The petrogenesis of ultramafic rocks in the >3.7Ga Isua supracrustal belt, southern West Greenland: Geochemical evidence for two distinct magmatic cumulate trends
作者： Kristoffer Szilas , Peter B. Kelemen , Minik T. Rosing
关键词: Igneous rock 、 Olivine 、 Volcanic rock 、 Geochemistry 、 Trace element 、 Petrology 、 Petrogenesis 、 Basalt 、 Ultramafic rock 、 Plagioclase 、 Geology
摘要: … In particular the very high Al 2 O 3 /TiO 2 ratios are not known from any komatiites, whereas … -type” komatiites, but have significantly higher Al 2 O 3 contents. Besides, primary komatiite …
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