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MISSOURI , a See also:north-central See also:state of the See also:United States of See also:America, and one of the greatest and richest, and economically one of the most nearly See also:independent, in the See also:Union, lying almost midway between the two oceans, the Gulf of See also:Mexico and See also:Canada . It is bounded N. by See also:Iowa; E. by See also:Illinois, See also:Kentucky and See also:Tennessee; S. by See also:Arkansas; and W. by See also:Oklahoma, See also:Kansas and See also:Nebraska . Its N. and S. limits are mainly coincident with the See also:parallels of 400 35' and 36° 30' N. See also:lat.—the southernmost boundary, in the S.E. corner, is the See also:meridian of 36° N. lat.—and much of the western border is the meridian of 94° 43' W. See also:long. respectively; but natural boundaries are afforded on the extreme N.E. by the See also:Des Moines See also:river, on the E. by the See also:Mississippi, on the S.E. by the St See also:Francis and on the N.W. by the 1 . The See also:prairie region embraces, accordingly, somewhat more than See also:northern " Missouri—i.e. the portion of the state north of the Missouri river—and somewhat more than a third of the state . It is a beautiful, See also:rolling See also:country, with a See also:great abundance of streams; more hilly and broken in its western than in its eastern See also:half . The See also:elevation in the extreme north-See also:west is about 1200. ft. and in the extreme north-See also:east about 500 ft., while the rim of the region to the See also:south-east, along the border of the Ozark region, has an elevation of about 900 ft . The larger streams have valleys 250 to 300 ft. deep and sometimes 8 to to m. broad, the country bordering them being the most broken of the region . The smaller streams have so eroded the whole See also:face of the country that little of the See also:original See also:surface See also:plain is to be seen . The Mississippi river is skirted through-out the length of the state by contours of 400 to 600 ft. elevation . 2 . The Ozark region is substantially a See also:low See also:dome, with See also:local faulting and See also:minor undulations, dominated by a See also:ridge—or, more exactly, a relatively even See also:belt of highland—that runs from near the Mississippi about Ste See also:Genevieve See also:county to See also:Barry county on the Arkansas border; the See also:contour levels falling with decided regularity in all directions below this See also:crest . High rocky bluffs that rise precipitously on the Mississippi, sometimes to a height of 15o ft. or so above the See also:water, from the mouth of the Meramec to Ste Genevieve, See also:mark where that river cuts the Ozark ridge, which, across the river, is continued by the See also:Shawnee Hills in Illinois . The elevations of the crest in Missouri (the highest portion of the uplift is in Arkansas) vary from II00 to 1600 ft . This second physiographic region comprehends somewhat less than two-thirds of the See also:area of the state . The See also:Burlington escarpment, which in places is as much as 250 to 300 ft. in height, runs along the western edge of the Cambro-Ordovician formations and divides the region into an eastern and a western area, known respectively to physio- rphers as the See also:Salem Upland and the See also:Springfield Upland.' Super-ally, each is a See also:simple rolling See also:plateau, much broken by erosion (though considerable undissected areas drained by underground channels remain), especially in the east, and dotted with hills; some of these are residual outliers of the eroded Mississippian See also:lime-stones to the west, and others are the summits of an archaean See also:topography above which sedimentary formations that now constitute the valley-See also:floor about them were deposited and then eroded . There is no arrangement in chains, but only scattered rounded peaks and See also:short ridges, with winding valleys about them . The highest points in the state are Tom Sauk See also:Mountain (more than 1800 ft.), in See also:Iron county and See also:Cedar See also:Gap Plateau (1683 ft.), in See also:Wright county . Few localities have an elevation exceeding 1400 ft . Rather broad, smooth valleys, well degraded hills with rounded summits, and—despite the escarpments—generally smooth contours and See also:sky-lines, characterize the whole of this Ozark region . 3 . The third region, the lowlands of the south-east, has an area of some 3000 sq. m . It is an undulating country, for the most See also:part well drained, but swampy in its lowest portions . The Mississippi is skirted with lagoons, lakes and morasses from Ste Genevieve to the Arkansas border, and in places is confined by levees . The drainage of the state is wholly into the Mississippi, directly or indirectly, and almost wholly into either that river or the Missouri within the See also:borders of the state .
