Identification_Information: Citation: Citation_Information: Originator: Barnaby W. Rockwell Publication_Date: 2012 Title: MAP OF MODELED HYDROTHERMAL ALTERATION TYPE Edition: 1.0 Geospatial_Data_Presentation_Form: remote-sensing image Series_Information: Series_Name: Scientific Investigations Map Issue_Identification: 3190 Publication_Information: Publication_Place: Denver, CO Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/sim/3190 Larger_Work_Citation: Citation_Information: Originator: Barnaby W. Rockwell Publication_Date: 2012 Publication_Time: Unknown Title: DESCRIPTION AND VALIDATION OF AN AUTOMATED METHODOLOGY FOR MAPPING MINERALOGY, VEGETATION, AND HYDROTHERMAL ALTERATION TYPE FROM ASTER SATELLITE IMAGERY WITH EXAMPLES FROM THE SAN JUAN MOUNTAINS, COLORADO Series_Information: Series_Name: Scientific Investigations Map Issue_Identification: 3190 Publication_Information: Publication_Place: Denver, CO Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/sim/3190 Description: Abstract: Mineral assemblages identified through analysis of remote sensing data acquired by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) were used to generate a map showing the type and spatial distribution of hydrothermal alteration in the western San Juan Mountains, southwestern Colorado. Boolean algebra was used to combine mineral assemblages identified through analysis of visible, near-infrared, and shortwave-infrared ASTER data into alteration types based on common mineralogical definitions of such types. Alteration types modeled in this way can be stratified relative to acid producing and neutralizing potential to aid in geoenvironmental watershed studies. This mapping was performed in support of multidisciplinary studies involving the predictive modeling of geochemical environments at watershed and regional scales. These studies seek to determine the relative effects of mining and non-anthropogenic hydrothermal alteration on watershed surface water geochemistry and faunal populations. These data have been orthorectified to the Universal Transverse Mercator (UTM) projection using a projective transform with ground control points and a digital elevation model from the USGS National Elevation Dataset (1/3 arc second, 10m resolution). This map, in ERDAS Imagine (.img) format, has been attributed by pixel value with material identification data that can be queried in most image processing and GIS software packages. Purpose: The purpose of the image is to display the type and spatial distirbution of hydrothermal alteration modeled by Boolean combination of mineral assemblages identified using ASTER satellite remote sensing data. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2000-09-12 Time_of_Day: 182242 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -107.962485 East_Bounding_Coordinate: -107.135649 North_Bounding_Coordinate: 38.130878 South_Bounding_Coordinate: 37.455461 Keywords: Theme: Theme_Keyword_Thesaurus: None. Theme_Keyword: ASTER Theme_Keyword: remote sensing Theme_Keyword: hydrothermal alteration type Theme_Keyword: epithermal Theme_Keyword: advanced argillic Theme_Keyword: phyllic Theme_Keyword: propylitic Place: Place_Keyword_Thesaurus: None. Place_Keyword: San Juan Mountains Place_Keyword: Silverton caldera Place_Keyword: Lake City caldera Place_Keyword: Colorado Place_Keyword: United States Access_Constraints: None. Use_Constraints: Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from these data. Data have been checked to ensure the accuracy of the data. 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. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ArcGIS and ERDAS Imagine formats, this metadata file may include some terminology specific to those software packages. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Barnaby W. Rockwell Contact_Organization: U.S. Geological Survey Contact_Position: Research Geophysicist Contact_Address: Address_Type: mailing address Address: Box 25046, Mail Stop 973 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: United States Contact_Voice_Telephone: 303-236-1851 Contact_Facsimile_Telephone: 303-236-3200 Contact_Electronic_Mail_Address: barnabyr@usgs.gov Hours_of_Service: 8:30 am - 5:00 pm Data_Set_Credit: Barnaby W. Rockwell, U.S. Geological Survey Central Mineral and Environmental Resources Science Center Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.3.1.4000 Cross_Reference: Citation_Information: Originator: Rockwell, B.W. Publication_Date: 2009 Publication_Time: Unknown Title: Comparison of ASTER- and AVIRIS-derived mineral and vegetation maps of the White Horse replacement alunite deposit and surrounding area, Marysvale volcanic field, Utah Series_Information: Series_Name: Scientific Investigations Report Issue_Identification: 2009-5117 Publication_Information: Publication_Place: Denver, CO Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/sir/2009/5117/ Data_Quality_Information: Logical_Consistency_Report: None. Completeness_Report: None. Lineage: Process_Step: Process_Description: Metadata imported. 