Conversion of geologic quadrangle maps to geologic coverages
Open-File Report
94-359
By: Joseph F. Connell, William R. Barron, and Reavis L. Mitchell
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Abstract
Three hundred sixty-eight geologic map$ of 7-1/2 minute quadrangles in Tennessee were coverted to geographic information system (GIS) coverages. The procedure used was documented and a list was made of the quadrangles included in the coverages. Maps were converted to GIS coverages by making film copies of scribecoats of the maps. The film copies were scanned, vectorized, and written into a generate format. Coverage polygons were tagged with symbels to identify geologic units, and coverage lines were tagged with line types to designate stratigraphic contacts.
Suggested Citation
Connell, J.F., Barron, W.R., Mitchell, R., 1994, Conversion of geologic quadrangle maps to geologic coverages: U.S. Geological Survey Open-File Report 94-359, iii, 23 p. :ill., map ;28 cm., https://doi.org/10.3133/ofr94359.
ISSN: 2331-1258 (online)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Conversion of geologic quadrangle maps to geologic coverages |
| Series title | Open-File Report |
| Series number | 94-359 |
| DOI | 10.3133/ofr94359 |
| Year Published | 1994 |
| Language | ENGLISH |
| Publisher | U.S. Geological Survey ; USGS Earth Science Information Center, Open-File Reports Section [distributor], |
| Description | iii, 23 p. :ill., map ;28 cm. |