Metadata: Identification_Information: Citation: Citation_Information: Originator: Michaela R. Johnson Publication_Date: 2015 Title: X-Ray Diffraction Analysis Results for Grab Samples, Western Alaska Range, Alaska, July 2013 Edition: 1.0 Other_Citation_Details: RESULTS_XRD_analysis_July2013 Geospatial_Data_Presentation_Form: Tabular Digital Data Online_Linkage: http://pubs.usgs.gov/ds/943/downloads/ Larger_Work_Citation: Citation_Information: Originator: Michaela R. Johnson Originator: Garth E. Graham Originator: Bernard E. Hubbard Originator: William M. Benzel Publication_Date: 2015 Title: Geospatial Compilation of Results from Field Sample Collection in Support of Mineral Resource Investigations, Western Alaska Range, Alaska, July 2013 Geospatial_Data_Presentation_Form: Publication (Other) Series_Information: Series_Name: Data Series Issue_Identification: 943 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/ds/ Description: Abstract: This Data Series summarizes results from July 2013 sampling in the western Alaska Range near Mount Estelle, Alaska. The fieldwork combined in situ and camp-based spectral measurements of talus/soil and rock samples. Soil samples were analyzed by x-ray diffraction and soil and rock samples were submitted for quantitative geochemical analysis (55 element, major and trace elements) to establish mineralogical and geochemical character. The results and site photographs are presented in a geodatabase that accompanies this report. The spectral, mineralogical and geochemical characterization of these samples and the sites that they represent can be used to validate existing remote sensing datasets (e.g., ASTER) and future hyperspectral studies. Empirical evidence of jarosite, as identified by x-ray diffraction and spectral analysis, corresponding with gold concentrations in excess of 50 ppb in soil samples, suggests that surficial mapping of jarosite in regional surveys may be useful for targeting mineral resources. Purpose: The purpose of this Data Series is to compile, organize, and archive field data collected July 2013 with analytical results for use in a geodatabase format containing site locations, results, and sample photographs. The results presented in this data series were collected in preparation of future imaging spectroscopy collections and will be used for validation of the remote sensing data. These results could also be used to validate existing data such as Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER). Supplemental_Information: This dataset was developed using a Geographic Information System (GIS). The GIS software used to develop this dataset was Environmental Systems Research Institute (ESRI, Inc.) ArcDesktop 10.2.2. The geodatabase and shapefile structures are described below. GEODATABASE The geodatabase houses the main data as a feature dataset, Locations, with three feature classes: InSitu_Spectral_Measurement, InSitu_Traverse_Spectral_Measurement, and Samples. The four tables of results are also contained in the geodatabase. Western_Alaska_Range_samples_July2013.gdb\ -Locations\ ---InSitu_Spectral_Measurement ---InSitu_Traverse_Spectral_Measurement ---Samples -RESULTS_Geochemical_analysis_July2013 -RESULTS_MICA_1micron_July2013 -RESULTS_MICA_2micron_July2013 -RESULTS_XRD_analysis_July2013 The geodatabase also has ancillary relationship classes and tables that are visible to the user. The relates between feature classes and results tables are stored as individual relationship classes within the feature dataset, Locations. They are only used for the relate and use the naming convention, RELATE + feature class + results table, for example, RELATE_InSitu_Spectral_Measurement_RESULTS_MICA_1micron_July2013. -Locations\ -RELATE_InSitu_Spectral_Measurement_RESULTS_MICA_1micron_July2013 (SPECPRno) -RELATE_InSitu_Spectral_Measurement_RESULTS_MICA_2micron_July2013 (SPECPRno) -RELATE_InSitu_Traverse_Spectral_Measurement_RESULTS_MICA_1micron_July2013 (SPECPRno) -RELATE_InSitu_Traverse_Spectral_Measurement_RESULTS_MICA_2micron_July2013 (SPECPRno) -RELATE_Sample_RESULTS_Geochemical_analysis_July2013 (Sample_ID) -RELATE_Sample_RESULTS_MICA_1micron_July2013 (Sample_ID) -RELATE_Sample_RESULTS_MICA_2micron_July2013 (Sample_ID) -RELATE_Sample_RESULTS_XRD_analysis_July2013 (Sample_ID) As a result of adding photos as attachments to the feature classes a new table and relationship class are added for the sole purpose of defining that association and use the naming convention, __ + feature class + attachment details, for example, __InSitu_Spectral_Measurement__ATTACH (table) and __InSitu_Spectral_Measurement__ATTACHREL (relationship class). Western_Alaska_Range_samples_July2013.gdb\ -__InSitu_Spectral_Measurement__ATTACH -__InSitu_Spectral_Measurement__ATTACHREL -__InSitu_Traverse_Spectral_Measurement__ATTACH -__InSitu_Traverse_Spectral_Measurement__ATTACHREL -__Sample__ATTACH -__Sample__ATTACHREL FGDC-compliant metadata is embedded within the geodatabase with each feature class and table. SHAPEFILE The data released in shapefile format is structured similary to the geodatabase within directories. The shapefiles are stored within the main directory, Western_Alaska_Range_samples_July2013_shp. Layer files (*.lyr) are provided with each shapefile and house the relates to the results tables ready to use. Western_Alaska_Range_samples_July2013_shp\ -InSitu_Spectral_Measurement.* (*.shp and *.lyr) -InSitu_Traverse_Spectral_Measurement.* (*.shp and *.lyr) -Samples.* (*.shp and *.lyr) The results data tables as comma-delimited files are stored in the directory, RESULTS_data_tables, and the photos are stored in the directory, photo, separated by collection type, in situ or sample. Western_Alaska_Range_samples_July2013_shp\ -photo\ ---insitu\ ---sample\ -RESULTS_data_tables\ ---RESULTS_Geochemical_analysis_July2013.csv ---RESULTS_MICA_1micron_July2013 ---RESULTS_MICA_2micron_July2013 ---RESULTS_XRD_analysis_July2013 FGDC-compliant metadata is embedded within each shapefile and is provided separately within the directory, metadata, for each feature class and table. Western_Alaska_Range_samples_July2013_shp\ -metadata\ ---InSitu_Specimen_FGDC.txt ---InSitu_Specimen_FGDC.xml ---InSitu_Traverse_FGDC.txt ---InSitu_Traverse_FGDC.xml ---RESULTS_Geochemical_analysis_July2013_FGDC.txt ---RESULTS_Geochemical_analysis_July2013_FGDC.xml ---RESULTS_MICA_1micron_July2013_FGDC.txt ---RESULTS_MICA_1micron_July2013_FGDC.xml ---RESULTS_MICA_2micron_July2013_FGDC.txt ---RESULTS_MICA_1micron_July2013_FGDC.xml ---RESULTS_XRD_analysis_July2013_FGDC.txt ---RESULTS_XRD_analysis_July2013_FGDC.xml ---Sample_FGDC.txt ---Sample_FGDC.xml Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20130714 Ending_Date: 20130720 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -153.26422 East_Bounding_Coordinate: -152.66399 North_Bounding_Coordinate: 62.26939 South_Bounding_Coordinate: 61.479536667 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificinformation Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: geochemistry Theme_Keyword: XRD Theme_Keyword: X-ray diffraction Theme_Keyword: spectrometer Theme_Keyword: spectroradiometer Theme_Keyword: mineral Theme_Keyword: MICA Theme_Keyword: PRISM Theme_Keyword: geodatabase Theme_Keyword: geotagged photograph Place: Place_Keyword_Thesaurus: USGS Geographic Names Information System (GNIS) Place_Keyword: Alaska Range Place_Keyword: Mount Estelle Place_Keyword: Kohlsaat Peak Place_Keyword: Skwentna River Place_Keyword: Tordrillo Mountains Access_Constraints: None. Please see 'Distribution Info' for details. Use_Constraints: There is no guarantee concerning the accuracy of the data. Any user who modifies the data is obligated to describe the types of modifications they perform. Data have been checked to ensure the accuracy. If any errors are detected, please notify the originating office. The U.S. Geological Survey strongly recommends that careful attention be paid to the metadata file associated with these data. Acknowledgment of the U.S. Geological Survey would be appreciated in products derived from these data. User specifically agrees not to misrepresent the data, nor to imply that changes made were approved or endorsed by the U.S. Geological Survey. Please refer to for the USGS disclaimer. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Southwest Region Contact_Person: Michaela R Johnson Contact_Position: Hydrologist Contact_Address: Address_Type: Physical Address: Mail Stop 964, West 6th Ave. & Kipling St., DFC Bldg. 20 City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: US Contact_Voice_Telephone: 303.236.2464 Contact_Electronic_Mail_Address: mrjohns@usgs.gov Data_Set_Credit: Spatial datasets were developed by the U.S. Geological Survey Crustal Geophysics and Geochemistry Science Center (CGGSC) (M.R. Johnson) in support of the CGGSC and Central Mineral and Environmental Resources Science Centers' (CGGSC, CMERSC) project, Hyperspectral remote sensing data and a multi-proxy investigation for characterizing mineral resources in Alaska. We thank our outstanding helicopter pilot Shaylan Allmen for transporting us safely between sites. Reviews by Raymond