Tholeiitic magma series

（重定向自Tholeiitic）

This is an AFM diagram, a ternary diagram showing the relative proportions of the oxides of Na2O + K2O (A), FeO + Fe2O3 (F), and MgO (M). The arrows show the path of the magmas in the tholeiitic and the calc-alkaline magma series.

Photomicrograph of thin section of tholeiitic basalt (in plane polarized light)

Photomicrograph of thin section of tholeiitic basalt (in cross polarized light)

The tholeiitic magma series, named after the German municipality of Tholey, is one of two main magma series in igneous rocks, the other magma series being the calc-alkaline. A magma series is a series of compositions that describes the evolution of a mafic magma, which is high in magnesium and iron and produces basalt or gabbro. The International Union of Geological Sciences recommends that tholeiitic basalt be used in preference to the term "tholeiite" (Le Maitre and others, 2002).

单词	Tholeiitic
释义	Tholeiitic 英语百科 Tholeiitic magma series （重定向自Tholeiitic） The tholeiitic magma series, named after the German municipality of Tholey, is one of two main magma series in igneous rocks, the other magma series being the calc-alkaline. A magma series is a series of compositions that describes the evolution of a mafic magma, which is high in magnesium and iron and produces basalt or gabbro. The International Union of Geological Sciences recommends that tholeiitic basalt be used in preference to the term "tholeiite" (Le Maitre and others, 2002).
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