Excluding fossils, McSween says, a quartz-rich sandstone is probably one of the most Earth-specific rocks imaginable—creating one would require plate tectonics, erosion, and water.
麦克斯温说，除去化石，富含石英的砂岩可能是我们所能想象到的最具地球特色的岩石之一——要想形成这样的砂岩，需要板块构造、侵蚀和水的作用。
Tectonic erosion
原声例句
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Continental arc
A continental arc is a type of volcanic arc occurring as an "arc-shape" topographic high region along a continental margin. The continental arc is formed at an active continental margin where two tectonic plates meet and a subduction zone develops. The magmatism and petrogenesis of continental crust are complicated: in essence, continental arcs reflect a mixture of oceanic crust materials, mantle wedge and continental crust materials.
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