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Week 2: When the Earth was young (Archean eon)

Week 2: When the Earth was young (Archean eon). EPSC 233-001 Fall 2002. Oceanic and continental crusts have different proportions of the main elements. continental (felsic) crust: more Al, Si, less Mg, Fe average density = 2.7 g/cm 3 oceanic (mafic) crust: less Al, Si, more Mg, Fe

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Oceanic mafic crust - PowerPoint PPT Presentation

Week 2: When the Earth was young (Archean eon)