Near-Surface Geologic Investigations at Eniwetok Atoll.
Final rept. Jan 69-Jun 73,
AIR FORCE WEAPONS LAB KIRTLAND AFB N MEX
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The near-surface geology to a depth of 300 feet beneath several of the windward islands and reefs at Eniwetok Atoll was investigated during 1971 and 1972. Rotrary drilling approximately 130 holes, 8000 lineal feet and seismic refraction approximately 50,000 feet of traverse were the primary field methods employed. Samples, classified on the basis of physical characteristics, were assigned to one of the following descriptive lithologic units Upper Sediment, Upper Limestone, Lower Sediment, or Lower Limestone. In all sections drilled, these units were found to be sequentially ordered with depth. Correlation between geologic cross sections and seismic refraction profiles for two islands studied in detail indicate an internally consistent lithologic structure to the depth investigated.
- Geology, Geochemistry and Mineralogy