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Volume X |

The Landforms of the Făgărăș Mountains (The Argeș Mountain Catchment): Analysis of the Related Dynamic Processes

Abstract: The present configuration of the Făgăraş Mountains is a snapshot of the long-term evolution that brought about significant alterations of the landscape, and especially of the relief, which has acquired different features depending on the intensity of the relationship between the exogenous and endogenous agents. Relief shaping in the study area is controlled by the orographic and climatic features. However, the climate of the high and middle-height mountains is the main cause that determines the mechanism, the intensity and the spatial distribution of the shaping processes. The massiveness and the considerable height of the Făgăraş Mountains, which exceed 2500 m altitude (Moldoveanu peak 2544 m, Negoiu peak 2535 m, Lespezi peak 2522 m, Vanatoarea lui Buteanu peak 2507 m, etc.), are responsible for the vertical zonation of climate and vegetation. The study area lies in the middle of the Southern Carpathians range, on the southern slope of the Făgăraş Mountains (the Arges mountain catchment). The scale of investigated phenomena and the frequency of their occurrence allow us to distinguish two types of different phenomena on the basis of their geological or geomorphological origin. Each slope section was analyzed by using a series of parameters considered as being stable from the morphodynamic point of view.

Volume IX |

The Landscapes Differentiations in the Prahova Sector of the Bucegi Mountains

Abstract: The physiognomic complexity as the main characteristics of the Bucegi Mountains landscape is the result of lithology, structure, tectonics and high altitude, which led to the vertical zoning of modelling conditions. There can be separated: the landscape of erosion outliers and the structural plateaus from the alpine area, the landscape of Prahova scarp and that of the plains at the Bucegi mountain feet. Up to about 2200 m, the landscape of erosion outliers and structural plateaus was mostly affected by human activities, mainly the tourism and uncontrolled grazing. The landscape of the Prahova scarp of the Bucegi is notable by high touristic anthropization on the slopes of the Vârful cu Dor – Furnica – Piatra Arsă mountains, neighbouring Sinaia, where there are frequent degradations of the roads and paths improperly located and maintained. The Bucegi slope northwards of Piciorul Pietrei Arse still preserves the natural landscapes in dynamic equilibrium (which possess a great tourist and alpinist potential). At the scarp foot, following the modelling of the Cretaceous flysch and sedimentation of large talus material, there resulted a relief with smooth field – plai (Plaiul Fânului,Plaiul Coştila, Munticelu, Plaiul Stânei, Plaiul Peleşului, Plaiul Furnica) – rounded interfluves with a slope below 300, compared to those over 300 (often over 500 within the scarp.

Volume VIII |

Notions Regarding the Relation between Landforms and Soil in the Eastern and North-Eastern Region of the Romanian Plain

Abstract: The present study aims at rendering the way the geomorphologic features of the eastern and northeastern regions of the Romanian Plain, influenced by the subsidence movements, is reflected in the soil cover. For its achievement, there was used Romania Soil Map, 1:200 000 scale and field mapping, inventorying the soil cover at the level of class, type and, partially, subtype. In the mentioned area located between the Argeş and the Siret, besides the soils (chernozems, phaeozems, reddish preluvosols) the genesis of which is triggered by the bioclimatic conditions characteristic to steppe, forest steppe and nemoral zone, there also develop soils with azonal and intrazonal character. Thus, the presence of large floodplains imposed the noticeable extension of the soils developed on recent fluviatile deposits (alluviosols). At the same time, the altitude and reduced relief intensity impose an increased phreatic level, which is mineralized in many areas and, consequently, certain soils are affected by hydromorphism (Gleysols and gleyic subtypes) and salinization (solonchaks and salinic subtypes, solonetz and alkalic subtypes). Another characteristic of the studied region is linked to the presence of certain soils buried under alluvial and proluvial deposits. The calculation of the topographical-pedogenetic index (Florea, 1997), as a rapport between non-zonal and zonal soils, emphasizes the pregnant influence of the local conditions from the Buzău and the Lower Siret subsidence plains compared to a series of higher plains (Râmnic, Galaţi).