Kokaly, Stuart Giles, and Carma San Juan are greatly appreciated. Native_Data_Set_Environment: Environment as of Metadata Creation: Microsoft [Unknown] Version 6.2 (Build 9200) ; ESRI ArcCatalog 10.2 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Attribute values in each database layer were assigned by the authors. Attribute fields and values were reviewed and checked for accuracy and consistency of terms. Logical_Consistency_Report: The dataset was constructed by processing data collected in the field and recorded in the field sheets and from laboratory based chemical and mineralogical analyses. The following criteria were chosen for the reporting of the data: - Each sample site has a unique identifier (SiteID). - Each sample site has a set of geographic coordinates (latitude and longitude). - Each sample collected in the field and analyzed for chemistry in the lab has a unique lab number. - Each analytical determination is linked to a valid, unique lab number. Completeness_Report: Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Spatial locations were determined from hand-held global positioning system (GPS) devices. In general, the GPS units used by field scientists recorded sample locations to within 100 feet (30 meters) of the true location. The locations were verified using a geographic information system (GIS) and digital topographic maps. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Not applicable. Lineage: Process_Step: Process_Description: Field collection, July 14-15, 2013 An ASD, Inc. spectrometer was used for In situ spectral measurements (speciman and traverse) at remote sites accessed via helicopter. Weather conditions were favorable for natural light conditions for measurement. Additional grab samples were also collected for further analysis (X-ray diffraction and geochemical analysis). Geotagged photographs were taken to document samples and measurements. Process_Date: 20130715 Process_Step: Process_Description: Field collection, July16-20, 2013 Weather conditions turned and samples were collected at remote sites accessed via helicopter. ASD, Inc. spectrometer was used to make spectral measurements of the samples at base camp using the light probe attachment. These samples were also collected for further analysis (X-ray diffraction and geochemical analysis). Geotagged photographs were taken to document samples. Process_Date: 20130720 Process_Step: Process_Description: Locations of samples and measurements The GPS coordinates for the in situ measurements and samples were exported to a comma-delimited file and attributed by type of collection. The locations were plotted in Arcmap as an add xy event and exported to shapefiles. Each location included the site identifier, sample identifier (Sample_ID), or the record number from the in situ measurements (SPECPRno) to relate the locations with the analysis results. Additionally the photograph identifier associated with each sample was added. Process_Date: 20130901 Process_Step: Process_Description: Geochemical analysis 48 soil (2 duplicates) and 5 rock samples were submited for analysis. Fifty-five major, rare earth and trace elements were determined for each sample by inductively coupled plasma-atomic emission spectrometry (ICP-AES) and inductively coupled plasma-mass spectrometry (ICP-MS). Process_Date: 20130915 Process_Step: Process_Description: Spectroscopic Measurements U.S. Geological Survey Processing Routines in IDL for Spectroscopic Measurements (PRISM) software with the routine Material Identification and Characterization Algorithm (MICA) (Kokaly, 2011) was used to process the in situ and sample measurements. The software compared the measurements against the USGS Spectral Library (Clark and others, 2007). Ranked fits of identified materials and minerals were output as comma-delimited format files grouped into 1-micron and 2-micron categories. Process_Date: 20140515 Process_Step: Process_Description: X-ray diffraction (XRD) analysis XRD analysis of the samples was conducted on the samples using the PANalytical “X’Pert Pro – MPD X-ray Diffractometer. Identification of mineral phases was done with Material Data Inc. (MDI) Jade (V 9.5) search-match software (Materials Data Inc., 2009) using the ICDD’s “2009 PDF-4” (International Centre for Diffraction Data, 2010) and National Institute Standards and Technology “FIZ/NIST Inorganic ICSD” databases (Fachinformationszentrum Karlsruhe (FIZ) and the National Institute of Standards and Technology (NIST), 2014). Process_Date: 20140919 Process_Step: Process_Description: Geodatabase A file