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- W2387669918 abstract "According to the total alkaline vs. silica (TAS) diagram, the volcanic rocks of the Tiaojishan and Houcheng Formation exposed in Sihai area, northern part of Beijing Municipality, belong to the trachyandesite-trachyte-rhyolite association. These volcanic rocks cannot be classified as Shoshonite series or typical alkaline olivine basalt series. We proposed they are the collage of typical high-K calc-alkaline, K-rich tholeiitic and transitional high-K calc-alkaline series rocks. All samples of the volcanic rocks exhibit significant enrichment of light rare earth elements (LREE), and small or no negative Eu anomaly in trachyandesitic rocks, but negative Eu anomaly in rhyolite and trachytoid rocks. The volcanic rocks erupted in late stage of the early or middle Yanshanian deformation episode." @default.
- W2387669918 created "2016-06-24" @default.
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- W2387669918 date "2003-01-01" @default.
- W2387669918 modified "2023-09-25" @default.
- W2387669918 title "A Preliminary Discussion on Petrochemical Characteristics of the Volcanic Rocks of Tiaojishan-Houcheng Formation in Sihai Area, Beijing Municipality" @default.
- W2387669918 hasPublicationYear "2003" @default.
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