U.S. Geological Survey 2006 vector digital data Scientific Investigations Report 2006-5129 Reston, VA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?sir-06-5129_alt_bottom_trinidad_con Watts, K.R. 2006 document Scientific Investigations Report 2006-5129 Reston, VA U.S. Geological Survey http://pubs.usgs.gov/sir/2006/5129/ This data set consists of structure contours that show lines of equal altitude of the bottom of the Trinidad Sandstone, the contact between the Trinidad Sandstone and Pierre Shale, in Las Animas County, Colorado. The U.S. Geological Survey developed this data set as part of a cooperative project with the Colorado Water Conservation Board. This data set was created to display the generalized configuration and altitude of the bottom of the Trinidad Sandstone in Las Animas County, Colorado. 2006 publication date Complete None planned -105.103476 -104.236392 37.425212 36.992133 ISO 19115 Topic Category inlandWaters geoscientificInformation Geographic Names Information System (GNIS) Las Animas County Colorado Geologic Names Lexicon (GEOLEX) Trinidad Sandstone Pierre Shale None This data set was prepared at a map scale of 1:400,000. U.S. Geological Survey Ask USGS -- Water Webserver Team mailing address

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Reston VA 20192 USA 1-888-275-8747 (1-888-ASK-USGS) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+sir-06-5129_alt_bottom_trinidad_con Compilation of this data set and associated metadata was done in cooperation with the Colorado Water Conservation Board. Technical review of this data set and metadata was provided by Steve Char of the U.S. Geological Survey. Public Unclassified None Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722 U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_alt_top_raton_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_alt_top_trinidad_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_alt_top_vermejo_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_alt_water_table_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_cogcc_production_point U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_cogcc_wells_point U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_depth_bottom_trinidad_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_depth_top_raton_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_depth_top_trinidad_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_depth_top_vermejo_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_depth_water_table_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_formation_tops_point U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_seo_wells_point U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_thickness_raton_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_thickness_trinidad_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_thickness_vermejo_con Johnson, R.B. 1969 document U.S. Geological Survey Miscellaneous Investigations Series Map I-558, scale 1:250,000, reprinted in 1983 http://pubs.er.usgs.gov/usgspubs/i/i558 Green, G.N. 1992 vector digital data U.S. Geological Survey Open-File Report 92-507 Part A. Documentation Part B. Common files Part C. Explanation sheet database Part D-O. Geospatial data in ARC/INFO format http://pubs.usgs.gov/of/1992/ofr-92-0507/ Contour lines were visually inspected for topological errors (crossing or touching contours). No errors were detected. Includes only contours within the Raton Basin, Las Animas County, Colorado. Contours less than 1,600 meters long, were deleted. Contours not well supported by data were deleted. U.S. Geological Survey 1969 document Miscellaneous Geologic Investigations Map I-558 Washington D.C. U.S. Geological Survey 250000 paper 1969 publication date Johnson (1969) Location and altitude of contact of the bottom of the Trinidad Sandstone with the top of the Pierre Shale The shapefiles, sir-06-5129_alt_top_trinidad_con.shp and sir-06-5129_thickness_trinidad_con.shp, were converted to coverages, using the ESRI ArcGIS ArcMap Conversion Tools Feature Class To Coverage command. 20060313 The ESRI ArcGIS ArcInfo workstation command Topogridtool was used to create raster data for the altitude of the top of the Trinidad Sandstone and for the thickness of the Trinidad Sandstone. 20060313 The ESRI ArcGIS ArcInfo Spatial Analyst Extension Math command Minus was used to calculate raster data for the altitude of the bottom of the Trinidad Sandstone, by subtracting the raster data for thickness of the Trinidad Sandstone from raster data for altitude of the top of the Trinidad Sandstone. 20060313 Contours were generated from the raster data, using the ESRI ArcGIS ArcMap, Spatial Analyst Tools, Surface function, Contour. 20060313 Contours were clipped to the study area to coincide with the data points used to create the raster data of the altitude of the top of the Trinidad Sandstone. 20060313 The contour lines were exported to a coverage and edited using the ArcEdit module of ESRI ArcGIS ArcInfo Workstation. Editing consisted of deleting small closed contours and contours not supported by nearby data points, and manually reshaping contours. 20060313 The edited coverage was exported to a shapefile and the contours were smoothed, using the ESRI ArcGIS Data Management Tools, Smooth function. 20060313 A line-style (solid or dashed) attribute was added to the arcs based on distance from control points. The line-style was defined as solid when the arc was within 2,400 meters of a control point and dashed when more than 2,400 meters from a control point. 20060313 Vector String 76 Albers Conical Equal Area 37.500000 40.500000 -105.500000 37.000000 0.000000 0.000000 coordinate pair 0.000128 0.000128 meters North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 North American Vertical Datum of 1988 100 feet Attribute values sir-06-5129_alt_bottom_trinidad_con Altitude of the bottom of the Trinidad Sandstone U.S. Geological Survey Scientific Investigations Report 2006-5129 FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. CONTOUR Line of equal altitude NAVD 1988, evenly divisible by 200 USGS 4800 8800 feet, North American Vertical Datum 1988 (NAVD 88) line Contour style (solid or dashed) USGS soli Solid line, indicating contours are well supported by data USGS dash Dashed line, indicating that contours are approximately located and poorly supported by data USGS index Contour type (index or intermediate) USGS 0 Intermediate contour USGS 1 Index contour, every fifth contour, evenly divisible by 1,000 USGS U.S. Geological Survey Ask USGS -- Water Webserver Team mailing address

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Reston VA 20192 USA 1-888-275-8747 (1-888-ASK-USGS) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+sir-06-5129_alt_bottom_trinidad_con Downloadable Data Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data, software, or related materials. The use of firm, trade, or brand names in this report is for identification purposes only and does not constitute endorsement by the U.S. Geological Survey. The names mentioned in this document may be trademarks or registered trademarks of their respective trademark owners. shape file winzip 51 kb http://water.usgs.gov/GIS/dsdl/SIR-06-5129_alt_bottom_trinidad_con.zip None. This dataset is provided by USGS as a public service. 20061103 20060922 U.S. Geological Survey Ask USGS -- Water Webserver Team mailing address

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Reston VA 20192 USA 1-888-275-8747 (1-888-ASK-USGS) http://water.usgs.gov/user_feedback_form.html FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time None. Although this Federal Geographic Data Committee (FGDC) compliant metadata file is intended to document the data set in nonproprietary form, as well as Environmental Systems Research, Inc. (ESRI) ArcGIS format, this metadata file may include some ArcGIS-specific terminology. These data are not intended to be used as a survey product and are for reference purposes only. Acknowledgment of the U.S. Geological Survey and the Colorado Water Conservation Board would be appreciated in products derived from these data. Public Unclassified None http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile