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  • 标题:LEVELLED SURFACES FROM THE MOUNTAIN SECTOR OF THE GILORT DRAINAGE AREA SUPRAFE.ELE DE NIVELARE DIN SECTORUL MONTAN AL BAZINULUI GILORT
  • 本地全文:下载
  • 作者:Emil MARINESCU
  • 期刊名称:Geographical Phorum
  • 印刷版ISSN:1583-1523
  • 出版年度:2007
  • 卷号:6
  • 页码:71-71
  • 出版社:Universitaria publishing house, Craiova
  • 摘要:The complex levelled surfaces identified and analysed in this study are: the Carpathian pediplain (Bor.scu surface or high peaks platform ¨C Emm. de Martonne, 1907) with two levels within the Parang (1,900 ¨C 2,200 m and 1,700 ¨C 1,900 m); the surface of the Carpathian mean summits (Rau .es surface ¨C Emm. de Martonne, 1907) with two levels within the Parang (1,500 ¨C 1,600 m and 1,350-1,430 m) and the outer Carpathian surface (Gornovi.a surface or the Pliocene surface ¨C Emm. de Martonne, 1907) with many local levels on the southern slope of the Parang (1,150 ¨C 1,250 m; 1,000 ¨C 1,100 m; 800 ¨C 900 m; 700 ¨C 750 m). The Carpathian pediplain is better preserved on the eastern side of the main summit of the Parang, where it appears as wavy interfluves (the watershed between the Gilort and Latori.a rivers). Fragments of this pediplain also appear between Iezeru and C.rbunele Peaks and between Ple.coaia and Mohoru Peaks, within the very large saddle located between them. The Rau .es I level is better preserved in the South of the Parang, on the interfluve between the Gilort and the Galbenu rivers. This levelled surface, the most extensive within the Parang Mountains, covers a length of about 14 km and displays widths oscillating between 500 and 1,300 m. At this level, between Corne.u Mic and Corne.ul Mare Peaks, there is located Ranca resort (1,600 m), which is gradually developing. The alpine road Novaci-Sebe. also passes the area. A distinct feature of this levelled surface in the South of the massif is the breach of slope, which sometimes reaches a 300 m difference of level and develops between the respective surface and the first Gornovi.a level in the South. Within this steep area, there also develop the heads of a generation of younger valleys. The contact between the harder rocks (granite) from the North and the softer ones (the schists of Lainici-P.iu. series) from the South amplified the respective breach of slope (initially of tectonic nature). Northward, the contact with Bor.scu levelled surface is also steep along the alignment of the fundamental fault that crosses at the base (South) of the main summit. Gornovi.a levelled surface displays numerous levels within the Gilort basin: 700-750 m; 800-900 m; 1,000-1,100 m; 1,150-1,250 m. We consider they are specific only to the southern slope of the Parang (they develop strictly locally) due to the features of the region (local time and space variability of the modeling regime). The Sarmatian transgression settled certain deposits; the further modeling raised and made them appear as thresholds where the lower level of Gornovi.a surface developed, the ones located upper belonging to the Danubian Autochthonous granitoids. We consider that the 1,300-1,350 m step belong to Rau .es II level. It is locally deformed on the southern slope of the anticline developed between Muncel and Z.noaga Peaks. Although it could not be clearly established the age of the dislocations, that tectonically fragmented the Rau .es complex, these dislocations and the ones that followed obviously affected the surfaces which were then forming. The lithological differences partially explain the altitudinal differences, as Rau .es II level develops at the contact between the crystalline schists and the intrusive granitoids, formations that behave differently to erosion.
  • 关键词:levelled surfaces, Sarmatian trangression, Bor.scu, Rau-.es, Gornovi.a, the Parang, the Gilort
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