README FILE This CD-ROM contains U.S. Geological Survey Open-File Report 02-101 in PDF file format, data files, and software to install Adobe Acrobat Reader. The PDF files are readable with Adobe Acrobat Reader version 4 or higher. ===================================== 1. CD-ROM ORGANIZATION AND CONTENTS ===================================== The following files and directories are contained in the root directory of this CD-ROM. readme.txt - this readme file ofr-02-101.pdf - main report PDF file rp505enu.exe - Acrobat Reader installer LINE_DATA - directory of data files ----------------- 616a.xyz - original Dighem data file 616a.title - text description of channels in 616a.xyz file 616a_cor.xyz - corrected data file. Format = (i10,3f10.1,i10,11f10.1) 616a_cor.title - text description of channels in 616a_cor.xyz file GRIDS - directory of grid files in grid exchange format (gxf) ----------------- 56k_hcp_616a.gxf - apparent resistivity grid at 56 kHz coplanar 7200_hcp_616a.gxf - apparent resistivity grid at 7200 Hz coplanar 900_hcp_616a.gxf - apparent resistivity grid at 900 Hz coplanar IMAGES - directory of apparent resistivity images in jpg format ----------------- 56k_hcp_616a.jpg - JPEG image of apparent resistivity grid at 56 kHz coplanar 7200_hcp_616a.jpg - JPEG image of apparent resistivity grid at 7200 Hz coplanar 900_hcp_616a.jpg - JPEG image of apparent resistivity grid at 900 Hz coplanar 56k_hcp_616a.PDF - PDF file of 56 kHz coplanar apparent resistivity grid image 7200_hcp_616a.PDF - PDF file of 7200 Hz coplanar apparent resistivity grid image 900_hcp_616a.PDF - PDF file of 900Hz coplanar apparent resistivity grid image ===================================== 2. OPENING THE REPORT ===================================== To open the report after Adobe Acrobat Reader is installed, double click on the report icon ofr-02-101.pdf.