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Articles
Drilling on Midway Atoll, Hawaii
1 U. S. Geological Survey, Washington, D.C.
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.
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Science. ISSN 0036-8075 (print), 1095-9203 (online)