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Geochemical Characteristics of Mineral Phases in the Mantle Xenoliths from Sunheul-ri, Jeju Island  

Kil, Young-Woo (Geological Museum, Korea Institute of Geoscience and Mineral Resources)
Shin, Hong-Ja (Geological Museum, Korea Institute of Geoscience and Mineral Resources)
Yun, Sung-Hyo (Department of Earth Sciences, Pusan National University)
Koh, Jeong-Seon (Department of Earth Sciences, Pusan National University)
Ahn, Ung-San (Department of Earth and Environmental Sciences, Andong National University)
Publication Information
Journal of the Mineralogical Society of Korea / v.21, no.4, 2008 , pp. 373-382 More about this Journal
Abstract
First reported geochemical characteristics of mantle xneoliths (spinel peridotites) from Sunheul-ri, Jeju Island, provide important clues for understanding the lithosphere composition, equilibrium temperature, and the period of entrainment and transport of the xenoliths in the host magma. Core and rim of mineral phases in the xenoliths are constant chemical compositions as $Fo_{89-90}$ of olivines. The ranges of equilibrium temperature, obtained by two pyroxenes geothermometer, are about $951{\sim}1035^{\circ}C$ for Sunheul-ri spinel peridotite xenoliths and are similar to the range of equilibrium temperatures for the xenoliths from other sites in Jeju island. The period of entrainment and transport of the xenoliths in the host magma of Sunheul-ri mantle xenoliths is about 42 days.
Keywords
Sunheul-ri; mantle xenolith; spinel peridotite; equilibrium temperature; period of entrainment;
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Times Cited By KSCI : 1  (Citation Analysis)
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