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28 views • September 2, 2021

【新視角聽新聞】(國語)美國大峽谷著名未解之謎

美國大峽谷(Grand Canyon)記錄著地球近20億年來地質變遷的歷史,但其中有一段長達10億年的時期在這些層積岩內完全找不到蹤跡。一份新研究提出可能的解釋。 發佈日期:2021年9月3日 責任編輯:Rm
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