USGS Open-File Report 2006-1170 Viki Bankey, V.J.S. Grauch, B.J. Drenth, and Geophex, Ltd. Digital data from the Questa-San Luis and Santa Fe East helicopter magnetic surveys in Santa Fe and Taos Counties, New Mexico, and Costilla County, Colorado. This report contains digital data files and descriptions of aeromagnetic data collected during an airborne geophysical survey in the east-central San Luis and southeastern Espaņola basin, New Mexico and Colorado, in 2005. The digital files include grids, images, and flight-line data. The data files and information about their formats and use are organized into three folders (directories) as follows. Files pertaining to this report are contained in the "report" folder; files pertaining to the gridded data and images are contained in the "grids" folder; files pertaining to the flight-line data are contained in the "linedata" folder; and files pertaining to the color shaded-relief images are contained in the "images" folder. In each folder, ASCII files with the extension "txt" describe the format and contents of the data files. Read the "txt" files before using the data files. To begin, read the file "report.pdf" in the "report" folder. This report lists and describes the files available in the other folders. To view this report, you need an Adobe Acrobat reader, version 6 or higher, which can be downloaded at no cost through http://www.adobe.com/. Next, open the report folder and double-click on the report.pdf icon to open the report. Refer to the built-in help system in Adobe Acrobat Reader for assistance with commands. Disclaimer This report has not been reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature. This publication is prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, 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 all data and software are used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of 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, the software, or related materials. System Requirements MAC OS X Adobe Reader 7.0 Macintosh PowerPC G3, G4, G5 processor Mac OS X v.10.2.8 or higher 128 MB of RAM 80 MB of available hard disk space (110 MB required for the full version) 800 x 600 screen resolution Adobe Reader 6.0.x Macintosh G3 or faster processor Mac OS X v10.2.2 or higher 32 MB of RAM (64 MB recommended) 70 MB of available hard disk space 800 x 600 screen resolution WINDOWS Adobe Reader 7.0 MS Windows Pentium-class processor Windows XP Professional or Home Edition with SP1 or SP2, or Tablet PC Edition; Microsoft Windows 2000 with Service Pack 2 (SP2) 128 MB of RAM 90 MB of available hard-disk space for the full version 800 x 600 monitor resolution Adobe Reader 6.0 MS Windows Pentium-class processor Windows XP Professional, Home, or Tablet PC Edition; Windows Me; Windows 2000 Professional SP2; Windows NT Workstation 4.0 SP6; Windows 98 Second Edition 32 MB of RAM (64 MB recommended) 80 MB of available hard disk space 800 x 600 monitor resolution