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Gold Butte National Monument
(Encyclopedia) Gold Butte National Monument, 296,937 acres (90,506 hectares), SE Utah, est. 2016 and managed by the Bureau of Land Management. Named for a mining ghost town, the monument embraces a…Miocene epoch
(Encyclopedia) Miocene epochMiocene epochmīˈəsēn [key], fourth epoch of the Tertiary period in the Cenozoic era of geologic time (see Geologic Timescale, tablegeologic timescale, table), lasting from…hogback
(Encyclopedia) hogback, sharp-crested ridge with steep slopes on both sides, formed by the erosion of steeply tilted rock layers. Hogbacks are commonly formed along the eroded flanks of large,…Natural Bridges National Monument
(Encyclopedia) Natural Bridges National Monument, 7,636 acres (3,093 hectares), SE Utah; est. 1908. Located in an area of colored cliffs and box canyons, the monument contains three huge natural…Monument Valley
(Encyclopedia) Monument Valley, scenic arid region, c.2,000 sq mi (5,000 sq km), SE Utah and NE Ariz. Located in the Navajo Indian Reservation, Monument Valley is not a true valley but an area of…Rainbow Bridge National Monument
(Encyclopedia) Rainbow Bridge National Monument, 160 acres (65 hectares), S Utah; est. 1910. Rainbow Bridge, the largest natural bridge in the world, is a symmetrical, pink, sandstone arch, 309 ft (…silicosis
(Encyclopedia) silicosissilicosissĭlĭkōˈsĭs [key], occupational disease of the lungs caused by inhalation of free silica (quartz) dust over a prolonged period of time. Free silica is dispersed in the…Fermanagh
(Encyclopedia) Fermanagh Fermanagh fərmănˈə [key], district, 656 sq mi (1,699 sq km), SW Northern Ireland. Enniskillen…Catskill Mountains
(Encyclopedia) Catskill Mountains, dissected plateau of the Appalachian Mt. system, SE N.Y., W of the Hudson River. This glaciated region, wooded and rolling, with deep gorges and many waterfalls, is…Vosges, mountain range, France
(Encyclopedia) VosgesVosgesvōzh [key], mountain range, E France, between the Alsatian plain in the east and the plateau of S Lorraine in the west. It extends generally north and parallel to the Rhine…Trending
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