Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2004 Title: Thickness of Santa Fe Group sediments in the Espaņola Basin south of Santa Fe, New Mexico, as estimated from aeromagnetic data Geospatial_Data_Presentation_Form: raster digital data spreadsheet tabular digital data vector digital data Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: Open-File Report 2004-1354 Publication_Information: Publication_Place: Denver, Colorado, USA Publisher: U.S. Geological Survey Other_Citation_Details: This citation refers to the USGS FTP site where the digital data files from this report are located. Description: Abstract: This report presents an analysis of the maximum thickness of Santa Fe Group aquifers in the southern Espaņola basin south of Santa Fe, New Mexico, as estimated from quantitative analysis of high-resolution aeromagnetic data. Purpose: Aquifer thickness estimates provide guidance for characterizing the ground- water resources in between scattered water wells in this area of rapid urban development and declining water supplies. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2004 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -106.25 degrees W. longitude East_Bounding_Coordinate: -105.875 degrees W. longitude North_Bounding_Coordinate: 35.625 degrees N. latitude South_Bounding_Coordinate: 35.375 degrees N. latitude Keywords: Place: Place_Keyword_Thesaurus: none Place_Keyword: United States Place_Keyword: New Mexico Place_Keyword: Santa Fe Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: aquifer thickness Theme_Keyword: aquifer boundary Theme_Keyword: magnetic depth estimates Theme_Keyword: well data Access_Constraints: none Use_Constraints: none Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jeff Phillips Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: Box 25046, MS964 Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: 303-236-1206 Contact_Electronic_Mail_Address: jeff@usgs.gov Data_Set_Credit: Prepared in cooperation with the New Mexico Office of the State Engineer Native_Data_Set_Environment: The grids, polygons, and xyz files were created using the proprietary software Oasis Montaj, from Geosoft, Inc. and (or) public-domain software from the USGS. The grids were converted to Arc export format using the proprietary ArcGIS software from ESRI. The Excel spradsheet was created using the proprietary Excel software from Microsoft. Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Grid and point data values represent the thickness or elevation of the base of the Santa Fe Group sediments in feet as estimated from gridded aeromagnetic data. The aeromagnetic data were processed using formulas and methods that are documented in references cited in the report. Logical_Consistency_Report: The magnetic depth estimates in file eulerave.xyz represent aquifer thickness only in the area where the Santa Fe Group, defined by polygon file ancha.ply, is underlain by Espinaso Formation, defined by polygon file espinaso.ply. The gridded data in sfgthick.e00 and sfgbase.e00 have been masked to this area. Two areas of uncertain thickness due to variable or unknown sub-aquifer geology are indicated by the polygon file uncertain.ply. Completeness_Report: Study is complete for the area covered. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Horizontal positions of the point thickness data are estimated from the gridded aeromagnetic data using formulas and methods documented in the references of the report. Horizontal positions of the original aeromagnetic survey data were determined using GPS satellite navigation. Horizontal positions of polygon corners were digitized from geologic maps at 1:24,000 scale or smaller. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Vertical positions of the point thickness data are estimated from the gridded aeromagnetic data using formulas and methods documented in the references of the report. Vertical positions of the original aeromagnetic survey data were determined using GPS satellite navigation. Lineage: Process_Step: Process_Description: Construct Minimum Depth Surface: Available geologic maps were used to digitize the boundary of Santa Fe group exposures in the southern Espaņola Basin (file ancha.ply) and this file was used along with available well data, geologic cross sections, and an existing geophysical model (all in file pointdata.xls) to construct a surface representing the minimum depth to the base of the Santa Fe group (file sfgmds.e00). Process_Date: 2004 Process_Step: Process_Description: Estimate Magnetic Source Depths: Minimum depths to magnetic sources were estimated from high-resolution aeromagnetic data using the two-step Euler method as constrained by the minimum depth surface. Results are in file eulerave.xyz. Process_Date: 2004 Process_Step: Process_Description: Mask Depth Estimates: Assign depth solutions falling outside the Santa Fe group exposures to zero thickness values. Use existing geologic maps, well data, the aeromagnetic data, and the depth solutions to estimate the area where the Santa Fe Group sediments directly overlie magnetic rocks of Oligocene or older age. Non-zero depth solutions falling outside of this area are discarded. The remaining solutions represent estimates of Santa Fe Group thickness. Process_Date: 2004 Process_Step: Process_Description: Grid Thickness Estimates: Use minimum curvature gridding to grid the thickness estimates. Insert dummy values into the grid where there is no valid thickness information due to the absense of underlying magnetic rocks (file sfgthick.e00). Subtract this grid from digital terrain data to generate an elevation surface at the base of the Santa Fe Group (file sfgbase.e00). Process_Date: 2004 Process_Step: Process_Description: Final Steps: Identify areas where the thickness solutions are suspect, based on lack of geologic control (file uncertain.ply). Estimate the location of the Santa Fe embayment hinge line (file sfehinge.xyz). Process_Date: 2004 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: raster Raster_Object_Information: Raster_Object_Type: grid cell Row_Count: 581 Column_Count: 701 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: 0.9996 Longitude_of_Central_Meridian: -105.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500,000 m False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 50 Ordinate_Resolution: 50 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1886 Semi-major_Axis: 6371204.0 Denominator_of_Flattening_Ratio: 0.926 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: This metadata file describes related data files with the following names: pointdata.xls well and other point data sfgmds.e00 minimum depth surface grid (ft) sfgthick.e00 Santa Fe Group estimated thickness grid (ft) sfgbase.e00 base of the Santa Fe Group estimated elevation grid (ft) eulerave.xyz unedited magnetic depth estimates sfehinge.xyz estimated Santa Fe embayment hinge line location ancha.ply polygon enclosing the Santa Fe Group exposures espinaso.ply polygon enclosing the Espinaso Formation uncertain.ply polygons enclosing the areas of uncertain thickness Entity_and_Attribute_Detail_Citation: none Detailed_Description: Entity_Type: Entity_Type_Label: pointdata.xls - well and other point data Entity_Type_Definition: Excel spreadsheet Entity_Type_Definition_Source: Microsoft Attribute: Attribute_Label: Site ID Attribute_Definition: abbreviation for the well or site Attribute_Definition_Source: authors Attribute_Domain_Values: Unrepresentable_Domain: text values Attribute: Attribute_Label: UTM Easting NAD27 (m) Attribute_Definition: Universal Transverse Mercator easting in meters, NAD27 horizontal datum Attribute_Definition_Source: see Point Data References Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 396693 Range_Domain_Maximum: 420042 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: UTM Northing NAD27 (m) Attribute_Definition: Universal Transverse Mercator northing in meters, NAD27 horizontal datum. Attribute_Definition_Source: see Point Data References Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3923149 Range_Domain_Maximum: 3944262 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Point Data for MDS (ft) Attribute_Definition: depths (feet below ground surface) used to define the minimum depth surface (MDS). Attribute_Definition_Source: see Point Data References Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 20 Range_Domain_Maximum: 2866 Attribute_Units_of_Measure: feet Enumerated_Domain: Enumerated_Domain_Value: blank Enumerated_Domain_Value_Definition: data not used Enumerated_Domain_Value_Definition_Source: authors Attribute: Attribute_Label: Reference for MDS Attribute_Definition: source for the point data value used: 1. Well data (P. Johnson, written communication, 2004) 2. Well data (J.W. Hawley, written communication, 2000) 3. Well data (Read and others, 1999) 4. Geologic cross sections (Koning and Hallet, 2001) 5. Wells on cross sections (Koning and Hallett, 2001) 6. Geophysical profile model (Grauch and Bankey, 20) Attribute_Definition_Source: authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 6 Attribute_Units_of_Measure: reference index Enumerated_Domain: Enumerated_Domain_Value: blank Enumerated_Domain_Value_Definition: data not used Enumerated_Domain_Value_Definition_Source: authors Attribute: Attribute_Label: Other Point Data (ft) Attribute_Definition: other estimates of depth (feet below ground surface) at this location. Attribute_Definition_Source: see Point Data References Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 80 Range_Domain_Maximum: 649 Attribute_Units_of_Measure: feet Enumerated_Domain: Enumerated_Domain_Value: blank Enumerated_Domain_Value_Definition: no other estimates Enumerated_Domain_Value_Definition_Source: authors Attribute: Attribute_Label: Other Refs. Attribute_Definition: sources of other estimates of depth: 1. Well data (P. Johnson, written communication, 2004) 2. Well data (J.W. Hawley, written communication, 2000) 3. Well data (Read and others, 1999) 4. Geologic cross sections (Koning and Hallet, 2001) 5. Wells on cross sections (Koning and Hallett, 2001) Attribute_Definition_Source: authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 5 Attribute_Units_of_Measure: reference index Enumerated_Domain: Enumerated_Domain_Value: blank Enumerated_Domain_Value_Definition: no other estimates Enumerated_Domain_Value_Definition_Source: authors Attribute: