Identification_Information: Citation: Citation_Information: Originator: William R. Page Originator: Margaret E. Berry Originator: D. Paco VanSistine Originator: Scott R. Snyders Publication_Date: 2008 Title: Preliminary geologic map of the Laredo, Crystal City-Eagle Pass, San Antonio, and Del Rio 1° x 2° quadrangles, Texas, and the Nuevo Laredo, Ciudad Acuña, Piedras Negras, and Nueva Rosita 1° x 2° quadrangles, Mexico Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Online_Linkage: http://pubs.usgs.gov/of/2009/1015 Series_Information: Series_Name: USGS Open-File Report Issue_Identification: 2009-1015 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Description: Abstract: The map was compiled by integrating the geology of Laredo (Bureau of Economic Geology, 1976a), Crystal City-Eagle Pass (Bureau of Economic Geology, 1976b), San Antonio (Bureau of Economic Geology, 1974), and Del Rio (Bureau of Economic Geology, 1977) 1:250,000-scale Texas Geologic Atlas Sheets, and the Piedras Negras (Carrasco and others, 2003), Nuevo Laredo (Gutierrez and others, 2004), Ciudad Acuña (Martinez and others, 2003), and Nueva Rosita (Rodriguez and others, 2000) 1:250,000-scale geologic quadrangles, Mexico (fig. 1). The map area extends along the Rio Grande from San Ygnacio, Texas and Tamaulipas, to northwest of Del Rio, Texas, and Ciudad Acuña, Coahuila. Other urban centers in the map area include border sister cities Nuevo Laredo, Tamaulipas, and Laredo, Texas, and Piedras Negras, Coahuila, and Eagle Pass, Texas. The map is described below by three domains: an eastern part in the Gulf Coastal Plain, a western part in the Sabinas folded belt, and a northern part in the Edwards Plateau. Purpose: The purpose of this map is to provide an integrated, bi-national geologic map dataset for display and analyses on an Arc Internet Map Service (IMS) dedicated to environmental health studies in the US-Mexico border region (Buckler and Stefanov, 2004; Papoulias and others, 2006). The IMS website was designed by the US-Mexico Border Environmental Health Initiative project and collaborators, and the IMS and Project web site address is http://borderhealth.cr.usgs.gov/. The objective of the project is to acquire, evaluate, analyze, and provide earth, biologic, and human health resources data within a GIS framework (IMS) to further our understanding of possible linkages between the physical environment and public health issues. The geologic map dataset is just one of many datasets included in the Web site; other datasets include biologic, hydrologic, geographic, and human health themes. Supplemental_Information: Feature classes and shapefiles included in this dataset: laredo_fld - folds laredo_arc_geo - geologic contacts, faults and other linear features laredo_label_geo - polygon unit point labels laredo_poly_geo - geologic units and other polygon features laredo_pnt - geologic bedding, wells, and other point features us_flts - normal faults within the U.S. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2009 Currentness_Reference: publication date Status: Progress: complete Maintenance_and_Update_Frequency: none planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -102.0 East_Bounding_Coordinate: -98.0 North_Bounding_Coordinate: 30.0 South_Bounding_Coordinate: 27.0 Keywords: Theme: Theme_Keyword_Thesaurus: AGI Glossary of Geology Theme_Keyword: Geologic Map Theme_Keyword: Gulf Coastal Plain Theme_Keyword: Sabinas Folded belt Theme_Keyword: Edwards Plateau Theme_Keyword: US-Mexico Border Environmental Health Initiative Theme_Keyword: Balcones fault zone Place: Place_Keyword_Thesaurus: Board on Geographic Names Place_Keyword: Texas Place_Keyword: Tamaulipas Place_Keyword: Mexico Place_Keyword: USA Place_Keyword: Coahuila Place_Keyword: Del Rio Place_Keyword: Ciudad Acuna Place_Keyword: Coahuila Place_Keyword: Eagle Pass Place_Keyword: Piedras Negras Place_Keyword: Laredo Place_Keyword: Nuevo Laredo Place_Keyword: Tamaulipas Place_Keyword: San Antonio Place_Keyword: Rio Grande Place_Keyword: Amistad International Reservior Access_Constraints: None. Use_Constraints: None. Acknowledgement of the U.S. Geological Survey would be appropriate in products derived from these data. