NOTE: This file contains transcribers notes to accompany the original README file (using_database.pdf).

This data is a conversion product and should not serve as the primary source for the complete geologic information for this area. To obtain complete information, please go to https://pubs.usgs.gov/mf/2003/2428/.  This information may be found as referenced below:

Publisher:	U.S. Geological Survey	
Title:		Maps showing sedimentary basins, surface thermal maturity, and indications of petroleum in the Central Alaska Province
Author:		Troutman, S.M., and Stanley, R.G.
Original NGMDB identifier: 63033


Purpose: This file set is intended to make outdated Arc/INFO e00 files available as open-format shapefiles. No modification to files has been made. Projection was not changed. 

Process: e00 files were imported to coverage, then converted to shapefile using the USGS EGIS toolbox commands “Import from e00 (conversion)”, then "ArcInfo Coverage to File GDB (conversion)". Coverages were then converted using ESRI “Feature Class to Shapefile”. Related tables were preserved by using the EGIS toolbox "Convert ArcInfo Table".

E00 files convert to:
	iop.e00 (indications of petroleum within the central Alaska province boundaries) =
		iop_point.shp
	faults.e00 (major faults and geologic structures in Alaska) =
		faults_arc.shp
	seds_basins.e00 (Sedimentary basins in Alaska) =
		seds_basins_arc.shp
		seds_basins_poly.shp


Original files included:
	using_database.pdf = readme
	iop_metadata.txt = metadata
	faults_metadata.txt = metadata
	seds_basins_metadata.txt = metadata


Modified: 9 May, 2024 by Karen Morgan, USGS contractor 



