by far the major sources of geoscience maps that actually reach the general user community, with federal sources relied upon one-half again as much as the state sources.
Respondents clearly indicated that full-color geologic maps are the most desirable geoscience map type. They indicated that for geologic maps a medium to large scale was most important (less than 1:62, 500).
The largest single element of the questionnaire dealt with determining, by geologic-physiographic province, the geoscience mapping needs for the current and future, and by region, what scale would be most needed. Of the 42 provinces the highest ranked is the Gulf Coastal Plain. Of the other top-10-ranked regions (see Table 14), six are in the Basin Range-Rocky Mountains, and three are in the Great Plains- Midcontinent. The geographic concentration of these provinces strongly reflects the influence of industry- employed respondents, particularly petroleum exploration, which represented 60 percent of the respondents. For the future, of the 10 most important provinces, the Gulf Coastal Plain dropped to third position; six of the top 10 are in the Basin Range-Rocky Mountain provinces; seventh and eighth are in the Midcontinent; and the Appalachian Fold and Thrust Belt was elevated to tenth position.
For planners, engineering geologists, geohydrologists, and those involved in hazard mitigation, the tectonically active Pacific Coastal area states ranked highest in future importance. Those involved chiefly in engineering ranked the southern Appalachian provinces as most important.
In comparison of current to future importance, respondents indicated an increase in importance for 38 of the 41 provinces, with only two provinces, the currently top-ranked Gulf Coastal Plain and the Southern Great Plains, showing decreases. Data suggest that geoscience mapping needs may have peaked for the Gulf Coastal Plain and may be approaching the peak for the Midcontinent. Seismic and other hazard-related problems undoubtedly account for the strong increase in the Western Cordillera region, in addition to other problems related to rapid population growth. The large increase in future map needs for the Basin Range-Rocky Mountain region may reflect a partial geographic shift in resource exploration and development. In terms of future needs the Alaskan provinces showed greater percentage increase needs than any other provinces, with percentage increases that range from 41 to 50. The offshore areas, with the exception of the Atlantic