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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 Geology of Madagascar ： ウィキペディア英語版 Geology of Madagascar The geology of Madagascar comprises a variety of rocks of Precambrian age which make up the larger part of the east and centre of the island. They are intruded by basalts and rhyolites of Mesozoic to Cenozoic age. In contrast, the western part of the island is formed from sedimentary rocks of Carboniferous to Quaternary age.〔(Madagascar, geology Extractive Industries Source Book )〕 The island is a micro-continent, being a sizeable fragment of continental crust which was severed from the main African plate over 150 million years ago along what is now the Mozambique Channel; an episode associated with the Mesozoic volcanism evident on the island. ==Economic geology== Madagascar is a leading producer of sapphires but produces a range of other gemstones too. It is also a major source of graphite, being the second-largest producer in Africa.〔http://www.eisourcebook.org/1479_Mining.html〕 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「Geology of Madagascar」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.