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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Geological history of Europe ： ウィキペディア英語版 Geological history of Europe The formation of Europe as a coherent landmass dates to after the breakup of Pangaea, taking place during the Oligocene and completed by the early Neogene period, some 20 million years ago. == Pre-Pleistocene == Alpine orogeny started as early as the Mesozoic with the formation of the Alpide belt, some 200 Mya. Even earlier orogenies relevant for the ultimate formation of Europe are the Caledonian orogeny, some 400 Mya and the Variscan orogeny, some 300 Mya. Until the lower Oligocene period, about 32 Mya, the future lands of Europe were an island continent, separated from Asia by a shallow sea, but possessing intermittent land-bridge connections to North America via Greenland. Many animal species from the much larger North America colonized Europe during these times. As sea levels changed and sediments accumulated, the sea between Europe and Asia gradually dried out and Europe became a western appendage of the Earth's largest land mass. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Geological history of Europe」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.