Readme for U.S. Geological Survey Scientific Investigations Map 2824

Digital Data for Maps of Hawaiian Islands Exclusive Economic Zone Interpreted from GLORIA Sidedscan-Sonar Imagery

by Joel E. Robinson, Michael R. Hamer, Andrew J. Stevenson, Harry Lucky, Carolyn H. Degnan, Florence L. Wong, and Robin T. Holcomb

This digital database was compiled with ArcInfo version 7.2.1 and ArcGIS 9.0.  It consists of files containing geologic map data in ESRI shapefile format.  ArcInfo-compatible GIS software is therefore required to use the files of this database. The shapefiles are stored in a single zipped folder (SIM2824_data.zip) in this release for ease of transfer. The scale of the source map limits the spatial resolution (scale) of the database to 1:2,000,000. Available shapefiles are described below:

ArcInfo coverage         Description
or grid

  geo_poly.shp              geologic terrain polygons

  geo_arc.shp               geologic contacts and line features