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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 Gulf Trough ： ウィキペディア英語版 Gulf Trough The Gulf Trough, also known as the Suwanee Straits,〔(Coastal Plain Building: Sea level changes shape the continent, Foundation of Florida (section), Paleontology Research Institute )〕 is an ancient geologic feature of Florida present during the Paleogene period, a period of roughly . A strong marine current, similar to the Gulf Stream, scoured the trough from southwest to northeast. ==History== During the Paleogene, what would become Florida was the submerged Florida Platform, a feature not unlike the Bahama Banks composed of carbonate sediments containing foraminifera, corals, bryozoa, and mollusks. Due to the current running through the Gulf Trough, materials needed for sedimentation were instead carried away toward the northeast. During the Eocene through Oligocene, a period of roughly , material born of erosion began building up more rapidly in the Gulf Trough, due to the uplifting of the Appalachian Mountains to the north, which provided the primary source of siliciclastic material transported south via rivers and streams. By the Early Miocene, the trough was filled, and materials continued to move southward covering and replacing the carbonate-depositing marine environment with sands, silts, and clays; these sediments created the peninsula on which terrestrial flora and fauna could become established.〔(Florida Environments Online, Florida's geological history and geological resources, ISSN 0085-0640 )〕 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「Gulf Trough」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.