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Depositional environments, facies and diagenesis of the Upper Jurassic–Lower Cretaceous carbonate deposits of the Buila-Vânturariþa Massif, Southern Carpathians (Romania)

Pleş G., Bucur I. I., Săsăran E.

Annales Societatis Geologorum Poloniae

2016

Vol. 86, No. 2

165--183

The Buila-Vânturariţa Massif consists of massive Upper Jurassic reef limestones (Kimmeridgian–Tithonian) and Lower Cretaceous (Berriasian–Valanginian, and Barremian–?Lower Aptian) deposits. Besides corals and stromatoporoids, a wide range of micro-encrusters and microbialites has contributed to their development. In this study, the authors describe briefly and interpret the main facies associations and present the microfossil assemblages that are important for age determination. The distribution of facies associations, corroborated with the micropalaeontological content and early diagenetic features, indicate different depositional environments. The carbonate successions show the evolution of the Late Jurassic–Early Cretaceous depositional environments from slope and reef-front to internal-platform sedimentary settings, including peritidal environments in the lowermost Cretaceous. Early diagenesis, represented by synsedimentary cementation in the form of micritization (including cement crusts in the reef microframework), followed by dissolution, cementation and dolomitization in a meteoric regime, and void-filling late cementation during the burial stage.

Environmental changes induced by the development of Ranca resort in a mountainous area

Marinescu I. E., Marinescu E., Boengiu S., Popescu L.

Landform Analysis

2009

Vol. 10

77-84

The paper aims at analyzing the most important environmental aspects generated by the development of a touristic resort within a reference mountainous area of the Parang Mountains. The direct and indirect impact of the touristic activity on the environment is evaluated both by analyzing the spatial evolution of the resort according to the French and Austrian Tyrol patterns, and by the integrated analysis of the negative effects induced by the touristic activity on the natural ecosystems characteristic for the high mountainous area. Using various techniques (for instance the Spatial Planning of the Local Territory, the guide published by WTO, measurements on the 1:25,000 topographic map, satellite images), there the POT and CUT urban indexes were determined, together with some specific indicators for touristic pressure on the environment, such as stress and critical ecosystems. The final goal of mapping the ecologic fragility areas situated along the main directions for the settlement development is to underline the potential environmental changes determined by the touristic capitalization of the region.