常用玄武岩构造环境判别图解-最新版.ppt

常用玄武岩构造环境判别图解
主量元素图解
微量元素图解
与残留辉石有关的判别图解
板块边缘
板块内部
(plate margin)
(within plate)
会聚
离散
大洋地壳
大陆地
(converging)
(diverging
ic crust)(continental crust)
火山弧
洋中脊
洋岛
大陆裂谷
(volcanic arc
Cocean ridge)
(ocean island) (continental rift)
火山弧玄武岩
洋底玄武岩
洋岛玄武岩
大陆玄武岩
(volcanic arc basalt
(ocaen-floor basalt) (
ocean isaI
d basalt)(continental basalt)
低钾拉斑钙碱性橄榄拉斑碱性拉斑碱性拉斑碱性
玄武岩玄武岩粗安岩玄武岩玄武岩玄武岩玄武岩玄武岩玄武岩
(low-K (calc-alkali (shosh-(tholeiite)
(tholeiite)(alkali-(tholeiite) (alkali
tholeiite) basalt) onite)
玄武岩形成构造环境分类图(据 Pearce等,1973)
参考文献
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90s ectonic sctting of basic volcanic rocks determined using trace clement analyses. Earth and Planetary Scicnce Letters,
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d discriminate between magma series
Wang B Glover, teton cs est of the most commonly used geochemical diseriminant diagrams and pateros. Earth- Science Reviews, 1992
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Clorke D