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Novaculite, also called Arkansas ... are rich in silica and have found a niche market as a performance additive or ... The Geology of North America. F-2:603-620 ...
The Caballos Novaculite is a geologic formation in Texas. It preserves fossils dating back to the Devonian period. See also. Earth sciences portal; Texas portal;
The Arkansas Novaculite consists of lower, middle, and upper members. The lower member is a massive fractured novaculite, and is the dominant member on Hot Springs Mountain, with a thickness of about 275 ft (84 m) The middle member is a black clay shale interbedded with novaculite, about 10 ft (3.0 m) thick on Hot Springs Mountain.
The Ouachita Mountains (/ ˈ w ɒ ʃ ɪ t ɔː /), simply referred to as the Ouachitas, are a mountain range in western Arkansas and southeastern Oklahoma.They are formed by a thick succession of highly deformed Paleozoic strata constituting the Ouachita Fold and Thrust Belt, one of the important orogenic belts of North America. [3]
A particularly worrisome mussel species has entered North America for the first time through the Sacramento-San Joaquin River Delta — sparking what many are calling an immediate threat to ...
This cactus is found only in Brewster County, Texas, in the United States, where there are three populations remaining near Marathon. [2] [3] The cactus is limited to one outcrop in the Marathon Uplift, where it grows in rocky novaculite soils. [4] [5] It was added to the endangered species list in 1979. [5]
Oil exploration began in earnest in 1916 with an unsuccessful well east of El Dorado, in Union County (which at the time was known as Urbana County). A week after Samuel S. Hunter found modest amounts of oil in the Hunter No. 1 well near Stephens, Arkansas, the Constantin Oil and Refining Company found large amounts of oil and natural gas. Soon ...
The Early Woodland period continued many trends begun during the Late and Terminal Archaic periods, including extensive mound-building, regional distinctive burial complexes, the trade of exotic goods across a large area of North America as part of interaction spheres, the reliance on both wild and domesticated plant foods, and a mobile subsistence strategy in which small groups took advantage ...