The western portion of the Ozark Mountains enters Oklahoma near the centre of the eastern boundary, and extends W.S.W.
The ores of the Joplin district, in the Ozark uplift in the Mississippi Valley, are remarkable in that they are specially adapted to mechanical concentration.
Above the sea, in the Ozark Mountain region.
In the same way the western side of the em- Mississippi ~ayment, trending south and south-west, passes along the Emba.vmeni.lower south-eastern side of the dissected Ozark plateau of southern Missouri and northern Arkansas, which in many ways resembles the Appalachian plateau, and along the eastern end of the Massern ranges of the Ouachita mountain system in central Arkansas, which in geological history and topographical form present many analogies with the ridges and valleys of the Appalachians; and as the coastal plain turns westward to Texas it borders the Arbuckle hills in Oklahoma, a small analogue of the crystalline Appalachian belt.
The Boston Mountains are substantially a continuation of the Ozark dome of Missouri.
Are attained in the Boston Mountains, which are the highest portion of the Ozark uplift, and the most picturesque.
==Flora== Arkansas lies in the humid, or Austroriparian, area of the Lower Austral life-zone, except the highlands of the Ozark uplift and Ouachita Mountains, which belong to the humid, or Carolinian, area of the Upper Austral.
The great zinc and lead area along the northern border in the plateau portion of the Ozark region has proved a disappointment in development; the iron areas have hardly been touched, and the product of the exceptionally promising deposits of manganese lost ground after 1890 before ' For 1906 the Y earbook of the U.
HOT SPRINGS, a city of Arkansas, U.S.A., the county-seat of Garland county, at the easterly base of the Ozark mountains, 55 m.
He composed a considerable, quantity of poetry and several minor prose works, especially Notes on the Iroquois (1846); Scenes and Adventures in the Ozark Mountains (1853).
EUREKA SPRINGS, a city and health resort, one of the countyseats - Berryville being the other - of Carroll county, in the extreme north-western part of Arkansas, U.S.A., in the Ozark uplift, 1800 ft.
Missouri has three distinct physiographic divisions: a north-western upland plain, or prairie region; a lowland, in the extreme south-east; and, between these, the Missouri portion of the Ozark uplift.
The boundary between the prairie and Ozark regions follows the Missouri river from its mouth to Glasgow, running thence south-westward, with irregular limits, but with a direct trend, to Jasper county at the south-east corner of Kansas; and the boundary between the Ozark and embayment regions runs due south-west from Cape Girardeau.
And in the extreme north-east about 500 ft., while the rim of the region to the south-east, along the border of the Ozark region, has an elevation of about 900 ft.
The Ozark region is substantially a low dome, with local faulting and minor undulations, dominated by a ridge - or, more exactly, a relatively even belt of highland - that runs from near the Mississippi about Ste Genevieve county to Barry county on the Arkansas border; the contour levels falling with decided regularity in all directions below this crest.
Or so above the water, from the mouth of the Meramec to Ste Genevieve, mark where that river cuts the Ozark ridge, which, across the river, is continued by the Shawnee Hills in Illinois.
Rather broad, smooth valleys, well degraded hills with rounded summits, and - despite the escarpments - generally smooth contours and sky-lines, characterize the whole of this Ozark region.
The larger streams of the Ozark dome are of decided interest to the physiographer.
2 Both the Ozark region and the prairie region are divided by minor escarpments into ten or twelve sub-regions.
Caves, chiefly of limestone formation, occur in great numbers in and near the Ozark Mountain region in the south-western part of Missouri.
Knox Cave, in Greene county, and several caverns near Ozark, in Christian county, are also of interest.
South of Hannibal), which has a deep pool containing many eyeless fish; and various caverns in Miller, Ozark, Greene and Parry counties.
The St Francois Mountains and the neighbouring portion of the Ozark region are capped with Archean rocks.
Three physiographic regions may be distinguished within the state - the first, a small portion of the Ozark uplift in the extreme south-east corner; the second, the Prairie Plains, covering approkimately the east third of the state; the third, the Great Plains, covering the remaining area.
In the southwest, below the Arkansas river, is an area of sandhills, and the Ozark Plateau region, as above stated, extends into the southeast corner, though not there much elevated.
All the rest of the Ozark region except the extreme south-western corner of the state is Cambro-Ordovician.
The Ozark uplift tempers very agreeably the summers in the south, but does not affect the climate of the state as a whole.
Speaking generally, the Ozark region is characterized by reddish clays, mixed with gravels and stones, and cultivable in inverse proportion to the amount of these elements; northern Missouri by a generally black clay loam over a clay subsoil, with practically no admixture of stones; the southern prairies, above referred to, share the characteristics of those north of the Missouri.
Grapes are mainly grown in the Ozark region, and wine is produced in Gasconade and other central and north-central counties in amounts sufficient to place Missouri, California aside, in the front rank of wine states in the Union.
Copper occurs in various localities, but is of economic importance only in the Ozark uplift; it was first mined in small quantities in 1837.