Slices of ancient oceanic crust composed of mafic-ultramafic complexes, tectonically emplaced onto the continents, are called ____.

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Slices of ancient oceanic crust composed of mafic-ultramafic complexes that have been tectonically emplaced onto the continents are called ophiolites. These are important geological structures that provide insights into the composition and history of the Earth's oceanic crust.

Slices of Ancient Oceanic Crust Composed of Mafic-Ultramafic Complexes, Tectonically