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CEVENNES (Lat. Cebenna or Gebenna)

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Originally appearing in Volume V05, Page 778 of the 1911 Encyclopedia Britannica.
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CEVENNES (See also:Lat. Cebenna or Gebenna)  , a See also:mountain range of See also:southern See also:France, forming the southern and eastern fringe of the central See also:plateau and See also:part of the See also:watershed between the See also:Atlantic and Mediterranean basins . It consists of a narrow See also:ridge some 320 M. See also:long, with numerous lofty plateaus and secondary ranges branching from it . The See also:northern See also:division of the range, which nowhere exceeds 3320 ft. in height, extends, under the name of the mountains of Charolais, Beaujolais and Lyonnais, from the See also:Col de Longpendu (See also:west of Chalon-sur-See also:Saone) in a southerly direction to the Col de Gier . The central See also:Cevennes, comprising the volcanic See also:chain of Vivarais, incline See also:south-See also:east and extend as far as the See also:Lozere See also:group . The northern portion of this chain forms the Boutieres range . Farther south it includes the Gerbier See also:des Joncs (5089 ft.), the Mont de Mezenc (5755 ft.), the culminating point of the entire range, and the Tanargue group . South of the Mont Lozere, where the Pic Finiels reaches 5584 ft., lies that portion of the rangeto which the name Cevennes is most strictly applied . This region, now embraced in the departments of Lozere and See also:Gard, stretches south to include the Aigoual and Esperou See also:groups . Under various See also:local names (the Garrigues, the mountains of Espinouse and Lacaune) and with numerous offshoots the range extends south-east and then east to the Montague Noire, which runs parallel to the See also:Canal du Midi and comes to an end some 25 M. east of See also:Toulouse . In the south the Cevennes See also:separate the See also:cold and barren tablelands known as the See also:Causses from the sunny region of See also:Languedoc, where the See also:olive, See also:vine and mulberry flourish . Northwards the contrast between the two slopes is less striking . The Cevennes proper are formed by a folded See also:belt of Palaeozoic rocks which lies along the south-east border of the central plateau of France .

Concealed in part by later deposits, this See also:

ancient mountain chain extends from See also:Castelnaudary to the neighbourhood of See also:Valence, where it sinks suddenly beneath the See also:Tertiary and See also:recent deposits of the valley of the See also:Rhone . It is in the Montagne Noire rather than in the Cevennes proper that the structure of the chain has been most fully investigated . All the See also:geological systems from the See also:Cambrian to the Carboniferous are included in the folded belt, and J . Bergeron has shown that the See also:gneiss and schist which See also:form so much of the chain consist, in part at least, of metamorphosed Cambrian beds . The direction of the folds is about N . 6o° E., and the structure is complicated by overthrusting on an extensive See also:scale . The overthrust came from the south-east, and the Palaeozoic beds were crushed and crumpled against the ancient See also:massif of the central plateau . The See also:principal folding took See also:place at the See also:close of the Carboniferous See also:period, and was contemporaneous with that of the old Hercynian chain of See also:Belgium, &c . The See also:Permian and later beds See also:lie unconformably upon the denuded folds, and in the space between the Montagne Noire and the Cevennes proper the folded belt is buried beneath the See also:horizontal See also:Jurassic strata of the Causses . Although the chain was completed in Palaeozoic times, a second folding took place along its south-east margin at the close of the See also:Eocene period . The Secondary and Tertiary beds of the Languedoc were crushed against the central plateau and were frequently overfolded . But by this See also:time the ancient Palaeozoic chain had become a part of the unyielding massif, and the folding did not extend beyond its See also:foot .

As the division between the basins of the See also:

Loire and the See also:Garonne to the west and those of the Saone and Rhone to the east, the Cevennes send many afliuents to those See also:rivers . In the south the See also:Orb, the See also:Herault and the Vidourle are See also:independent rivers flowing to the Golfe du See also:Lion; farther See also:north, the Gard—formed by the See also:union of several streams named Gardon—the Ceze and the See also:Ardeche flow to the Rhone . The Vivarais mountains and the northern Cevennes approach the right See also:banks of the Rhone and Saone closely, and on that See also:side send their See also:waters by way of See also:short torrents to those rivers; on the west side the streams are tributaries of the Loire, which rises at the foot of Mont Mezenc . A short distance to the south on the same side are the See also:sources of the See also:Allier and See also:Lot . The waters of the north-western slope of the southern Cevennes drain into the See also:Tarn either directly or by way of the See also:Aveyron, which rises in the outlying chain of the Levezou, and, in the extreme south, the Agout . The Tarn itself rises on the southern slope of the Mont Lozere . In the Lozere group and the southern Cevennes generally, See also:good pasturage is found, and huge flocks spend the summer there . Silkworm-rearing and the cultivation of peaches, See also:chest-nuts and other fruits are also carried on . In the Vivarais See also:cattle are reared, while on the slopes of the Beaujolais excellent wines are grown . The See also:chief See also:historical event in the See also:history of the Cevennes is the revolt of the See also:Camisards in the See also:early years of the 18th See also:century (see CAMISARDS) .

End of Article: CEVENNES (Lat. Cebenna or Gebenna)
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