Lithology and aggregate quality attributes for the digital geologic map of Colorado
Open-File Report
99-29
By: Daniel H. Knepper, Gregory N. Green, and William H. Langer
Links
- More information: USGS Index Page (html)
- Document: Report (142 kB pdf)
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Abstract
This geologic map was prepared as a part of a study of digital
methods and techniques as applied to complex geologic maps. The
geologic map was digitized from the original scribe sheets used to
prepare the published Geologic Map of Colorado (Tweto 1979).
Consequently the digital version is at 1:500,000 scale using the
Lambert Conformal Conic map projection parameters of the state base
map. Stable base contact prints of the scribe sheets were scanned on
a Tektronix 4991 digital scanner. The scanner automatically converts
the scanned image to an ASCII vector format. These vectors were
transferred to a VAX minicomputer, where they were then loaded into
ARC/INFO. Each vector and polygon was given attributes derived from
the original 1979 geologic map.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Lithology and aggregate quality attributes for the digital geologic map of Colorado |
| Series title | Open-File Report |
| Series number | 99-29 |
| DOI | 10.3133/ofr9929 |
| Year Published | 1999 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | Central Mineral and Environmental Resources Science Center |
| Description | HTML Document; Report: 22 p. |
| Country | United States |
| State | Colorado |
| Google Analytic Metrics | Metrics page |