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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 Andean-Saharan glaciation ： ウィキペディア英語版 Andean-Saharan glaciation The Andean-Saharan glaciation occurred during the Paleozoic from 450 Ma to 420 Ma, during the late Ordovician and the Silurian period. During this period glaciation is known from Arabia, Sahara, West Africa, the south Amazon, and the Andes. The center of glaciation migrated from Sahara in the Ordovician (450-440 Ma) to South America in the Silurian (440-420 Ma). The maximum extent of glaciation developed in Africa and eastern Brazil. A minor ice age, the Andean-Saharan was preceded by the Cryogenian ice ages (850-630 Ma, the Sturtian and Marinoan glaciations), often referred to as Snowball Earth, and followed by the Karoo Ice Age (350-260 Ma). ==References== 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「Andean-Saharan glaciation」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.