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| U.S. Geological Survey Open-File Report 2005-1194 |
Published 2005, Supersedes Open-File Report 85-256
By L. David Carter and John P. Galloway
With a section on The Digitally Revised Engineering Geologic Maps of Northern Alaska by David W. Houseknecht, Christopher P. Garrity, and Donald C. Meares
The northeastern part of the National Petroleum Reserve in Alaska (NPRA) has become an area of active petroleum exploration during the past five years. Recent leasing and exploration drilling in the NPRA requires the Bureau of Land Management (BLM) to manage and monitor a spectrum of surface activities that include seismic surveying, exploration drilling, oil-field development drilling, construction of oil-production facilities, and construction of pipelines and access roads. BLM must routinely evaluate a variety of permit applications, environmental impact studies, and other documents that require rapid compilation and analysis of data pertaining to surface and subsurface geology, hydrology, and biology. In addition, BLM must monitor these activities and assess the impacts of these activities to the natural environment. Timely and accurate completion of these land-management tasks requires information regarding the properties and areal distribution of unconsolidated geologic units that cover the surface of the area.
To support these land-management tasks, a 1:250,000 engineering geologic map of the Harrison Bay Quadrangle, Alaska (Carter and Galloway, 1985) has been digitized. This report includes a print file of the map and of the text that accompanied the original map (Carter and Galloway, 1985), as well as links to GIS files for the map. These digital geologic products provide a scientific foundation that can be integrated with other datasets to support decisions pertaining to surface activities in northeastern NPRA.
Complementary maps of a high-priority area within the Harrison Bay quadrangle also are being released (Mars and others, 2005). Those maps, published at a scale of 1:63,360, include a Digital Terrain Model based on 5-meter-resolution IFSAR (Interferometric Synthetic Aperture Radar) data, a surface classification map based on 30-meter-resolution Landsat 7 ETM+ data, and a shaded-relief surface-classification map (generated by fusing the IFSAR and ETM+ datasets).
Open-File Report 2005-1194 text [910-KB Adobe PDF file]
Open-File Report 2005-1194 Map Sheets [15.5-MB Adobe PDF file] (WARNING: Download this file to your computer completely before trying to open it. PC: right-click; Macintosh: control-click)
ArcGIS version 9.0 Geodatabase with associated files [35-MB zip volume]
For scientific questions or comments concerning this report, contact David W. Houseknecht.
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