2010 Petroleum Resource Assessment of the National Petroleum Reserve in Alaska: GIS Play Maps

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Topological accuracy was tested using topology validation tools via ArcGIS 10. Specific errors that were checked included: Polygon overlaps and gaps, coincident contact lines and geologic unit borders, self-overlapping lines and superfluous pseudo nodes. No duplicate features exist nor duplicate points in a data string. Intersecting lines are separated into individual line segments at the point of intersection. Feature classes in the geodatabase are topologically clean.

Data set complete. No data was intentionally omitted from the hard copy source map.

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