Petrogenesis of Alkaline Rocks in the Sulu Orogen-Evidence from Elemental Geochemistry

• 责任者：Wang Tao (State Key Laboratory of Ore Deposit Geochemistry ; Institute of Geochemistry ; Chinese Academy of Sciences ; Guiyang 550002 ; China) ; Liu Shen
• 刊名：Acta Mineralogica Sinica
• 出版年：2010
• 卷期：30(2)
• 关键词：碱性岩 ; alkali rocks ; 元素地球化学 ; elements geochemistry ; 苏鲁造山带 ; Su-Lu Orogenic Belt
• 页码：p.194-206
• 图表：10 illus., 1 table, 51 refs.
• 分类号：0801
• issnNo：ISSN1000-4734
• isbnNo：CN52-1045/P

The authors reported the major and trace elements of alkaline rocks from the Sulu orogenic belt. Based on the above geochemical features, the authors propose that these alkaline rocks were derived from partial melting of the enriched lithospheric mantle in the extensional tectonic setting. Meanwhile, the parental magma underwent intense mineral fractional crystallization, including clinopyroxene, plagioclase, apatite, hornblende and biotite, whereas there had no crustal contamination during magma ascent.