Bonus

Rich deposits of chromite formed within these features are often described as “podiform.” For 10 points each:
[10h] Name these features whose components often mix to form namesake mélanges (“may-LON-jiz”). Harzburgite (“HARTS-burg-ite”) and dunite (“DOON-ite”) are usually found toward the bottom of these features, which are underlain by a layer called the metamorphic sole.
ANSWER: ophiolites [accept ophiolitic chromitites or ophiolitic mélanges]
[10m] Layers of this rock are found below sheeted dike complexes and above peridotite in ophiolite sequences. This igneous rock is the intrusive equivalent of basalt.
ANSWER: gabbros
[10e] This term is often used to describe dark-colored igneous rocks like gabbro. In general, this portmanteau term refers to rocks that are rich in magnesium and iron, in contrast with felsic rocks.
ANSWER: mafic [accept ferromagnesian]
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