Title: U-Pb chronology in zircon from Harabaqi granitic pluton in northeastern Daxing'anling area and its origin
Abstract:Harabaqi granitic pluton is mainly composed of adamellite-moyite and granodiorite. The authors used LAKG-5CD2ICPKG-5CD2MS as zircon UKG-5CD2Pb dating and analyzed the major and trace element compositi...Harabaqi granitic pluton is mainly composed of adamellite-moyite and granodiorite. The authors used LAKG-5CD2ICPKG-5CD2MS as zircon UKG-5CD2Pb dating and analyzed the major and trace element compositions in the granitic pluton. The results show that the pluton formed in Early Paleozoic, with intrusions for two times. The intrusion of adamellite-moyite (aged in 500 Ma) is earlier than of the granodiorite (461 Ma). The pluton is marked by rock assemblage and geochemistry of postorogenic granite, and is the postorogenic pluton after collision between Erguna plot and Xing'an plot. The adamellite-moyite and granodiorite came from the same magma source, and the provenance may be the crustal substance from new accretion of mantle. The difference in geochemistry between the two kinds of rocks resulted from their distinct degree of partial melting of the provenance.Read More
Publication Year: 2006
Publication Date: 2006-01-01
Language: en
Type: article
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Cited By Count: 18
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