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FLYSCH

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Originally appearing in Volume V10, Page 587 of the 1911 Encyclopedia Britannica.
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FLYSCH , in See also:

geology, a remarkable formation, composed mainly of sandstones, soft marls and sandy shales found extending from S. W. See also:Switzerland eastward along the See also:northern Alpine See also:zone to the See also:Vienna See also:basin, whence it may be followed See also:round the northern flanks of the Carpathians into the See also:Balkan See also:peninsula. It is represented in the See also:Pyrenees, the See also:Apennines, the See also:Caucasus and extends into See also:Asia; similar flysch-like deposits are related to the Himalayas as the See also:European formations are to the See also:Alps. The Flysch is not of the same See also:age in every See also:place; thus in the western parts of Switzerland the See also:oldest portions probably belong to the See also:Eocene See also:period, but the See also:principal development is of Oligocene age; as it is traced eastward we find in the See also:east Alps that it descends into the upper Cretaceous, and in the Vienna region and the Carpathians it contains intercalations which clearly indicate a See also:lower Cretaceous See also:horizon for the lower parts. It appears indeed that this type of formation was in progress of deposition at one point or another in the regions enumerated above from See also:Jurassic to See also:late See also:Tertiary times. The See also:absence of fossils from enormous thicknesses of Flysch makes the correlation with other formations difficult; often the only indications of organisms are the abundant markings supposed to represent See also:Algae (Chondrites, &c.), which have given rise to the See also:term " Hieroglyphic-See also:sandstone." The most noteworthy exceptions are perhaps the Oligocene See also:fish-See also:bed of See also:Glarus, the Eocene nummulitic beds in See also:Calabria, and the Aptychus beds of Waidhofen. See also:Local phases of the Flysch have received See also:special names; it is the " Vienna " or " Carpathian " sandstone of those regions; the " macigno " (a soft sandstone with calcareous See also:cement) of the Maritime Alps and Apennines; the " scagliose " (scaly See also:clays) and " alberese " (limestones) of the same places are portions of this formation. The gris de Menton, the gris d'Annot of the Basses Alps, and the gris d'See also:Embrun of Chaillot appear in Switzer-See also:land as the gris de Taveyannaz. At several places the upper layers of the Flysch are See also:iron-stained, as in the region of Leman and at the See also:foot of the Dent du Midi; it is then styled the " Red-Flysch." Lenticular intercalations of See also:gabbro, See also:diabase, &c., occur in the Flysch in Calabria on the Pyrenees. Large See also:exotic blocks of See also:granite, See also:gneiss and other crystalline rocks in coarse conglomerates are found near Vienna, near Sonthofen in See also:Bavaria,nearLakeThun (See also:Wild Flysch) and at other points, which have been variously regarded as indications of glaciation or of coastal conditions. FOtA (pronounced Fhwtcha), a See also:town of Bosnia, situated at the confluence of the Drina and Cehotina See also:rivers, and encircled by wooded mountains.

Pop. (1895) 4217. The town is the See also:

head-quarters of a thriving See also:industry in See also:silver See also:filigree-See also:work and inlaid weapons, for which it was famous. With its territories enclosed by the frontiers of See also:Montenegro and Novi Bazar, Foca, then known as Chocha, was the See also:scene of almost incessant border warfare during the See also:middle ages. No monuments of this period are See also:left except the Bogomil cemeteries, and the beautiful mosques, which are the most See also:ancient in Bosnia. The three adjoining towns of Foca, Gorakda and Ustikolina were trading-stations of the Ragusans in the 14th See also:century, if not earlier. In the 16th century, Benedetto Ramberti, See also:ambassador from See also:Venice to the See also:Porte, described the town, in his Libri Tre delle Cose dei Turchi, as Cozza, " a large See also:settlement, with See also:good houses in See also:Turkish See also:style, and many shops and merchants. Here dwells the See also:governor of Herzegovina, whose authority extends over the whole of See also:Servia.

End of Article: FLYSCH

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