USGS Open-File Report 2004-1229B

Bankey, Viki, Grauch, V.J.S., and Fugro Airborne Surveys Corporation, 2004

Digital aeromagnetic data and derivative products from a helicopter survey
over the town of Blanca and surrounding areas, Alamosa and Costilla 
Counties, Colorado

This CD-ROM contains digital data, image files, and text files describing
data formats and survey procedures for aeromagnetic data collected during 
a helicopter geophysical survey in southern Colorado during October, 2003.  
The survey covers the town of Blanca and surrounding communities in Alamosa 
and Costilla Counties.

The digital files include grids, images, ARC/INFO, ARC/VIEW, and Geosoft 
compatible files, and flight-line data.  

The data files and information about their formats and use are 
organized into four folders (directories) as follows.  Files pertaining 
to this report are contained in the "report" folder; files pertaining to 
the gridded data 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 the data folders, 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 must have an Adobe Acrobat reader, version 3 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.