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Ric Page Contact_Organization: U.S. Geologic Survey Contact_Position: Geologist Contact_Voice_Telephone: 303-236-1141 Contact_Electronic_Mail_Address: rpage@usgs.gov Contact_Address: Address_Type: mailing Address: USGS Denver Federal Center MS-980 City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/2009/1015/ Browse_Graphic_File_Description: graphical representation of map Browse_Graphic_File_Type: PDF Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.6.1500 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Attributes have been checked by available authors and reviewers for accuracy and completenes. Logical_Consistency_Report: Map elements were visually checked for overshoots, undershoots, duplicate features, and other errors. Completeness_Report: All data are complete Lineage: Process_Step: Process_Description: The map was digitally compiled by integrating geologic unit polygons, lines, and point data from the Laredo, Crystal City-Eagle Pass, San Antonio, and Del Rio 1:250,000-scale Texas Geologic Atlas Sheets, and the Piedras Negras, Nuevo Laredo, Ciudad Acuña, and Nueva Rosita 1:250,000-scale quadrangles, Mexico. In ArcGIS, the geologic datasets listed above were queried by their original source unit symbol designations and were redefined into the new unit symbols used for the merged bi-national dataset. The datasets were then appended and boundaries removed between like units. Process_Date: 2007 Process_Step: Process_Description: Metadata created Process_Date: 2008 Source_Information: Source_Citation: Citation_Information: Originator: Buckler, D. Originator: Stefanov, J. Title: Internet Map Service for Environmental Health in the U.S. Mexico Border Region. Publication_Date: 2004 Series_Information: Series_Name: USGS Fact Sheet Issue_Identification: 2004-3140 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2004 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Buckler and Stefanov. (2004) Source_Contribution: basemap data Source_Information: Source_Citation: Citation_Information: Originator: Bureau of Economic Geology Title: Geologic Atlas of Texas, San Antonio Publication_Date: 1974 Series_Information: Series_Name: Geologic Atlas of Texas Issue_Identification: San Antonio Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1974 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Bureau of Economic Geology (1974) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: Bureau of Economic Geology Title: Geologic Atlas of Texas, Laredo Publication_Date: 1976 Series_Information: Series_Name: Geologic Atlas of Texas Issue_Identification: Laredo Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1976 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Bureau of Economic Geology (1976) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: Bureau of Economic Geology Title: Geologic Atlas of Texas, Crystal City-Eagle Pass Publication_Date: 1976 Series_Information: Series_Name: Geologic Atlas of Texas Issue_Identification: Crystal City-Eagle Pass Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1976 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Bureau of Economic Geology (1976) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: Bureau of Economic Geology Title: Geologic Atlas of Texas, Del Rio Publication_Date: 1977 Series_Information: Series_Name: Geologic Atlas of Texas Issue_Identification: Del Rio Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1977 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Bureau of Economic Geology (1977) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: Bureau of Economic Geology Title: Energy Resources of Texas Publication_Date: 1981 Series_Information: Series_Name: none Issue_Identification: none Source_Scale_Denominator: 1000000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1981 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Bureau of Economic Geology (1981) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: Bureau of Economic Geology Title: Mineral Resources of Texas Publication_Date: 1987 Series_Information: Series_Name: none Issue_Identification: none Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1987 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Bureau of Economic Geology (1987) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: Bureau of Economic Geology Title: Aquifers of Texas Publication_Date: 2001 Series_Information: Series_Name: none Issue_Identification: none Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2001 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Bureau of Economic Geology (2001) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: Carrasco, B.S. Originator: