Northeastern Section (39th Annual) and Southeastern Section (53rd Annual) Joint Meeting (March 25–27, 2004)
Paper No. 14-22
Presentation Time: 8:00 AM-12:00 PM

GEOLOGIC MAP DISTRIBUTION VIA INTERNET AT THE NORTH CAROLINA GEOLOGICAL SURVEY

REID, Jeffrey C., North Carolina Geological Survey, 1612 Mail Service Center, Raleigh, NC 27699-1612, jeff.reid@ncmail.net and AXON, Allan G., GIS Unit, Department of Environment and Natural Resources, Information Technology Services, 1608 Mail Service Center, Raleigh, NC 27699-1608

The North Carolina Geological Survey (NCGS) is now distributing scanned and georeferenced geologic maps via the Internet at (http://www.geology.enr.state.nc.us)=> “What’s New!”=> “Scanned Geologic Maps.” The goal is to encourage the use of published geologic maps by making the maps more readily available to clients. Georeferencing the maps encourages the use of geologic information within geographic information systems (GIS).

The 7.5-minute, county, and other geologic maps (including the 1985 Geologic Map of North Carolina) that appear on this site were scanned at 300 dpi from published geologic maps primarily from NCGS publications. The resulting .tiff files were subsequently compressed using Mr. Sid® software. These images were georegistered using ArcMap® version 8.2. The Corpscon coordinate conversion software was used to determine NC State Plane coordinates that were used by ArcMap® to produce "world files" needed to display the georeferenced images using GIS software. Users may download all or part of a geologic map with accompanying world files.

Planned additions include geologic maps from theses and dissertations, federal publications, and current NCGS 1:24,000-scale geologic mapping from the STATEMAP program. Maps listed are also contributed to the U.S. Geological Survey’s (USGS) National Geologic Map Database, and the USGS National Geologic Map Image Library.

Northeastern Section (39th Annual) and Southeastern Section (53rd Annual) Joint Meeting (March 25–27, 2004)
General Information for this Meeting
Session No. 14--Booth# 60
The Value of Geologic Maps for Land and Water Resource Management—Examples from National Cooperative Geologic Mapping Program (FEDMAP, STATEMAP, and EDMAP) (Posters)
Hilton McLean Tysons Corner: Ballrooms A and B
8:00 AM-12:00 PM, Thursday, March 25, 2004

Geological Society of America Abstracts with Programs, Vol. 36, No. 2, p. 60

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