Open File Report 93-526.  The Generation of Raster-format Geologic Maps Using Digital Image-processing on the Macintosh Computer:  A tutorial guide, by Christopher D. Condit and Alex V. Acosta, 1993, 63 p. and two 3.5-in high density diskettes.

	This report is a 63-page tutorial guide (booklet) to the use of digital image processing on the Macintosh computer as a tool for map generation.  The procedures described will enable the reader to produce digital maps in raster (bit-mapped) format that are stored on disk.  Report includes 5 text files, 4 program files, 59 image files, 15 ASCII data files, and 18 CLUT files, all in self-extracting archives (SEAs) on two 1.4 MB (high density) diskettes.

Requirements to use the tutorial:  any Macintosh with an 8-bit (256) color monitor and 8 MB of RAM, a 20-MB hard disk, and Macintosh System 7.0.0 or higher.  A high density disk drive is needed to read the diskettes;  the tutorial guide (in MS Word 5.1 format) is included as one of the SEA text files.

To extract and place these files on your hard drive, select and open each self-extracting archive, and follow the prompts in the pop-up menus.