Escobedo, E.O. Originator: Rodriguez, L.M. Originator: Monreal, J.C.H. Title: Carta geologico-minera de Piedras Negras H14-10, Coahuila y Nuevo Leon Publication_Date: 2003 Series_Information: Series_Name: Servicio Geológico Mexicano Issue_Identification: H14-10 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2003 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Carrasco and others (2003) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: Ewing, T.E. Title: The Tectonic Framework of Texas; text to accompany The Tectonic Map of Texas Publication_Date: 1991 Series_Information: Series_Name: none Issue_Identification: none Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1991 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Ewing (1991) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: Gutiérrez, J.G. Originator: Ramirez, J.R.R. Originator: Osorio, J.N.A. Originator: Reynosa, O.V. Title: Carta geologico-minera de Nuevo Laredo G14-2, Tamaulipas and Coahuila, Mexico Publication_Date: 2004 Series_Information: Series_Name: Servicio Geológico Mexicano Issue_Identification: G14-2 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2004 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Gutiérrez and others (2004) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: Humphrey, W.E. Originator: Díaz, T. Title: Jurassic and Lower Cretaceous stratigraphy and tectonics of northeast Mexico Publication_Date: 2003 Series_Information: Series_Name: Bureau of Economic Geology Issue_Identification: Report of Investigations No. 267 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2003 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Humphrey and Díaz (2003) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: Iriondo, Alexander Originator: Kunk, M.J. Originator: Winick, J.A. Originator: CRM Title: 40Ar/39Ar dating studies of minerals and rocks in various areas in Mexico Publication_Date: 2004 Series_Information: Series_Name: USGS.CRM scientific collaboration (Part II): U.S Geological Survey Open-File Report Issue_Identification: 04-1444 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2004 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Iriondo and others (2004) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: Martínez, C.E. Originator: Rocha, M. Originator: García, R.R.C. Originator: Jiménez, R.B. Title: Carta geologico-minera de Ciudad Acuña H14-7, Coahuila y Nuevo Leon Publication_Date: 2003 Series_Information: Series_Name: Servicio Geológico Mexicano Issue_Identification: H14-7 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2003 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Martínez and others (2003) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: Miggins, D.P. Originator: Blome, C.D. Originator: Smith, D.V. Title: Preliminary 40Ar/39Ar geochronology of igneous intrusions from Uvalde County, Texas Publication_Date: 2004 Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 2004-1031 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2004 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Miggins and others (2004) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: Moore, D.W. Title: Geohydrologic mapping of the Edwards aquifer recharge zone in Kinney and Medina Counties, south central Texas [abs.] Publication_Date: 2007 Series_Information: Series_Name: Geological Society of America Abstracts with Programs Issue_Identification: v. 39, no. 6 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2007 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Moore (2007) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: Moore, D.W. Originator: Wermund, E.G., Jr. Originator: Richmond, G.M. Title: Quaternary geologic map of the Monterrey 4 x 6 quadrangle, United States, Quaternary Geologic Atlas of the United States Publication_Date: 1993 Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map Issue_Identification: I-1420 (NG-14). Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1993 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Moore and others (1993) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: Moore, D.W. Originator: Wermund, E.G., Jr. Originator: Richmond, G.M. Originator: Coe Christiansen, A. Title: Quaternary geologic map of the Austin 4o x 6o quadrangle, United States, Quaternary Geologic Atlas of the United States Publication_Date: 1993 Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map Issue_Identification: I-1420 (NG-14). Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1993 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Moore and others (1993) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: Papoulias, D. Originator: Parcher, J.W. Originator: Stefanov, J. Originator: Page, W.R. Title: Interdisciplinary science in support of environmental health along the United States-Mexico border Publication_Date: 2006 Series_Information: Series_Name: U.S. Geological Survey Fact Sheet Issue_Identification: 2006-3054 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2006 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Papoulias and others (2006) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: Rodriguez, L.M. Originator: Miranda, A. Originator: Perez, M.A. Originator: Romero, I. Originator: Sanchez, E. Title: Carta geologico-minera de Nueva Rosita G14-1, Coahuila y Nuevo Leon, Mexico Publication_Date: 2000 Series_Information: Series_Name: Servicio Geológico Mexicano Issue_Identification: G14-1 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2000 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Rodriguez and others (2000) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: Texas Water Development Board Title: Groundwater availability model for the southern Carrizo-Wilcox aquifer Publication_Date: 2003 Series_Information: Series_Name: Texas Water Development Board Final Report Issue_Identification: January 31, 2003 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2003 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Texas Water Development Board (2003) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Title: Assessment of undiscovered oil and gas resources of the Burgos basin province, northeastern Mexico Publication_Date: 2004 Series_Information: Series_Name: U.S. Geological Survey Fact Sheet Issue_Identification: 2004-3007 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2004 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: U.S. Geological Survey (2004) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: Warwick, P.D. Originator: Aubourg, C.E. Originator: Hook, R.W. Originator: SanFilipo, J.R. Title: Geology and Land Use in the western part of the Gulf Coast coal-bearing region Publication_Date: 2002 Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Maps Issue_Identification: MM41 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2002 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Warwick and others (2002) Source_Contribution: geologic interpretation Source_Information: Source_Citation: Citation_Information: Originator: Wittke, J.H. Originator: Lawrence, L.E. Title: OIB-like mantle source for continental alkaline rocks of the Balcones Province: trace-element and isotopic evidence Publication_Date: 1993 Series_Information: Series_Name: Journal of Geology Issue_Identification: v. 101 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1993 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Wittke and Lawrence (1993) Source_Contribution: geologic interpretation 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: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000100 Ordinate_Resolution: 0.000100 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.400000 Denominator_of_Flattening_Ratio: 294.978698 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: Feature classes and shapefiles included in this dataset: laredo_fld - folds laredo_arc_geo - geologic contacts, faults and other linear features laredo_label_geo - polygon unit point labels laredo_poly_geo - geologic units and other polygon features laredo_pnt - geologic bedding, wells, and other point features us_flts - normal faults within the U.S. LABEL-rock unit symbol DESCRIPTION-brief description and age of rock unit LABEL DESCRIPTION Jlc La Casita Formation (Upper Jurassic) Jol Olvida Formation (Upper Jurassic) Ka Aurora Formation (Lower Cretaceous) Kac Anacacho Limestone (Upper Cretaceous) Kau Austin Chalk (Upper Cretaceous) Kbd Buda Limestone and Del Rio Clay, undivided (Upper Cretaceous) Kbo Boquillas Formation (Upper Cretaceous) Kbv Barril Viejo Formation (Lower Cretaceous) Kcu Cupido Formation (Lower Cretaceous) Kdvr Devils River Limestone (Lower Cretaceous) Ked Edwards Limestone, undivided (Lower Cretaceous) Kef Eagle Ford Group (Upper Cretaceous) Kes Escondito Formation (Upper Cretaceous) Kgr Glen Rose Formation (Lower Cretaceous) Kig Late Cretaceous igneous rocks Kki Kiamichi Formation (Lower Cretaceous) Klm