下图为某处地层未曾倒置的地质剖面图，其中①至④代表所在地层的

更新 2022-09-03
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下图为某处地层未曾倒置的地质剖面图，其中①至④代表所在地层的成岩作用。

下列有关该处地质事件发生的先后顺序，最正确的是（）

A．甲乙丙	B．甲丙乙
C．乙丙甲	D．丙乙甲

丙侵入岩脉应为何种岩石（）

A．沉积岩	B．岩浆岩
C．变质岩	D．资料不足，无法判断

图中⑤处岩石发生了变质，形成的岩石最可能是（）

A．石灰岩	B．大理岩
C．花岗岩	D．玄武岩

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