit two). > [The number after the numerical code indicates the total number of stations for which the code was used. Note that uncertainty of horizontal location tends to reduce the elevation accuracy]. > Code Number Accuracy (feet) > 1 230 0.1 On benchmark; surveyed elevation > 2 10 0.5 Elevation difference hand-leveled to nearby benchmark > 3 7 1 Near benchmark or checked water level > 4 2 2 Near assumed location of benchmark that was not found > 5 70 5 Near location with 10-foot contour interval > 6 36 10 Photogrammetric elevation on map with 20-foot contour interval > 7 1 20 Uncertain location of spot elevation point > > Table 4. Accuracy of horizontal location (digit three). > [The number after the numerical code indicates the total number of stations for which the code was used.] > Code Number Accuracy (feet) > 2 252 84 Near section corners and benchmarks; surveyed locations > 3 80 210 Near road intersection, stream crossings, hillcrests > 4 22 420 Road curve; uncertain spot elevation location > 5 2 840 Location depends on odometer measurement or other estimate > > Table 5. Accuracy of observed gravity (digit four). > [The number after the numerical code indicates the total number of stations for which the code was used. Accuracies are relative to the value at the Adel base station.] > Code Number Accuracy (mgal) > 2 3 0.02 Reading repeated several times > 3 8 0.05 Repeated reading > 4 345 0.10 Non-repeated reading Attribute: Attribute_Label: LATITUDE Attribute_Definition: Geographic latitude Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 42.0021670 Range_Domain_Maximum: 42.4456670 Attribute_Units_of_Measure: decimal degrees Attribute: Attribute_Label: LONGITUDE Attribute_Definition: Geographic longitude Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -120.0813330 Range_Domain_Maximum: -119.7083330 Attribute_Units_of_Measure: decimal degrees Attribute: Attribute_Label: ELEV_FT Attribute_Definition: Ground elevation at the observation point Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4466.70 Range_Domain_Maximum: 6047.00 Attribute_Units_of_Measure: feet Attribute: Attribute_Label: OBS_GRAV Attribute_Definition: Observed gravity Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 919882.550 Range_Domain_Maximum: 979969.240 Attribute_Units_of_Measure: mGal Attribute: Attribute_Label: FR_AIR_ANO Attribute_Definition: Free air anomaly Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -35.050 Range_Domain_Maximum: 27.410 Attribute_Units_of_Measure: mGal Attribute: Attribute_Label: TER_HND Attribute_Definition: Hand terrain corrections, using conventional cylindrical compartments, estimated in the distance interval from the station location to 0.9 km (2,936 feet) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.070 Range_Domain_Maximum: 2.750 Attribute: Attribute_Label: TER_TOT Attribute_Definition: Total terrain correction Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.570 Range_Domain_Maximum: 7.300 Attribute: Attribute_Label: BOUG_2_67 Attribute_Definition: Complete Bouguer anomaly with reduction density of 2.67 g/cm3 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -188.380 Range_Domain_Maximum: -161.080 Attribute_Units_of_Measure: mGal Attribute: Attribute_Label: BOUG_2_50 Attribute_Definition: Complete Bouguer anomaly with reduction density of 2.50 g/cm3 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -178.610 Range_Domain_Maximum: -151.400 Attribute_Units_of_Measure: mGal Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS Information Services Contact_Address: Address_Type: mailing Address: Box 25286, Denver Federal Center City: Denver State_or_Province: Colorado Postal_Code: 80255-0046 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS Contact_Facsimile_Telephone: 1-303-202-4695 Contact_Electronic_Mail_Address: infoservices@usgs.gov Resource_Description: USGS Open-File Report 2006-1110 Distribution_Liability: This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards (or with the North American Stratigraphic Code). Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Shapefile Format_Version_Number: 1.0 Format_Information_Content: Principal facts from gravity stations File_Decompression_Technique: unzip Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2006/1110/2006-1110.zip Fees: none Metadata_Reference_Information: Metadata_Date: 20150223 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Peter N Schweitzer Contact_Organization: USGS Midwest Area Contact_Position: Collection manager, USGS Geoscience Data Clearinghouse, http://geo-nsdi.er.usgs.gov/ Contact_Address: Address_Type: mailing address Address: Mail Stop 954 12201 Sunrise Valley Dr City: Reston State_or_Province: VA Postal_Code: 20192-0002 Country: USA Contact_Voice_Telephone: 703-648-6533 Contact_Facsimile_Telephone: 703-648-6252 Contact_Electronic_Mail_Address: pschweitzer@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998