Identification_Information: Citation: Citation_Information: Originator: Michael P. Pantea Originator: James C. Cole Originator: Bruce D. Smith Originator: Jason R. Faith Originator: Charles D. Blome Originator: David V. Smith Publication_Date: 2008 Title: Three-Dimensional Geologic Model of Complex Fault Structures in the Upper Seco Creek Area, Medina and Uvalde Counties, South-Central Texas Edition: Version 1.0 Geospatial_Data_Presentation_Form: model Series_Information: Series_Name: USGS Scientific Investigations Report Issue_Identification: 2008-5131 Publication_Information: Publication_Place: Denver Colorado Publisher: US Geological Survey Online_Linkage: http://pubs.usgs.gov/sir/2008/5131 Abstract: This multimedia report shows and describes digital three-dimensional faulted geologic surfaces and volumes of the lithologic units of the Edwards aquifer in the upper Seco Creek area of Medina and Uvalde Counties in south-central Texas. This geologic framework model was produced using: (1) geologic maps and interpretations of depositional environments and paleogeography, (2) lithologic descriptions, interpretations, and geophysical logs from 31 drill holes, (3) rock core and detailed lithologic descriptions from one drill hole, (4) helicopter electromagnetic geophysical data, (5) and known major and minor faults in the study area. These faults were used because of their individual and collective effects on the continuity of the aquifer-forming units in the Edwards Group. Data and information were compared and validated with each other and reflect the complex relationships of structures in the Seco Creek area of the Balcones fault zone. This geologic framework model can be used as a tool to visually explore and study geologic structures within the Seco Creek area of the Balcones fault zone and show the connectivity of hydrologic units of high and low permeability between and across faults. The software can be used to display other data and information, such as drill-hole data, on this geologic framework model in three-dimensional space. Supplemental_Information: Includes data sets used to create the model. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2008 Currentness_Reference: Publication date Status: Progress: in progress Maintenance_and_Update_Frequency: none planned Spatial_Domain: Bounding_Coordinates: East_Bounding_Coordinate:-99.25 West_Bounding_Coordinate:-99.5 North_Bounding_Coordinate:29.375 South_Bounding_Coordinate:29.625 Keywords: Theme: Theme_Keyword_Thesaurus: American Geological Institute Glossary of Geology Theme_Keyword: Three Dimensional model Theme_Keyword: earth Vision Theme_Keyword: 3-D Theme_Keyword: Hydrostratigraphic Units Theme_Keyword: Edwards Aquifer Theme_Keyword: Edwards Group Theme_Keyword: Balcones Fault Theme_Keyword: Balcones Fault Escarpment Theme_Keyword: Del Rio Clay Theme_Keyword: Buda Limestone Theme_Keyword: Eagle Ford Formation Theme_Keyword: Devils River Formation Theme_Keyword: Austin group Theme_Keyword: Austin Chalk Theme_Keyword: Anacacho Limestone Theme_Keyword: Mafic Intrusive Theme_Keyword: Helicopter Eledtromagnetic Survey Theme_Keyword: HEM Theme_Keyword: Georgetown Formation Theme_Keyword: Upper Member of the Glen Rose Limestone Theme_Keyword: Glen Rose Limestone Theme_Keyword: Lower Cretaceous Place: Place_Keyword_Thesaurus: Board on Geographic Names Place_Keyword: Texas Place_Keyword: Medina County Place_Keyword: Uvalde County Access_Constraints: none Use_Constraints: None Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Michael P. Pantea Contact_Organization: US Geological Survey Contact_Address: Address_Type: Mailing Address Address: PO Box 25046, MS 980, Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Contact_Voice_Telephone: 303-236-5554 Contact_Electronic_Mail_Address: mpantea@usgs.gov Data_Set_Credit: San Antonio, Texas, office of the US Geological Survey provided source data Data_Quality_Information: Logical_Consistency_Report: Data is logically consistent Completeness_Report: Data set was used to create the model, and is complete Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Well locations based on GPS and / or State of Texas location information Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Well locations based on GPS and / or State of Texas location information Lineage: Process_Step: Process_Description: Model created 2005-6 using Earth Vision software, version 7.5 Process_Date: 2008 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 14 Transverse_Mercator: Scale_Factor_at_Central_Meridian: .9996 Longitude_of_Central_Meridian: -99.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000.0 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: Coordinate pair Coordinate_Representation: Abscissa_Resolution: 20 Ordinate_Resolution: 20 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: NAD 27 Ellipsoid_Name: Clark 1866 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 294.98 Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: US Geological Survey Contact_Address: Address_Type: Mailing Address Address: USGS Information Services, PO 25286, Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 888 ASK USGS Resource_Description: SIR 2008_XXXX Distribution_Liability: Neither the United States Government nor any agency thereof nor any of their employees makes any warranty, expressed or implied, or assumes any legal responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed at this web site or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Although these data have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and (or) the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data, software, or related materials. Although this program has been used by the USGS, no warranty, expressed or implied, is made by the USGS or the United States Government as to the accuracy and functioning of the program and related program materials, nor shall the fact of distribution constitute any such warranty, and no responsibility is assumed by the USGS in connection therewith. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, nor warranty, expressed or implied, is made regarding the display of utility of the data on any 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. EarthVision software is the intellectual property of Dynamic Graphics, Inc., and is used here with their permission. Other than those rights granted to the USGS and third parties to assist them in using this product (any venue), Dynamic Graphics, Inc., reserves all rights in their software. Any appearances of trade, product, or firm names, or private logos, in or on this product do not, and are not intended to, imply endorsement by the U.S. Government. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Executable and data files Digital_Transfer_Option: Offline_Option: Offline_Media: DVD-ROM Recording_Format: ISSO Fees: see http://ask.usgs.gov/prices/ Metadata_Reference_Information: Metadata_Date: 2004 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Michael P. Pantea Contact_Organization: US Geological Survey Contact_Address: Address_Type: Mailing Address Address: PO 25046, MS 980, Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-5554 Contact_Electronic_Mail_Address: mpantea@usgs.gov Metadata_Standard_Name: FGDC content standard for digital geospatial metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: none Metadata_Use_Constraints: none