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Source_Used_Citation_Abbreviation: C:\Users\barnabyr\AppData\Local\Temp\3\xml1D35.tmp Process_Date: 20101119 Process_Time: 14203600 Cloud_Cover: 0 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Pixel Row_Count: 4872 Column_Count: 4725 Vertical_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 13 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -105.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 15.000000 Ordinate_Resolution: 15.000000 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257224 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: sanjuans_aster_alteration5_pt-utm.img.vat Entity_Type_Definition: ERDAS Imagine file attributes Entity_Type_Definition_Source: ERDAS Attribute: Attribute_Label: OID 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: Value Attribute_Definition: Internal digital number Attribute_Definition_Source: Author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 13 Attribute: Attribute_Label: Red Attribute_Definition: Red value of color table Attribute_Definition_Source: Author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 1 Attribute: Attribute_Label: Green Attribute_Definition: Green value of color table Attribute_Definition_Source: Author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 1 Attribute: Attribute_Label: Blue Attribute_Definition: Blue value of color table Attribute_Definition_Source: Author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 1 Attribute: Attribute_Label: Opacity Attribute_Definition: Opacity of value - denotes whether or not a material ID has been assigned Attribute_Definition_Source: Author Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0 Enumerated_Domain_Value_Definition: Make value transparent, no material ID Enumerated_Domain_Value_Definition_Source: Author Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1 Enumerated_Domain_Value_Definition: Display value, material ID has been assigned Enumerated_Domain_Value_Definition_Source: Author Attribute: Attribute_Label: Count Attribute_Definition: Value frequency count Attribute_Definition_Source: Author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2850 Range_Domain_Maximum: 22203921 Attribute: Attribute_Label: Alteration Attribute_Definition: Modeled hydrothermal alteration type Attribute_Definition_Source: Author Attribute_Domain_Values: Unrepresentable_Domain: Modeled hydrothermal alteration type. Overview_Description: Entity_and_Attribute_Overview: Results of analysis of ASTER multispectral data showing identified clay, sulfate, mica, carbonate, Mg-OH, and hydrous quartz minerals. The digital number (DN) values in this image have been attributed by modeled alteration type as shown in the following table. Each DN value corresponds to a particular color in the included color table. All pixels identified as a particular alteration type have been assigned a single, discrete color. Value Count Red Green Blue Opacity Alteration 0 22203921 0 0 0 0 none detected 1 20762 1 0 0 1 advanced argillic 2 96681 1 1 0 1 argillic (or clay-bearing rocks) 3 62628 1 0.647058 0 1 argillic + ferric iron 4 2933 0.62745 0.129411 0.937254 1 hydrous silica (opal - chalcedony) 5 27490 0 1 1 1 QSP (phyllic) 6 126106 0 1 0 1 propylitic (or carbonate rocks) 7 52247 0.819607 0.709803 0.549019 1 propylitic + sericite 8 60209 1 0.713725 0.756862 1 propylitic + ferric iron 9 27302 0.647058 0.156862 0.156862 1 propylitic + sericite + ferric iron 10 43787 0 0.8 0.8 1 regional propylitic to weak QSP - minor sericite + ferric iron 11 290207 0 0 1 1 regional propylitic - Fe/Mg sericite +/- chlorite 12 2850 1 0 1 1 pyritic (jarosite) 13 3077 0.878431 0.482352 0.768627 1 highly pyritic QSP +/- hydrous silica Entity_and_Attribute_Detail_Citation: Author Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Position: U.S.G.S. Information Services Contact_Address: Address_Type: mailing address Address: P.O. Box 25286 City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS (1-888-275-8747) Contact_Electronic_Mail_Address: http://ask.usgs.gov Resource_Description: Downloadable Data 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 information product, for the most part, is in the public domain, it also contains copyrighted materials as noted in the text. Permission to reproduce copyrighted items for other than personal use must be secured from the copyright owner. This database, identified as SIM 3190, has been approved for release and publication by the USGS. Although this database 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. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ERDAS Format_Version_Number: 10.1 File_Decompression_Technique: no compression applied Transfer_Size: 25 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: //pubs.usgs.gov Fees: None. Metadata_Reference_Information: Metadata_Date: 20111128 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Barnaby W. Rockwell Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: Box 25046, Mail Stop 973 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: United States Contact_Voice_Telephone: (303) 236-1851 Contact_Facsimile_Telephone: (303) 236-3200 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 Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile