Identification_Information: Citation: Citation_Information: Originator: Ren A. Thompson Originator: Kenzie J. Turner Originator: Ralph R. Shroba Originator: Michael A. Cosca Originator: Cal A. Ruleman Originator: John P. Lee Originator: Theodore R. Brandt Publication_Date: 2014 Title: Geologic Map of the Ute Mountain 7.5-minute Quadrangle, Taos County, New Mexico and Conejos and Costilla Counties, Colorado Edition: 1.0 Geospatial_Data_Presentation_Form: Map Series_Information: Series_Name: Scientific Investigations Map Issue_Identification: 3284 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Online_Linkage: http://dx.doi.org/10.3133/sim3284 Description: Abstract: The Ute Mountain 7.5' quadrangle is located in the south-central part of the San Luis Basin of northern New Mexico, in the Rio Grande del Norte National Monument, and contains deposits that record volcanic, tectonic, and associated alluvial and colluvial processes over the past four million years. Ute Mountain has the distinction of being one of the largest intermediate composition eruptive centers of the Taos Plateau, a largely volcanic tableland occupying the southern portion of the San Luis Basin. Ute Mountain rises to an elevation in excess of 3,000 m, nearly 700 m above the basaltic plateau at its base, and is characterized by three distinct phases of Pliocene eruptive activity recorded in the stratigraphy exposed on the flanks of the mountain and in the Rio Grande gorge. Unconformably overlain by largely flat-lying lava flows of Servilleta Basalt, the area surrounding Ute Mountain records a westward thickening of basin-fill volcanic deposits interstratified in the subsurface with Pliocene basin-fill sedimentary deposits derived from older Tertiary and Precambrian sources to the east. Superimposed on this volcanic stratigraphy are alluvial and colluvial deposits derived from the flanks of Ute Mountain and more distally- derived alluvium from the uplifted Sangre de Cristo Mountains to the east that record a complex temporal and stratigraphic succession of Quaternary basin deposition and erosion. Pliocene and younger basin deposition was accommodated along predominantly north-trending fault-bounded grabens. These poorly exposed fault scarps cutting lava flows of Ute Mountain volcano. The Servilleta Basalt and younger surficial deposits record largely down-to-east basinward displacement. Faults are identified with varying confidence levels in the map area. Recognizing and mapping faults developed near the surface in young, brittle volcanic rocks is difficult because: (1) they tend to form fractured zones tens of meters wide rather than discrete fault planes, (2) the relative youth of the deposits has resulted in only modest displacements on most faults, and (3) some of the faults may have significant strike-slip components that do not result in large vertical offsets that are readily apparent in offset of sub-horizontal contacts. Those faults characterized as “certain” either have distinct offset of map units or had slip planes that were directly observed in the field. Lineaments defined from magnetic anomalies form an additional constraint on potential fault locations and are indicated as such on the map sheet. Purpose: To provide a geologic map database of the quadrangle that improves understanding of the volcanic events surrounding development of Ute Mountain and Quaternary surficial deposition of basin deposits. Supplemental_Information: FILES INCLUDED IN THIS DATA SET: Dataset compiled in ESRI ArcGis 9.3 geodatabase** format (shapefiles included) UteMtn_geology.gdb: ArcGIS file geodatabase ute_geol: feature dataset with geologic feature classes >>ute_geolines: Line feature class that includes geologic contacts, faults, etc. >>ute_labels: Point feature class that includes geologic unit and name >>ute_polygons: Polygon feature class that includes geologic unit and name >>ute_aeromag: Line feature class that includes Aeromagnetic lineaments >>ute_sample: Point feature class that includes samples located within the quadrangle boundary > >Raster files: >ute_mtn_base.tif/.tfw: bitmap image >ute_mtn_hillshade.tif/.tfw: hillshade image Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2013 Currentness_Reference: Publication Date Status: Progress: Complete Maintenance_and_Update_Frequency: Mapping is continuing in adjacent areas and a revised compilation map may be completed in the future. Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -105.75 East_Bounding_Coordinate: -105.625 North_Bounding_Coordinate: 37.00 South_Bounding_Coordinate: 36.875 Keywords: Theme: Theme_Keyword_Thesaurus: AGI Glossary of Geology Theme_Keyword: geologic map Theme_Keyword: fault Theme_Keyword: volcanism Theme_Keyword: piedmont-slope alluvium Theme_Keyword: Taos Plateau volcanic field Theme_Keyword: composite volcano Theme_Keyword: dacite Theme_Keyword: basalt Theme_Keyword: subalkaline Place: Place_Keyword_Thesaurus: Board of Geographic Names Place_Keyword: United States Place_Keyword: Colorado Place_Keyword: New Mexico Place_Keyword: Conejos County Place_Keyword: Costilla County Place_Keyword: Taos County Place_Keyword: San Luis Valley Place_Keyword: Rio Grande Place_Keyword: Ute Mountain Place_Keyword: Canon del Rio Grande Stratum: Stratum_Keyword_Thesaurus: National Geologic Map Database Geologic Names Lexicon (http://ngmdb.usgs.gov/Geolex/geolex_home.html) Stratum_Keyword: Servilleta Basalt Stratum_Keyword: Santa Fe Group Temporal: Temporal_Keyword_Thesaurus: International Commission on Stratigraphy (http://www.stratigraphy.org) Temporal_Keyword: Cenozoic Temporal_Keyword: Quaternary Temporal_Keyword: Tertiary Temporal_Keyword: Pliocene Temporal_Keyword: Pliestocene Temporal_Keyword: Holocene Access_Constraints: none Use_Constraints: Users of this geospatial database and geologic information derived there from should acknowledge the U.S. Geological Survey as the source of the data. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Ren A. Thompson Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: Mailing address Address: Box 25046, MS 980, DFC City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-0929 Contact_Facsimile_Telephone: 303-236-5349 Contact_Electronic_Mail_Address: rathomps@usgs.gov Data_Set_Credit: Funding for the project was provided by the National Cooperative Geologic Mapping Program of the U.S. Geological Survey. Native_Data_Set_Environment: ARC/INFO version 9.3 Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/sim/3284/downloads/SIM3284.pdf Browse_Graphic_File_Description: Graphical representation of the map Browse_Graphic_File_Type: pdf Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Attributes were checked by manually comparing hard copy plots of the digital data with source materials. Authors and USGS map editors performed separate reviews. Logical_Consistency_Report: Map elements were checked by the authors for overshoots, undershoots, duplicate features, and other errors. There is a static topological relationship between the utegeolines and polygon feature classes. Features were not duplicated, but coincident lines exist between data layers where appropriate. Completeness_Report: Geologic map units were collected and digitized at appropriate resolution for portrayel on a base at 1:24:000-scale. Data are complete: no features were eliminated or generalized. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Potential exists for errors in location by the geologist in the field but many locations of many contacts were aided at control sites by use of a global positioning receiver with typical horizontal accuracies less than 20 meters. Lineage: Process_Step: Process_Description: Original mapping of the geology Process_Date: 2006-2012 Process_Step: Process_Description: The original data were imported into ArcMap/ArcInfo as point data. Process_Date: 2007-2012 Process_Step: Process_Description: Point data were used to help constrain the geologist's placement of geologic contacts, faults, and folds. Process_Date: 2008-2012 Process_Step: Process_Description: Label points were created designating each geologic unit. Final geologic polygons were created through an automated process in ArcCatalog based on the ute_geolines and ute_labels feature classes. Process_Date: 2012 Process_Step: Process_Description: Draft check plots of the geologic map and explanation were created and submitted for peer review. Geologists reviewed the plots for conformity with U.S. Geological Survey editorial standards and Stratigraphic nomenclature. Revisions were made to the geospatial database as needed. Process_Date: 2011 Process_Step: Process_Description: First draft of metadata created Process_Date: 2013 Process_Step: Process_Description: The database files, metadata, and check plots were edited by the USGS Publishing Service Center in Denver, Colorado, and revisions made to the geospatial database and metadata as needed. Process_Date: 2013 Process_Step: Process_Description: The geospatial database files and metadata were quality checked for completeness and consistency. Process_Date: 2013 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector 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: 500,000.0 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 9 meters Ordinate_Resolution: 9 meters Planar_Distance_Units: Meters 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: Overview_Description: Entity_and_Attribute_Overview: The data were created in ArcGIS in Geodatabase format. The feature dataset representing the geology contains 5 feature clases. A static topologic relationships is established between ute_geolines, ute_labels, and ute_polygons. The following description explains the user defined features within each feature class. Feature classes are as follows: ute_geolines: contacts, faults, dikes and other boundaries used to create topologic boundaries of polygons; ute_labels: label points indicating geologic unit; ute_polygons: areas representing distribution of geologic unit; ute_aeromag: aeromagnetic lineaments interpreted from reduced to pole aeromagnetic data; ute_samples: sample point locations for samples used in the tables for geochemistry and geochronology. >---------------------------------------------------------------- >Database structure of 'ute_polygons': >---------------------------------------------------------------- >Feature class type: polygon > >Field Name Data Type >Unit Text >Description Text >Age Text > > >Descriptions of user-defined database items in 'ute_polygons': >Unit: Abbreviated name of map unit >Description: Name of map unit >Age: Geologic age > >Unique item list for 'ute_polygons': >Unit Description Age >af Artificial fill latest Holocene >Qa Valley-floor alluvium Holocene >Qac Alluvium and colluvium, undivided Holocene and late Pleistocene >Qai Intermediate piedmont-slope alluvium late? and middle Pleistocene >Qao1 Highest older piedmont-slope alluvium middle Pleistocene >Qao2 Higher older piedmont-slope alluvium middle Pleistocene >Qao3 Lower older piedmont-slope alluvium middle Pleistocene >Qay