SHRIMP U-Pb Zircon Geochronology and Geochemistry of Drill Cores from the Pohang Basin

descriptionPublicationkeyboard_double_arrow_right Article 30 Sep 2014 English Publisher:Petrological Society of KoreaJournal:The Journal of the Petrological Society of Korea, volume 23, pages 167-185 (issn: 1226-2471,

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Authors: Tae-Ho Lee; Keewook Yi; Chang-Sik Cheong; Youn-Joong Jeong; Namhoon Kim; Myoung-Jung Kim;

doi: 10.7854/jpsk.2014.23.3.167

SHRIMP U-Pb Zircon Geochronology and Geochemistry of Drill Cores from the Pohang Basin

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Abstract

SHRIMP zircon U-Pb ages and major element and Sr-Nd isotopic compositions were determined for drill cores (374-3390 m in depth) recovered from three boreholes in the Pohonag basin, southeastern Korea. Shallow-seated volcanic rocks and underlain plutonic rocks were geochemically classified as rhyolite and gabbro-granite, respectively. They showed high-K calc-alkaline trends on the and AFM diagrams. Zircons from volcanic rocks of borehole PB-1 yielded concordia ages of (n

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