Attribute_Label: Resampled MDS Attribute_Definition: interpolated depth at the site from the minimum depth surface Attribute_Definition_Source: authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 2855 Attribute_Units_of_Measure: feet Enumerated_Domain: Enumerated_Domain_Value: blank Enumerated_Domain_Value_Definition: outside of area Enumerated_Domain_Value_Definition_Source: authors Attribute: Attribute_Label: Gridding and Resampling Error Attribute_Definition: percent error in the resampled minimum depth surface Attribute_Definition_Source: authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: <10% Range_Domain_Maximum: >20% Attribute_Units_of_Measure: percent Enumerated_Domain: Enumerated_Domain_Value: blank Enumerated_Domain_Value_Definition: location not used Enumerated_Domain_Value_Definition_Source: authors Attribute: Attribute_Label: Estimated Thickness (ft) Attribute_Definition: estimated thickness of the Santa Fe Group at the site as interpolated from the results of the Euler depth analysis Attribute_Definition_Source: authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 43 Range_Domain_Maximum: 2792 Attribute_Units_of_Measure: feet Enumerated_Domain: Enumerated_Domain_Value: blank Enumerated_Domain_Value_Definition: unreliable or unavailable value Enumerated_Domain_Value_Definition_Source: authors Attribute: Attribute_Label: Disagreement with the Point Data Attribute_Definition: percent error in the estimated thickness Attribute_Definition_Source: authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: <10% Range_Domain_Maximum: >20% Attribute_Units_of_Measure: percent Enumerated_Domain: Enumerated_Domain_Value: blank Enumerated_Domain_Value_Definition: unreliable or unavailable value Enumerated_Domain_Value_Definition_Source: authors Attribute: Attribute_Label: Comments Attribute_Definition: notes on the thickness results at the site Attribute_Definition_Source: authors Attribute_Domain_Values: Unrepresentable_Domain: text values Detailed_Description: Entity_Type: Entity_Type_Label: sfgmds.e00 - minimum depth surface grid (ft) Entity_Type_Definition: Arc export raster grid Entity_Type_Definition_Source: ESRI Attribute: Attribute_Label: none Attribute_Definition: Gridded data for the minimum depth surface in (negative) feet below the ground surface. Attribute_Definition_Source: industry standard Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -2864 Range_Domain_Maximum: 0 Attribute_Units_of_Measure: feet Detailed_Description: Entity_Type: Entity_Type_Label: sfgthick.e00 - Santa Fe Group estimated thickness grid (ft) Entity_Type_Definition: Arc export raster grid Entity_Type_Definition_Source: ESRI Attribute: Attribute_Label: none Attribute_Definition: Gridded data for the estimated Santa Fe Group thickness in (negative) feet below the ground surface. Attribute_Definition_Source: industry standard Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -3379 Range_Domain_Maximum: 0 Attribute_Units_of_Measure: feet Enumerated_Domain: Enumerated_Domain_Value: -9999 Enumerated_Domain_Value_Definition: no thickness estimate Enumerated_Domain_Value_Definition_Source: authors Detailed_Description: Entity_Type: Entity_Type_Label: sfgbase.e00 - base of the Santa Fe Group estimated elevation grid (ft) Entity_Type_Definition: Arc export raster grid Entity_Type_Definition_Source: ESRI Attribute: Attribute_Label: none Attribute_Definition: Gridded data for the estimated base of the Santa Fe Group in feet above sea level. Attribute_Definition_Source: industry standard Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -2555 Range_Domain_Maximum: 6637 Attribute_Units_of_Measure: feet Enumerated_Domain: Enumerated_Domain_Value: -9999 Enumerated_Domain_Value_Definition: no thickness estimate Enumerated_Domain_Value_Definition_Source: authors Detailed_Description: Entity_Type: Entity_Type_Label: eulerave.xyz - unedited magnetic depth estimates Entity_Type_Definition: Geosoft XYZ ASCII export Entity_Type_Definition_Source: Geosoft, Inc. Attribute: Attribute_Label: UTMeastm Attribute_Definition: Universal Transverse Mercator easting in meters, NAD27 horizontal datum Attribute_Definition_Source: industry standard Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 385953.2775879 Range_Domain_Maximum: 421019.8059082 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: UTMnorthm Attribute_Definition: Universal Transverse Mercator northing in meters, NAD27 horizontal datum Attribute_Definition_Source: industry standard Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3915053.222656 Range_Domain_Maximum: 3943030.517578 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: depthm Attribute_Definition: Estimated minimum depth to magnetic sources below ground surface Attribute_Definition_Source: industry standard Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1274.2357254 Range_Domain_Maximum: 0 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: depthft Attribute_Definition: Estimated minimum depth to magnetic sources below ground surface Attribute_Definition_Source: industry standard Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -4180.56340355 Range_Domain_Maximum: 0 Attribute_Units_of_Measure: feet Attribute: Attribute_Label: percenterror Attribute_Definition: Estimated percent error in the depth estimate Attribute_Definition_Source: industry standard Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.765080749989 Range_Domain_Maximum: 14.99935913086 Attribute_Units_of_Measure: percent Attribute: Attribute_Label: SI Attribute_Definition: Estimated structural index of the source Attribute_Definition_Source: industry standard Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0.999836802483 Attribute_Units_of_Measure: none Detailed_Description: Entity_Type: Entity_Type_Label: sfehinge.xyz - estimated Santa Fe embayment hinge line location Entity_Type_Definition: Geosoft XYZ ASCII export Entity_Type_Definition_Source: Geosoft, Inc. Attribute: Attribute_Label: X Attribute_Definition: Universal Transverse Mercator easting in kilometers, NAD27 horizontal datum Attribute_Definition_Source: industry standard Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 397.8151123 Range_Domain_Maximum: 414.3734167 Attribute_Units_of_Measure: kilometers Attribute: Attribute_Label: Y Attribute_Definition: Universal Transverse Mercator northing in kilometers, NAD27 horizontal datum Attribute_Definition_Source: industry standard Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3932.851263 Range_Domain_Maximum: 3938.843282 Attribute_Units_of_Measure: kilometers Detailed_Description: Entity_Type: Entity_Type_Label: ancha.ply - polygon enclosing the Santa Fe Group exposures Entity_Type_Definition: Geosoft ASCII polygon file Entity_Type_Definition_Source: Geosoft, Inc. Attribute: Attribute_Label: (column 1) Attribute_Definition: Universal Transverse Mercator easting in kilometers, NAD27 horizontal datum Attribute_Definition_Source: industry standard Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 392.9394 Range_Domain_Maximum: 421.0878 Attribute_Units_of_Measure: kilometers Attribute: Attribute_Label: (column 2) Attribute_Definition: Universal Transverse Mercator northing in kilometers, NAD27 horizontal datum Attribute_Definition_Source: industry standard Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3918.937 Range_Domain_Maximum: 3943.116 Attribute_Units_of_Measure: kilometers Detailed_Description: Entity_Type: Entity_Type_Label: espinaso.ply - polygon enclosing the Espinaso Formation Entity_Type_Definition: Geosoft ASCII polygon file Entity_Type_Definition_Source: Geosoft, Inc. Attribute: Attribute_Label: (column 1) Attribute_Definition: Universal Transverse Mercator easting in kilometers, NAD27 horizontal datum Attribute_Definition_Source: industry standard Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 393.0146 Range_Domain_Maximum: 416.5698 Attribute_Units_of_Measure: kilometers Attribute: Attribute_Label: (column 2) Attribute_Definition: Universal Transverse Mercator northing in kilometers, NAD27 horizontal datum Attribute_Definition_Source: industry standard Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3917.152 Range_Domain_Maximum: 3943.164 Attribute_Units_of_Measure: kilometers Detailed_Description: Entity_Type: Entity_Type_Label: uncertain.ply - polygons enclosing the areas of uncertain thickness Entity_Type_Definition: Geosoft ASCII polygon file Entity_Type_Definition_Source: Geosoft, Inc. Attribute: Attribute_Label: (column 1) Attribute_Definition: Universal Transverse Mercator easting in kilometers, NAD27 horizontal datum Attribute_Definition_Source: industry standard Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 392.955 Range_Domain_Maximum: 416.5161 Attribute_Units_of_Measure: kilometers Attribute: Attribute_Label: (column 2) Attribute_Definition: Universal Transverse Mercator northing in kilometers, NAD27 horizontal datum Attribute_Definition_Source: industry standard Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3927.706 Range_Domain_Maximum: 3936.63 Attribute_Units_of_Measure: kilometers Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS Information Services Contact_Address: Address_Type: mailing address Address: Box 25286, Building 810 Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-202-4700 Contact_Electronic_Mail_Address: www.usgs.gov/pubprod Resource_Description: USGS Open-File Report OFR 2004-??? Distribution_Liability: Open-File Reports are used for the dissemination of information that must be released immediately to fill a public need or for information that is not sufficiently refined to warrant formal publication. As such, Open-File Reports should not be viewed as final reports of major scientific investigations. Because of their preliminary nature and possibility of being superseded, Open-File Reports do not introduce new or revised geologic, stratigraphic, hydrologic, or taxonomic nomenclature. In particular, Article 4(a) of the North American Stratigraphic Code excludes open-file releases for the naming or revising of formal geologic units. Metadata_Reference_Information: Metadata_Date: 20040930 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jeff Phillips Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: U.S. Geological Survey Box 25046 Mail Stop 964 Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-1206 Contact_Electronic_Mail_Address: jeff@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998