Petrogenesis and Tectonic Significance of the Laochang Basalt in
详细信息
- 责任者：Chen Mi (State Key Laboratory of Ore Deposits Geochemistry ; Institute of Geochemistry ; Chinese Academy of Sciences ; Guiyang 550002 ; China) ; Huang Zhilong
- 刊名：Acta Mineralogica Sinica
- 出版年：2011
- 卷期：31(1)
- 关键词：洋岛玄武岩 ; ocean-island basalts ; 云南 ; Yunnan Province
- 页码：p.55-61
- 图表：7 illus., 2 tables, 36 refs.
- 分类号：0801
- 出版序号：20120136
- issnNo：ISSN1000-4734
- isbnNo：CN52-1045/P
摘要
A systematic investigation on major and trace elements and Nd-Pb isotope geochemistry date of the Laochang basalt in western Yunnan Province shows that the basalt is a typical oceanic island basalt (OIB). Nd-Pb isotope data revealed that basaltic magma contained enriched mantle component. The basaltic magma activity in Laochang may be related to mantle plume, and the basalt may be the mixed products of mantle plume (asthenosphere) melting of the magma and enriched lithospheric mantle magma.
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