The latter stream, See also:crossing the state and cutting the eastern and western borders at or near St See also:
Other caves include Fried's Cave, about 6 m. north-east of Rolla, See also:Phelps county, See also:Hannibal Cave (in Ralls county, about i m. south of Hannibal), which has a deep See also:pool containing many eyeless See also:fish; and various caverns in See also:Miller, Ozark, Greene and See also:Parry counties
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See also:Geology.—The See also:geological See also:history of the state covers the See also:period from Algonkian to See also:late Carboniferous See also:time, after which there is a gap in the See also:record until See also:Tertiary time, except that there was apparently a temporary depression of the north-western and south-western corners in the Cretaceous See also:age
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Northern Missouri is covered with a See also:mantle of glacial deposits, generally thick, although in the stream valleys of the north-east the See also:bed-rocks are widely exposed
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The See also:southern limit of these glacial deposits is practically the bluffs bordering the Missouri river, except for a narrow See also:strip along the Mississippi below St Louis
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These See also:Pleistocene deposits include bouldery See also:drift, See also:loess, See also:terrace deposits and See also:alluvium
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The till is generally less than 5 ft. and rarely more than 40 ft. deep, but in some localities it reaches a thickness of zoo ft., or even more
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Modified drift and erratics were also widely deposited
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The loess, however—reddish-See also: The St See also:Francois Mountains and the neighbouring portion of the Ozark region are capped with Archean rocks . All the See also:rest of the Ozark region except the extreme south-western corner of the state is Cambro-Ordovician . Along the margin of this great See also:deposit, on the Mississippi river below St Louis and along the northern See also:shore of the Missouri near its mouth, is an outcrop of Silurian . Parallel to this in the latter locality, and lying also along the Mississippi near by to the north, as well as in the intervening country between the two rivers, are strips of Devonian . Both this and the Silurian are mere fringes on the great area of Cambro-Ordovician . Next, covering the north-eastern and south-western corners of the state, and connecting them with a narrow belt, are the lower Carboniferous See also:measures (which also appear in a very narrow See also:band along the Mississippi for some distance below St Louis) . The western edge of these follows an irregular See also:line from See also:Schuyler county, on the northern border, to See also:Barton county, on the western border, of the state, but with a great eastward projection north of the Missouri river, to See also:Montgomery county . This line defines the eastern limit of the See also:Coal Measures proper, which See also:cover a belt 20 to 8o m. in width . Finally, to the west of these, and covering the north-western corner of the state, are the upper coal measures . Thus the state is to be conceived, in geological history, as gradually built up around an Archean See also:island in successive seas, the whole of the state becoming dry See also:land after the See also:post-Carboniferous uplift . Until the post-Mesozoic uplift of the Rocky Mountain region the north-western portion of the state drained westward . See also:Fauna.—Excepting the embayment region, Missouri lies wholly within the Carolinian area of the Upper Austral See also:life-See also:zone; the 3 There has been some controversy as to whether this See also:condition is due to the elevation and corrosion of original flood-plain meanders after their development in a past See also:base-level condition—which theory is probably correct—or to the natural, simultaneous lateral and See also:vertical cut of an originally slightly sinuous stream, under such See also:special conditions of stream declivity and See also:horizontal bed-strata (conditions supposed by some to be peculiarly fulfilled in this region) as would be favourable to the requisite See also:balance of See also:bank cutting and channel incision . Missouri . Altogether, about 850 m., or considerably more than half of the entire boundary, is water-front: about 56o m. along the Mississippi, about zo8 m. along the Missouri, and about coo m. along the St Francis and Des Moines . The length of the state from north to south, disregarding the St Francis projection southward, is 282 m.,' the width from west to east varies from zo8 to 308 m., and the See also:total area is 69,420 sq. m., of which 693 sq. m. are water surface . See also:Physical Features.—Missouri has three distinct physiographic divisions: a north-western upland plain, or prairie region; a See also: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 See also:Glasgow, See also:running thence south-westward, with irregular limits, but with a See also: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 . embayment lies in the Austro-riparian area of the same zone . Among See also:wild animals, See also:deer and See also:bear are not uncommon . Opossums, raccoons, woodchucks, foxes, grey squirrels and See also:fox-squirrels are See also:common . The See also:game birds include See also:quail ( "Bob White ") and partridges . Prairie chickens (pinnated See also:grouse), pheasants and wild turkeys, all very common as late as 188o, are no longer to be found See also:save in remote and thinly-settled districts . A state fish See also:commission has laboured to increase the common varieties of river fish . So far as these are an See also:article of See also:general See also:commerce, they come, like frogs, terrapin and turtles, mainly from the counties of the embayment region . See also:Mussel See also:fisheries, an See also:industry confined to the Mississippi river counties from See also:Lincoln to See also:Lewis, are economically important, as the shells are used in the manufacture of See also:pearl buttons . There are state fish-hatcheries at St Louis and St See also:Joseph . See also:Flora.