玄武捕獲橄欖岩 - 地球科學討論
By Oscar
at 2011-02-24T02:48
at 2011-02-24T02:48
Table of Contents
題目
澎湖的鹼性玄武岩中有時會夾有富含橄欖石的橄欖岩塊,請問橄欖岩塊:
(A)玄武岩質岩漿冷凝過程,經岩漿分化形成的
(B)因為後期岩漿岩柱狀節理侵入,在裂隙中冷凝形成的
(C)玄武岩岩漿的母質之一,年代較玄武岩老
答案C
上部地函的岩漿較玄武岩老?
不懂?
--
澎湖的鹼性玄武岩中有時會夾有富含橄欖石的橄欖岩塊,請問橄欖岩塊:
(A)玄武岩質岩漿冷凝過程,經岩漿分化形成的
(B)因為後期岩漿岩柱狀節理侵入,在裂隙中冷凝形成的
(C)玄武岩岩漿的母質之一,年代較玄武岩老
答案C
上部地函的岩漿較玄武岩老?
不懂?
--
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地球科學
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