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Canoe Mountain is a stratigraphic ridge in central Pennsylvania, United States, running east of the Allegheny Front and west of Tussey Mountain. It is forms a continuous ridge with Brush Mountain to the west. Canoe Mountain forms the border between Blair County and Huntingdon County. Pennsylvania State Game Lands Number 166 lies in the valley between Canoe Mountain and Brush Mountain. ==Geology== Canoe Mountain is in the western part of the Ridge and Valley province of the Appalachian Mountains. Neighboring Tussey Mountain is made up of Paleozoic rocks, consisting of Ordovician Bald Eagle Formation (sandstone), Juniata Formation (shale), and Silurian Tuscarora Formation (Quartzite) that were folded during the Appalachian orogeny in the Permian period, then eroded down to their present form.〔Berg, Thomas M., and Dodge, Christine M., eds., Map 61, Atlas of Preliminary Geologic Quadrangle Maps of Pennsylvania, Bureau of Topographic and Geologic Survey, 1981 ((Spruce Creek Quadrangle ), (Frankstown Quadrangle ))〕 The Tuscarora Quartzite is more resistant to erosion than the Bald Eagle Sandstone, and both are more resistant than the Juniata formation between them or the other formations stratigraphically above and below them. The two sandstones thus form a double ridge line with the harder Tuscarora at the crest. Canoe Mountain and the southern spur of Brush Mountain form a syncline. 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「Canoe Mountain」の詳細全文を読む スポンサード リンク
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