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Maps by Helen L. Foster and Harold G. May, 1957
These maps, produced in Tokyo after a two-year geological survey of Ishigaki Island, precisely depict its Ryukyu limestone formations and volcanic features, fossils and soils, with field assistance from Setsuko Yamazato.
GEOLOGIC MAP OF ISHIGAKI-SHIMA, RYUKYU-RETTO
Geology by Helen L. Foster and Harold G. May, 1957
ACTUAL VEGETATION MAP
Geology by Helen L. Foster and Harold G. May, 1957
SOILS MAP
Geology by Helen L. Foster and Harold G. May, 1957
SOUNDING IN FATHOMS
Geology by Helen L. Foster and Harold G. May, 1957
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