Digital Map of Major Bedrock Lithologic Units for the Pacific Northwest: A Contribution to the Interior Columbia River Basin Ecosystem Management Project.

摘要

This report is one in a series of digital maps, data files, and reports generated by the U.S. Geological Survey (USGS) to provide geologic process and mineral resource information for the Interior Columbia Basin Ecosystem Management Project (ICBEMP), a U.S. Forest Service and Bureau of Land Management interagency project. The various digital maps and data files which were provided by the USGS, and which are available in this and other reports, are being used in a geographic information system (GIS)-based ecosystem assessment which includes a comprehensive analysis of past, present, and future ecosystem conditions within the general area of the Columbia River Basin east of the Cascade Mountains.