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【题目】读岩石圈的物质循环图(如图),完成下列要求。

(1)写出下列代号的物质名称:

甲_______________;乙_______________;丙_______________;丁_______________。

(2)图中对应的地质作用分别是:

A_______________;B_______________;C_______________;D_______________。

(3)图中箭头B、D包含的意义分别是:

B______________________________;D______________________________。

【答案】

(1)岩浆岩 沉积岩 变质岩 岩浆(4分)

(2)外力作用 变质作用 重熔再生作用 冷却凝固(岩浆活动)(4分)

(3)已生成的岩石在一定温度、压力作用下发生变质形成变质岩,地球内部的岩浆,经过冷却凝固形成岩浆岩(2分)

【解析】

试题分析:

(1)岩浆丁活动形成岩浆岩甲;岩浆岩经过外力作用形成沉积岩乙;岩浆岩经过变质作用形成变质岩丙;沉积岩经过变质作用形成变质岩丙;变质岩经过外力作用形成沉积岩乙;各类岩石又可重熔形成新的岩浆。

(2)岩浆丁经过岩浆活动D形成岩浆岩甲;岩浆岩经过外力作用A形成沉积岩乙;岩浆岩经过变质作用B形成变质岩丙;沉积岩经过变质作用B形成变质岩丙;变质岩经过外力作用A形成沉积岩乙;;各类岩石又可重熔再生作用C形成新的岩浆。

(3)变质作用B,岩浆活动D,都是在高温、高压条件下形成的;变质作用B是已生成的岩石在一定温度、压力作用下发生变质形成变质岩;岩浆活动D是地球内部的岩浆,经过冷却凝固形成岩浆岩。

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