. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. Figure 3. Members of the Tokyo office make a field visit. Mt. Alutom, Guam, 1952. Left to right: Harold May, Joshua I. Tracey (Guam party chief), Sherman K. Neuschel (Chief, Tokyo Office), and Frank C. Whitmore Iphief, Military Geology Branch).. properties of the surficial deposits of the island, making this study a useful precursor for later terrain analyses. A unifying factor in the program was the USGS tradition of geologic mapping—an art that is hard to reduce to the written word. It is taught in the field
. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. Figure 3. Members of the Tokyo office make a field visit. Mt. Alutom, Guam, 1952. Left to right: Harold May, Joshua I. Tracey (Guam party chief), Sherman K. Neuschel (Chief, Tokyo Office), and Frank C. Whitmore Iphief, Military Geology Branch).. properties of the surficial deposits of the island, making this study a useful precursor for later terrain analyses. A unifying factor in the program was the USGS tradition of geologic mapping—an art that is hard to reduce to the written word. It is taught in the field, and chief among many complex components of the technique is an awareness of scale, which governs the definition of map units, both for basic geology and for applied subjects such as location of construction materials. Most mapping was at scales of 1:25,000 or 1:50,000, depending on the size of the island. These large scales allowed separation of map units which would have to be lumped together at smaller scales. This multiplication of map units, together with heavy vegetative cover, slowed the field work. The soil scientists did not have the benefit of the world-recognized time-rock classification available to geologists. In the United States, the Division of Soil Survey, Department of Agriculture, had gone to great pains to erect a soil-classification system with the catchy title The Seventh Approximation, but in foreign areas with Figure 4. Gilbert Corwin (left) confers with Carl Stensland (soil scientist), Tokyo, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution. Press; National Research Council (U. S. ). Pacific Science Board; Smithsonian Institution; National Museum of Natural History (U. S. ); United States. Bureau of Sport Fisheries and Wildlife. Washington, D. C.
Size: 1850px × 1350px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauth, bookauthorsmithsonianinstitutionpress, bookcentury1900
