The polygons are to be used for estimating where a certain deposit type might be found. The polygons are based on the state of knowledge in the mid 1990's and should not be used for any purposes other than indicating where one type of mineralization might occur. Initial lines were hand drawn with grease pencil on mylar overlay of geologic map of Forest in mid 1990's. Some modifications of polygons and attributes were done in 1997 to produce the final coverages. No changes planned.
All lines are approximations at that scale.
Acknowledgement of U.S. Geological Survey would be appreciated in products derived form these data. Attribute accuracy is described, where present, with each attribute defined in the Entity and Attribute Section. Polygon and chain-node topology present. Code refers to lookup table that has name of deposit model.