—The most valuable forests are in the southern half of the state, which, except where cleared for farms, is almost continuously wooded . An almost entire See also:absence of underbrush is characteristic of Missouri forests . The finest See also:woods are on the eastern upland and on the Mississippi lowlands . The entire woodland area of the state was estimated at 41,000 sq. m. by the See also:national See also:census of 1900 . Ash, oaks, See also:black and sweet gums, chestnuts, hickories, hard See also:maple, See also:beech, See also:walnut and short-See also:leaf See also:pine are noteworthy among the trees of the Carolinian area; the tupelo and bald See also:cypress of the embayment region, and long-leaf and loblolly pines, pecans and live oaks of the uplands, among those characteristic of the Austro-riparian . But the habitats overlap, and persimmons and magnolias of different See also:species are common and notable in both areas . The heavy See also:timber in the south-eastern counties (cypress, &c.), and even scattered stands of such valuable woods as walnut, white See also:oak and red-See also:gum, have already been considerably exploited . See also:Climate.—Missouri has a See also:continental climate, with wide range of moisture and temperature . The Ozark uplift tempers very agreeably the summers in the south, but does not affect the climate of the state as a whole . The normal mean See also:annual temperature for the entire state is about 54° F.; the normal monthly means through the See also:year are approximately 29'6, 30'3, 42, 55.4, 64'6, 73'2, 77'1, 75'7, 68.2, 57, 42.8 and 33.1° F .
The south-eastern corner is crossed by an annual See also:isotherm of 60°, the north-western by one of 50°; and although in the former region sometimes not a See also:day in the year may show an See also:average temperature below freezing-point, at See also:Jefferson City there are occasionally two months of freezing See also:weather, and at See also:Rockport three
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Nevertheless, the yearly means of the five districts into which the state is divided by the national weather service exhibit very slight differences: approximately 52.1, 52.7, 54.4, 56.1 and 55.7° F. respectively for the north-west, north-east, central, south-east and south-west
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On the other See also:hand, the range in any See also:month of local See also:absolute temperatures over the state is habitually great (normally about 5o° in the hottest and loo° or more in the coldest months), and likewise the annual range for individual localities (90° to 1400)
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Temperatures as high as too° to 105° and as low as -2o° or -3o° are recorded locally almost every year, and the maximum range of extremes shown by the records is from 116° at Marble See also:
See also:Agriculture.—Few states have so great a variety of soils
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This variety is due to the presence of different forms of glacial drift, and to the variety of surface rocks
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The northern half of the state is well watered and extremely fertile
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The south-eastern embayment is See also:rich to an exceptional degree
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Speaking generally, the Ozark region is characterized by reddish See also:clays, mixed with gravels and stones, and cultivable in inverse proportion to the amount of these elements; northern Missouri by a generally black See also:clay See also:loam over a clay subsoil, with practically no admixture of stones; the southern prairies, above referred to, See also:share the characteristics of those north of the Missouri
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The Mississippi embayment is in parts predominantly sandy, in others clayey; it is mainly under timber
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The state as a whole is devoted predominantly to agriculture
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Within its borders or See also:close about them are the centres of total and of improved See also:farm acreage, of total farm values, of See also:gross farm income, of the growth of See also:Indian See also:corn, of See also:wheat, and of oats
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In 1900 agriculture absorbed the labour of 41.3 % of the total working See also:population of the state
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Of the area of the state 77.3 % was
Minerals.—Coal, See also:lead, See also:zinc, clays, See also:building stones and iron are the most important minerals
