Sands of the Mid-Atlantic Ridge
- 17 September 1965
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 149 (3690) , 1367-1370
- https://doi.org/10.1126/science.149.3690.1367
Abstract
Sands collected at 24 locations along the crest of the Mid-Atlantic Ridge between 57°S and 38°N consist predominantly of olivine, diopsidic augite, hypersthene, enstatite, amphibole, quartz, plagioclase, and volcanic glass, suggesting an olivine tholeiitic source. Eight cores contain relatively pure mineral sands; three of these cores reflect local volcanic activity. In 16 cores the manganese-coated mineral grains are mixed in a current-winnowed foraminiferal sand or ooze.Keywords
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