La Mula Formation (Lower Cretaceous) Klp La Pena Formation (Lower Cretaceous) Klv La Virgen Formation (Lower Cretaceous) Km Mendez Shale (Upper Cretaceous) Kme Menchaca Formation (Lower Cretaceous) Kmk McKnight Formation (Lower Cretaceous) Knm Navarro Group and Marlbrook Marl, undivided (Upper Cretaceous) Kol Olmos Formation (Upper Cretaceous) Kpa Padilla Limestone (Lower Cretaceous) Kpg Pecan Gap Chalk (Upper Cretaceous) Ks San Marcos Formation (Lower Cretaceous) Ksa Salmon Peak Limestone (Lower Cretaceous) Ksm San Miguel Formation (Upper Cretaceous) Kta Taraises Formation (Lower Cretaceous) Kup Upson Clay (Upper Cretaceous) Kwa Washita Group, undivided (Upper and Lower Cretaceous) Kwn West Nueces Formation (Lower Cretaceous) QTb Pleistocene and Pliocene basalt QTg Quaternary and Tertiary gravel, undivided (Holocene to Pliocene) QTu Uvalde Gravel (Pleistocene or Pliocene) Qa Modern alluvium (Holocene) Qal Alluvium, undivided (Holocene and Pleistocene) Qbe Beaumont Formation (Pleistocene) Qcd Clay to sand dunes (Holocene) Qds Stabilized sand dunes (Holocene) Ql Lissie Formation (Pleistocene) Qla Lacustrine deposits (Holocene) Qs Sand sheet (Holocene) Qsd Active dunes (Holocene) Qsi Silt sheet (Holocene) Qtr Travertine deposits (Pleistocene) Tb Bigford Formation (Eocene) Tc Carrizo Sand (Eocene) Tcm Cook Mountain Formation (Eocene) Tcv Catahoula (Miocene and Oligocene) and Frio, and Vicksburg (Oligocene) Formations, undivided Tep El Pico Clay (Eocene) Tfo Fleming Formation and Oakville Sandstone, undivided (Miocene) Tg Goliad Formation (Pliocene) Ti Tertiary igneous rocks (Eocene) Tj Jackson Group, undivided (Eocene) Tla Laredo Formation (Eocene) Tm Midway Group, undivided (Paleocene) Tqc Queen City Sand (Eocene) Tr Reklaw Formation (Eocene) Ts Sparta Sand (Eocene) Tw Wilcox Group, undivided (Eocene) Twe Weches Formation (Eocene) Ty Yegua Formation (Eocene) w Water DESCRIPTION-brief description of linear feature DESCRIPTION contact-certain facies boundary fracture map boundary normal fault-certain normal fault-concealed reverse or thrust fault-approximately located reverse or thrust fault-certain shoreline strike-slip fault, left lateral-certain strike-slip fault, left lateral-concealed strike-slip fault, right lateral-certain strike-slip fault, right lateral-concealed DESCRIPTION-brief description of point feature TYPE-mine type DESCRIPTION Active Mine Gas Well Inactive Mine Inactive Smelter Inclined Bedding-Showing Strike and Dip Lava Flow Direction Oil Well Oil/Gas Well Plugged Gas Well Plugged Oil Well Plugged Oil/Gas Well Powerplant Prospect/Occurence Shut-In (Gas) Shut-In (Oil) TYPE Antimony Barite Chlorite Coal Flourite Gas Lead-Zinc Magnesium Manganese Phosphate Uranium Zeolite DESCRIPTION-brief description of fold type DESCRIPTION anticline-certain anticline-concealed inverted anticline-certain inverted anticline-concealed overturned anticline-certain overturned anticline-concealed plunging anticline-certain plunging syncline-certain syncline-certain syncline-approximately located syncline-concealed DESCRIPTION-brief description of fault type DESCRIPTION normal fault-certain 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: Enterprise Publishing Network Address: Box 25046 Address: Denver Federal Center, MS-902 City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: 303.236.5486 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 these digital spatial data have been subjected to rigorous review and are substantially complete, they are released on the condition that neither the USGS nor the United States Governmnet may be held liable for any damage resulting from their authorized or unauthorized use. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ArcGIS-Geodatabase File_Decompression_Technique: GZIP compressed TAR file (Unix), ZIP archive (Windows) Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2009/1015 Network_Resource_Name: http://borderhealth.cr.usgs.gov/ Fees: none Metadata_Reference_Information: Metadata_Date: 20081124 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Paco VanSistine Contact_Organization: U.S. Geological Survey Contact_Position: Geographer Contact_Address: Address_Type: mailing address Address: Denver Federal Center Address: MS 980 City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-5452 Contact_Electronic_Mail_Address: dsistine@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata ("CSDGM version 2") Metadata_Standard_Version: FGDC-STD-001-1998