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Geologic Mapping: Future Needs
The associations, the size of their U.S. resident, non-student membership (as of 1983), and the general topical interest(s) of their members as it relates to geoscience maps are listed below. Only those members who are U.S. residents and nonstudents were included in the population from which the sample was drawn. A sample representing 3 percent of the population was drawn by selecting the thirty-third name and multiples thereof from each of the membership lists. If the name selected on a given membership list had already been selected from a previous list, the next name on that list was selected.
American Association of Petroleum Geologists
24,133
All aspects of the geologic sciences related to the petroleum industry
Association of Engineering Geologists
2,233
Engineering geology
American Institute of Certified Planners
4,667
Applied geology (geoscience) as it relates to urban and regional planning
American Water Resources Association
1,933
Primarily applied groundwater
Geological Society of America
9,800
All aspects of the geologic sciences, especially basic research
Society of Exploration Geophysicists
10,500
Applied geophysics, largely related to the petroleum industry
Society of Economic Geologists
1,700
Geology related to mineral deposits and mineral exploration
Society of Economic Paleontologists and Mineralogists
3,967
Primarily basic problems in stratigraphy and paleontology
Society of Mining Engineers
19,000
Engineers and geologists engaged in work related to mining and the mineral industry
TOTAL
77,933
The decision on the sample size was based upon the desire for a response accuracy on the order of 3 percent in estimating proportions for the entire population at the 95 percent confidence level. Such a response accuracy would require a return of approximately 1100 forms. Assuming a response rate of 50 percent, about 2200 forms would have to be distributed. A total of 2388 questionnaires
