Summary.—Rapid geological map-making in unsurveyed country has been accomplished by using a plane table, open-sight alidade, and range-finder.
Introduction.—The need for a geological survey of a large area of southwestern
Persia in the 1930’s presented unusual problems to the geologists concerned. About 100,000 square miles of mountainous country had to be covered, of which there was no reliable map. Eddies and flurries of tribal strife ruled out the possibility of a topographical survey being conducted in advance of an in preparation for the geologists who had therefore to evolve a workable method for themselves of producing serviceable topographical...
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