Younger piedmont-slope alluvium late Pleistocene >Qc Colluvium, undivided Holocene to middle Pleistocene >Qfi Intermediate fan deposits late? and middle Pleistocene >Qfo Older fan deposits middle Pleistocene >Qfy Younger fan deposits late Pleistocene >Qfyy Youngest fan deposits Holocene >Qg Gravelly alluvium middle Pleistocene >Qsa Sheetwash and valley-floor alluvium, undivided Holocene and late Pleistocene >Qsw Sheetwash alluvium Holocene and late Pleistocene >Qt Talus deposits Holocene to middle? Pleistocene >QTsf Santa Fe Group, upper part middle? Pleistocene to Pliocene >Tac Basaltic trachyandesite of Costilla Creek Pliocene >Taul Lower trachyandesite of Ute Mountain Pliocene >Taum Middle trachyandesite of Ute Mountain Pliocene >Tauu Upper basaltic trachyandesite of Ute Mountain Pliocene >Tbu Trachybasalt of Ute Mountain Pliocene >Tsb Servilleta Basalt Pliocene >w Water > > >---------------------------------------------------------------- >Database structure of 'ute_labels': >---------------------------------------------------------------- >Feature class type: point > >Field Name Data Type >Unit Text >Description Text > > >Descriptions of user-defined database items in 'ute_labels': >Unit: Abbreviated name of map unit >Description: Name of map unit and geologic age > >Unique item list for 'ute_labels': >Unit Description >af Artificial fill latest Holocene >Qa Valley-floor alluvium Holocene >Qac Alluvium and colluvium, undivided Holocene and late Pleistocene >Qai Intermediate piedmont-slope alluvium late? and middle Pleistocene >Qao1 Highest older piedmont-slope alluvium middle Pleistocene >Qao2 Higher older piedmont-slope alluvium middle Pleistocene >Qao3 Lower older piedmont-slope alluvium middle Pleistocene >Qay Younger piedmont-slope alluvium late Pleistocene >Qc Colluvium, undivided Holocene to middle Pleistocene >Qfi Intermediate fan deposits late? and middle Pleistocene >Qfo Older fan deposits middle Pleistocene >Qfy Younger fan deposits late Pleistocene >Qfyy Youngest fan deposits Holocene >Qg Gravelly alluvium middle Pleistocene >Qsa Sheetwash and valley-floor alluvium, undivided Holocene and late Pleistocene >Qsw Sheetwash alluvium Holocene and late Pleistocene >Qt Talus deposits Holocene to middle? Pleistocene >QTsf Santa Fe Group, upper part middle? Pleistocene to Pliocene >Tac Basaltic trachyandesite of Costilla Creek Pliocene >Taul Lower trachyandesite of Ute Mountain Pliocene >Taum Middle trachyandesite of Ute Mountain Pliocene >Tauu Upper basaltic trachyandesite of Ute Mountain Pliocene >Tbu Trachybasalt of Ute Mountain Pliocene >Tsb Servilleta Basalt Pliocene >w Water > >---------------------------------------------------------------- >Database structure of 'ute_geolines': >---------------------------------------------------------------- >Feature class type: line > >Field Name Data Type >Description Text > > >Description of user-defined database items in 'ute_geolines': >Description: Cartographic description of feature > >Unique item list for 'ute_geolines': >Description >Contact-Certain >Normal fault-Certain >Normal fault-Concealed >Dike >Map boundary >Shoreline > >---------------------------------------------------------------- >Database structure of 'ute_aeromag': >---------------------------------------------------------------- >Feature class type: line > >Field Name Data Type >Description Text > > >Description of user-defined database items in 'ute_aeromag': >Description: Cartographic description of feature > >Unique item list for 'ute_aeromag': >Description >Aeromagnetic Lineament > > > >---------------------------------------------------------------- >Database structure of 'ute_sample': >---------------------------------------------------------------- >Feature class type: point > >Field Name Data Type >Sample Text >Unit Text >NumericAge Floating >AgeError Floating >AgeUnits Text >Notes Text > > >Description of user-defined database items in 'ute_sample': >Sample: Sample number >Unit: Unit sample represents >NumericAge Age in millions of years determined using >40Ar/39Ar geochronology >AgeError: 2 Sigma error in millions of years >AgeUnits: Ma = Mega Anum, millions of years ago >Notes: Notes regarding the age determination > > Entity_and_Attribute_Detail_Citation: none Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: Mailing Address Address: U.S.G.S. Information Services U.S. Geological Survey Box 25286, DFC City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS Contact_Electronic_Mail_Address: http://answers.usgs.gov Distribution_Liability: This database, identified as SIM3284, has been approved for release and publication by the Director of 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. 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. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ArcGis Geodatabase ArcView Shape Files Format_Version_Number: 9.3 File_Decompression_Technique: ZIP archive (Windows) Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/sim/3284 Fees: None Metadata_Reference_Information: Metadata_Date: 2013 Metadata_Review_Date: 2013 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Kenzie J. Turner Contact_Address: Address_Type: Mailing Address Address: Box 25046, MS 980, DFC City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-4610 Contact_Facsimile_Telephone: 303-236-5349 Contact_Electronic_Mail_Address: kturner@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata ("CSDGM version 2") Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: none Metadata_Use_Constraints: none