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pitchblende
(Encyclopedia) pitchblendepitchblendepĭchˈblĕndˌ [key], dark, lustrous, heavy mineral, a source of radium and uranium. Largely natural uranium oxides, triuranium octaoxide (U3O8) and uranium dioxide…Colorado, state, United States
(Encyclopedia) CE5 ColoradoColoradokŏlərădˈə, –rădˈō, –räˈdō [key], state, W central United States, one of the Rocky Mt. states. It is bordered by Wyoming (N), Nebraska (N, E), Kansas (E),…mesa, in geology
(Encyclopedia) mesamesamāˈsə [key] [Span.,=table], name given in the SW United States to a small, isolated tableland or a flat-topped hill. Two or more of the sides are steep and usually…Colorado Springs
(Encyclopedia) Colorado Springs, city (2020 pop. 478,961), seat of El Paso co., central Colo., on Monument and Fountain creeks, at the foot of Pikes…Geology of the Grand Canyon: Chapter V. The Toroweap And Uinkaret.
CHAPTER IV. THE GREAT DENUDATION.CHAPTER VI. THE KAIBAB.CHAPTER V. THE TOROWEAP AND UINKARET.The present chapter will contain an account of a journey from the village Kanab to the Toroweap…Colorado State University
(Encyclopedia) Colorado State University, at Fort Collins; land-grant with state and federal support; chartered 1870, opened 1879 as an agricultural college, assumed present name in 1957. There is a…Geology of the Grand Canyon: Chapter Vii. Point Sublime.
CHAPTER VI. THE KAIBAB.CHAPTER VIII. THE EXCAVATION O...CHAPTER VII. POINT SUBLIME.Wherever we reach the Grand Cañon in the Kaibab it burst upon the vision in a moment. Seldom is any warning…Colorado–Big Thompson project
(Encyclopedia) Colorado–Big Thompson project, constructed by the U.S. Bureau of Reclamation to divert water from the headstreams of the Colorado River to irrigate c.720,000 acres (291,400 hectares)…Colorado, rivers, United States and Mexico
(Encyclopedia) ColoradoColorado[1] kŏlərădˈə, –rădˈō, –räˈdō [2] kŏlərāˈdə, –räˈdə [key]. 1 Great river of the SW United States, 1,450 mi (2,334 km) long, rising in the Rocky Mts. of N Colo., and…Geology of the Grand Canyon: The Jurassic.
THE CRETACEOUS.THE TRIAS.THE JURASSIC.Beyond the Cretaceous, as we descend the stairway of terraces, the Jurassic comes to daylight. It forms a belt encircling the Cretaceous and outside of…Trending
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