Basement Geochemistry and Geochronology of Central Malaita, Solomon Islands, with Implications for the Origin and Evolution of the Ontong Java Plateau |
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Authors: | TEJADA, M. L. G. MAHONEY, J. J. NEAL, C. R. DUNCAN, R. A. PETTERSON, M. G. |
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Affiliation: | 1NATIONAL INSTITUTE OF GEOLOGICAL SCIENCES, UNIVERSITY OF THE PHILIPPINES, DILIMAN, QUEZON CITY, 1101 PHILIPPINES 2SCHOOL OF OCEAN AND EARTH SCIENCE AND TECHNOLOGY, UNIVERSITY OF HAWAII, HONOLULU, HI 96822, USA 3DEPARTMENT OF CIVIL ENGINEERING AND GEOLOGICAL SCIENCES, UNIVERSITY OF NOTRE DAME, NOTRE DAME, IN 46556, USA 4COLLEGE OF OCEANIC AND ATMOSPHERIC SCIENCES, OREGON STATE UNIVERSITY, CORVALLIS, OR 97331, USA 5BRITISH GEOLOGICAL SURVEY, ONSHORE MINERALS AND ENERGY RESOURCES, KEYWORTH NG12 5GG, UK |
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Abstract: | Sections of Ontong Java Plateau basalt basement in central Malaita(Solomon Islands) are 0·53·5 km thick andresemble a much-expanded version of that recovered at OceanDrilling Program Site 807. 40Ar39Ar ages (121125Ma) are identical to those for Site 807, southern Malaita, RamosIsland, parts of the island of Santa Isabel, and Deep Sea DrillingProject Site 289; the |
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