Exercise Oceanic lithosphere

1) Describe the lithological buildup of the oceanic lithosphere starting from the mantle part (see also overhead 46 inset). What rock types occur, and what is their overall mineralogy?

2) Olivine and pyroxenes are silicate minerals that form solid-solutions. What are the end-members of these minerals, and what is the chemical formula of these end-members? What is the difference between orthopyroxene and clinopyroxene?

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