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See also:Cobalt and See also:nickel are associated with lead in the St Francois See also: Missouri is also the largest producer in the Union of See also:tripoli and of See also:barytes . See also:Copper occurs in various localities, but is of economic importance only in the Ozark uplift; it was first See also:mined in small quantities in 1837 . The value of the copper mined in 1906 (based on smelter returns) was $54,347 . See also:Mineral See also:waters—muriatic, alkaline chalybeate and sulphuric—occur widely . Various mineral paint bases (apart from lead, zinc, baryta and See also:kaolin) are produced in small quantities . Iron, once an extremely important product, has ceased since about 1880 to be significant in the general production of the country . But it is of great importance to the state, nevertheless, and its production has possibilities much beyond See also:present realization . The ore occurs in two forms, haematites and limonites; the specular hematites often being grouped, for See also:practical purposes, into two classes—those occurring in See also:porphyry and those occurring in See also:sandstone . The haematites are found not only in the archean porphyries but in Cambrian limestone and sandstone, and in the sub-Carboniferous formations; while the limonites are confined almost exclusively to the Cambrian . The bedded haematites and limonites have been little exploited . See also:Mining was begun in Iron and See also:Crawford counties in the second See also:decade of the 19th See also:century; at Iron Mountain in 1846, and at Pilot Knob in the next year . Since 188o the output of the state has been falling, and the total production up to 1902 did not exceed 9,000,000 tons of ore; in 1906 the output was 80,910 tons . Iron See also:pyrites, which occurs widely and abundantly, has become of value as material for the preparation of sulphuric See also:acid . The limits of the coal belt have already been defined . The area of the Coal Measures is about 23,000 sq. m., and that of those classed by the National Geological Survey as probably productive is about 14,000 sq. m., or nearly the entire area of the lower measures . The coal is almost wholly bituminous, with very little cannelite . The seams are generally from one to five feet in thickness . See also:Macon, See also:Lafayette and See also:Adair are the leading counties in output; See also:Lexington and Bevier are the leading mining centres . The total output from 184o to 1902 was about 78,500,000 short tons; the annual output first passed 1,000,000 tons in 1876, and 2,000,000 tons in 1882; and from 1901 to 1905 the yearly output, steadily increasing, aver-aged 4,196,688 tons, of a value at the mines of $6,266,154; the output in 1908 was 3,317,315 tons, with a spot value of $5,444,907 . Superficial evidences of natural See also:gas and See also:petroleum are abundant in western and north-western Missouri, but these have not been found in commercially profitable quantities . The total value of natural gas from See also:wells in Missouri in 1908 was $22,592 . A few small oil wells are open near the Kansas line . Both crude oil and natural gas are See also:drawn from Kansas for the See also:supply of Kansas City and other parts of western Missouri . Lead occurs in three areas in southern Missouri . In the first, of which St Francois county is the centre, it occurs generally alone disseminated in Cambrian limestone; in the second, of which the counties immediately south-west of Jefferson City are the centre, it occurs with zinc in reticulated deposits and fissure See also:veins in clays and clastic limestones; and in the third, of which Jasper county is much the most important county, the two metals occur in pockets and See also:joints in the Burlington-See also:Keokuk beds of the sub-Carboniferous: The first is the great lead area, the third the great zinc area; the second is no longer of relative importance . The lead ores are See also:galena and carbonate; the zinc ores, See also:calamine, smithsonite and See also:blende . The mines in the St Francois field were worked by the See also:French from See also:early in the 18th century . The See also:oldest, Mine La Motte (Madison county), discovered in 1715 by De la Motte See also:Cadillac, is still a heavy producer . St Francois county alone produces about nine-tenths the yield of the field; Madison, See also:Washington, Jefferson and See also:Franklin counties furnish most of the See also:remainder. arge quantities of lead are also obtained from the zinc field of the south-west . Both the St Francois and Jasper ores yield from 70 to 75% of See also:metal in final product, and assay even higher . It has been estimated that down to 1893 1,100,000 tons of ore, yielding metal See also:worth $74,000,000, had been taken from the state, fully half of this having been mined in the preceding twenty years . The total output for the state in 1908 was 114,459 tons, valued at $12,134,556; of this 116,531 tons came from the central and south-east field, and of the remainder 15,240 tons from the See also:Webb City—Prosperity See also:camp . Zinc was originally a hindering by-product of lead mining in the south-west, and was thrown away; but it long ago became the See also:chief product in value in this field . The so-called Joplin See also:district " of south-western Missouri and south-eastern Kansas—three-fourths of it being in Missouri—produces nine-tenths of all the zinc mined in the United States . Mining in south-western Missouri began about 1851, but zinc was of no importance in the output until 1872 . In the next See also:thirty-one years the aggreate product was about 3,000,000 tons of ore, worth some See also:Ioo,000,000 . The output from 1894 to 1905 averaged 219,874 tons of ore yearly; in 1908 it was 107,404 tons . The history of the St Francois, See also:Granby and Joplin districts has been sensational . The fortunes of the last have largely revolutionized the conditions and prospects of the south-western counties . See also:Silver is found in connexion with lead and zinc mining; in 1908 the total output was 49,131 OZ., valued at $26,039 . Clays occur in amounts and varieties surpassed by the deposits in very few if any states of the Union . They are in every See also:form from the rare to the common=See also:glass pot clay, See also: |