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Geology of Connecticut : ウィキペディア英語版 | Geology of Connecticut As part of New England, Connecticut has undergone much geologic change shaped by plate tectonics, volcanism, and glacial activity. ==Appalachian Mountains==
During the early Triassic, the super-continent Pangea was formed as the Iapetus Ocean closed up and the proto-North American continent collided with Avalonia, part of modern-day Africa. This caused great uplift and the creation of the Appalachian Mountains, which, at the time, were bigger than modern-day Himalayas. Erosion of the Appalachian Mountains now exposes metamorphic rocks once very deep in the Earth’s mantle and uplifted during this time period.
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 Connecticut」の詳細全文を読む
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