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The Pryor Mountains are a mountain range in Carbon and Big Horn counties of Montana. They are located on the Crow Indian Reservation and the Custer National Forest, and portions of them are on private land. They lie south of Billings, Montana, and north of Lovell, Wyoming.〔 The mountains are named for Sergeant Nathaniel Hale Pryor, a member of the Lewis and Clark Expedition who vainly pursued horses stolen from the expedition in the area.〔Clawson and Shandera, p. 40-41.〕 The Crow Nation, a Native American tribe which lived nearby, called the mountains Baahpuuo Isawaxaawuua ("Hitting Rock Mountains") because of the abundance of flint there (which was chipped into arrowheads).〔Massingham, p. 134.〕 According to Crow Nation folklore, Little People (a race of high dwarf-like people with spiritual powers) lived in these mountains.〔Saindon, p. 478-481; Frey, p. 68; Montgomery, p. 32.〕 ==Geology== The Pryor Mountains are a region of Montana and Wyoming.〔Cruise and Griffiths, p. 185.〕 The Pryor Mountains consists of Paleozoic, Mesozoic and Cenozoic sedimentary rocks〔Geologic Map〕 the most prominent unit is limestone (known as the Madison Group limestone) laid down about 300 million years ago.〔McRae and Jewell, p. 317.〕〔Gordon and Krumm, p. 2.〕 The limestone and older sediments rest on Archean metamorphic rock consisting of gneiss and schists.〔 The gneiss is exposed along the northeast escarpment of East Pryor Mountain.〔 During the Laramide orogeny in the Late Cretaceous and Paleogene Period (about 70 to 60 million years ago),〔Hodges and Feldman, p. 203.〕 the limestone was faulted and uplifted. The thick limestone blocks〔 were tilted and uplifted as large blocks with the northeastern corner of the blocks forming the Bighorn and the Pryor Mountains.〔〔Voight and Voight, p. 12.〕 Caves, carved by groundwater, can be found in the limestone throughout the Pryors.〔Aarstad, et al., p. 214.〕 Among the better known are Big Ice Cave on the eastern edge of Pryor Mountain, and Mystery Cave (which contains some of the best speleothems of all the caves in the Pryors).〔Rowles, p. 101.〕 Among the more notable are False Cougar Cave on East Pryor Mountain (which was used by Native Americans at times in the past), Shield Trap Cave (which features a vertical shaft about deep), Little Ice Cave, and Bell Trap Cave (which is similar to Shield Trap).〔Committee on Ungulate Management, p. 173; Clawson and Shandera, p. 39.〕 Other popular features of the Pryors include Froggs Fault, a huge fissure in the earth, and a buffalo jump near Dry Head Lookout.〔Pospisil, Allan. "Where the Wild Mustangs Play." ''New York Times.'' May 2, 1971.〕 Just below Dry Head Lookout is a small pocket in the cliff face surrounded by a low man-made fence of rock. This is a place used by several Native American tribes for vision quests, and as of 1971 was perhaps the last undisturbed such place in the United States.〔 The tallest peak in the Pryor Mountains is East Pryor Mountain (elevation ).〔Massingham, p. 7; Holt, p. 60.〕 The Bighorn River flows north from Wyoming and through the plateau between the Bighorn and Pryor mountains. The river flows between the two mountain ranges, and has cut the Bighorn Canyon deep into the limestone.〔 Crooked Creek, one of the few perennial streams in the area, divides the Pryors in two and is one of the few places were Yellowstone cutthroat trout may be found.〔(French, Brett. "Wild Horse Range Pressured By Overgrazing." ''Billings Gazette.'' July 12, 2009. ) Accessed 2011-06-07.〕 The Pryors contain the most diverse bat habitat in Montana as well, with 10 species found there.〔 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「Pryor Mountains」の詳細全文を読む スポンサード リンク
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