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Mont Yamaska : ウィキペディア英語版 | Mont Yamaska
Mont Yamaska is part of the Monteregian Hills in southern Quebec. Its summit stands above sea level. This mountain is largely covered with deciduous forest dominated by sugar maple. Some apple orchards are raised on lower slopes. ==Geology== Mont Yamaska is composed of igneous rock and hornfels. The igneous rock is mostly mafic with much gabbro, essexite, and a titanium-rich pyroxenite. Mont Yamaska might be the deep extension of a vastly eroded ancient volcanic complex, which was probably active about 125 million years ago.〔(A Hundred-Million Year History of the Corner Rise and New England Seamounts ) Retrieved on 2007-08-01〕 The mountain was created when the North American Plate moved westward over the New England hotspot,〔 along with the other mountains of the Monteregian Hills that form part of the Great Meteor hotspot track.
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「Mont Yamaska」の詳細全文を読む
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