Drilling on Midway Atoll, Hawaii

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Science  26 May 1967:
Vol. 156, Issue 3778, pp. 1088-1094
DOI: 10.1126/science.156.3778.1088


Two holes drilled through reef sediments into basalt have established a geologic section through the Miocene. Midway was built above the sea by flows that were weathered and partially truncated in pre-Miocene time. After submergence, volcanic clays were reworked and covered by limestones. Overall ubmergence was interrupted at least twice by emergence. The limestones have been leached, recrystallized, and partially dolomitized.