geodatabase was created to house all the location, photo documentation, and results from the field collection in July, 2013. The location feature classes were stored in a feature dataset, Location, for each collection type, In Situ specimen, In Situ traverse, and Sample. Process_Date: 20140920 Process_Step: Process_Description: Photograph documentation The attachment option for each location feature class was enabled. The available photographs documenting each sample and measurement were added as attachments. Additionally, the attribute, PhotoLink, was added to be used with shapefile versions of these data. The directory location was provided to be used with the hyperlink tool. The user sets the local base diirectory in the map document properties. In layer properties check the box next to 'Support Hyperlinks using field:', select field, 'PhotoLink', and 'Document'. Process_Date: 20140920 Process_Step: Process_Description: Results tables The geochemical, 1-micron MICA, 2-micron MICA, and XRD result tables were formatted into comma-delimited files (*.csv files) for import into the geodatabase and to be provided with the shapefile version of the data. Process_Date: 20140920 Process_Step: Process_Description: Relationship classes Relates were added between the location feature classes and the results data tables. The Location: Sample feature class has 1-to-many relationships for geochemical, MICA, and XRD results with the primary keys: geochemical (Sample_ID), MICA (SPECPRno), and XRD (Sample_ID). The in situ speciman and traverse feature classes have 1-to-many relationships with the 1-micron and 2-micron MICA results tables with the primary key, SPECPRno. Process_Date: 20140920 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: 130 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0196481178 Longitude_Resolution: 0.0409100603 Geographic_Coordinate_Units: Decimal seconds Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257223563 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Attribute Table Entity_Type_Definition: Table containing results of XRD analyses. Entity_Type_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Lab_ID Attribute_Definition: Lab identifier assigned to each sample. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Unique identifier of each sample submitted for geochemical and XRD analysis and is identical for both the geochemical and X-ray diffraction results. Attribute: Attribute_Label: Sample_ID Attribute_Definition: Identifier assigned to each sample. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Unique identifier of each sample. The record relates the location of the sample with the geochemical and X-ray diffraction results. Attribute: Attribute_Label: Duplicate Attribute_Definition: Attribute indicates a duplicate sample submitted for analysis. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: d Enumerated_Domain_Value_Definition: Duplicate Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: amphibole Attribute_Definition: Sample content of amphibole group minerals identified by X-ray diffraction analyses. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 9 Attribute_Units_of_Measure: percentage Attribute: Attribute_Label: amph_TR Attribute_Definition: Sample contained trace amounts of amphibole group minerals identified by X-ray diffraction analyses. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: tr Enumerated_Domain_Value_Definition: trace Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: chlorite Attribute_Definition: Sample content of chlorite group minerals identified by X-ray diffraction analyses. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 14 Attribute_Units_of_Measure: percentage Attribute: Attribute_Label: clay_expandable Attribute_Definition: Sample content of expandable clay minerals identified by X-ray diffraction analyses. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7 Range_Domain_Maximum: 16 Attribute_Units_of_Measure: percentage Attribute: Attribute_Label: clay_TR Attribute_Definition: Sample contained trace amounts of clay minerals identified by X-ray diffraction analyses. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: tr Enumerated_Domain_Value_Definition: trace Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: cristobalite Attribute_Definition: Sample content of cristobalite mineral identified by X-ray diffraction analyses. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 1 Attribute_Units_of_Measure: percentage Attribute: Attribute_Label: hematite Attribute_Definition: Sample content of hematite group minerals identified by X-ray diffraction analyses. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 4 Attribute_Units_of_Measure: percentage Attribute: Attribute_Label: jarosite Attribute_Definition: Sample content of jarosite group minerals identified by X-ray diffraction analyses. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 17 Attribute_Units_of_Measure: percentage Attribute: Attribute_Label: jarosite_TR Attribute_Definition: Sample contained trace amounts of jarosite group minerals identified by X-ray diffraction analyses. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: tr Enumerated_Domain_Value_Definition: trace Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: K_feldspar Attribute_Definition: Sample content of Potassium-feldspar group minerals identified by X-ray diffraction analyses. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 45 Attribute_Units_of_Measure: percentage Attribute: Attribute_Label: kaolinite Attribute_Definition: Sample content of kaolinite group minerals identified by X-ray diffraction analyses. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 27 Attribute_Units_of_Measure: percentage Attribute: Attribute_Label: magnetite Attribute_Definition: Sample content of magnetite group minerals identified by X-ray diffraction analyses. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 3 Attribute_Units_of_Measure: percentage Attribute: Attribute_Label: mica Attribute_Definition: Sample content of mica group minerals identified by X-ray diffraction analyses. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 24 Attribute_Units_of_Measure: percentage Attribute: Attribute_Label: mica_TR Attribute_Definition: Sample contained trace amounts of mica group minerals identified by X-ray diffraction analyses. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: tr Enumerated_Domain_Value_Definition: trace Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: plagioclase Attribute_Definition: Sample content of plagioclase feldspar group minerals identified by X-ray diffraction analyses. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 13 Range_Domain_Maximum: 80 Attribute_Units_of_Measure: percentage Attribute: Attribute_Label: quartz Attribute_Definition: Sample content of quartz group minerals identified by X-ray diffraction analyses. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 8 Range_Domain_Maximum: 42 Attribute_Units_of_Measure: percentage Attribute: Attribute_Label: talc Attribute_Definition: Sample content of the talc mineral identified by X-ray diffraction analyses. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 16 Attribute_Units_of_Measure: percentage Attribute: Attribute_Label: SUM Attribute_Definition: Total of the content of mineral groups for each sample. The variability in the total is permissible and a result of typical error in the semi-quantiative mineral values. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 98 Range_Domain_Maximum: 102 Attribute_Units_of_Measure: percentage Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Southwest Region Contact_Person: Michaela R Johnson Contact_Position: Hydrologist Contact_Address: Address_Type: Physical Address: Mail Stop 964, West 6th Ave. & Kipling St., DFC Bldg. 20 City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: US Contact_Voice_Telephone: 303.236.2464 Contact_Electronic_Mail_Address: mrjohns@usgs.gov Distribution_Liability: This database has been approved for release and publication by the Director of the USGS. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made by the U.S. Geological Survey regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. No responsibility is assumed by the U.S. Geological Survey in the use of these data. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ESRI File Geodatabase Format_Version_Number: 10.2.2 File_Decompression_Technique: Compressed file (ZIP) Transfer_Size: 656 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/ds/943/downloads/ Fees: None. No fees are applicable for obtaining the data set. Metadata_Reference_Information: Metadata_Date: 20150418 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Michaela R Johnson Contact_Organization: U.S. Geological Survey, Southwest Region Contact_Position: Hydrologist Contact_Address: Address_Type: Physical Address: Mail Stop 964, West 6th Ave. & Kipling St., DFC Bldg. 20 City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: US Contact_Voice_Telephone: 303.236.2464 Contact_Electronic_Mail_Address: mrjohns@usgs.gov Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998