Ролята на палеоклимата за развитието на погребания карст в Русенско и Разградско

Кръстев, Т. Ролята на палеоклимата за развитието на погребания карст в Русенско и Разградско

Krastev, T. The significance of the paleoclimate for the development of the buried karst in Russe and Razgrad regions

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THE SIGNIFICANCE OF THE PALEOCLIMATE FOR THE DEVELOPMENT OF THE BURIED KARST IN RUSSE AND RAZGRAD REGIONS

Todor Krastev

Summary

The author emphasizes that the climatic factor plays a foremost part of the morphogenetic karst variety while the other conditions are equal. The established buried karst by drilling in Russe and Razgrad regions filed up with kaolin sands, in connection with its morphogenesis, is related to the karst moulded in tropical climatic conditions. It turns to be a relict for the contemporary physico-geographical and climatic conditions of the region.

Based on investigations the author points out that the formation of the huried karst releif in Russe and Razgrad regions, characterized as а tropical karst, had been carried out at the end of the apt and the beginning of the alb.

At that time the climate of the region has been damp, tropical with two raining seasons changed with dry periods of the year. The thermic regime has been characterized with average month temperatures of 25-28°C. The annual quantity of the zenithal rainfall has been 1000 -2000 mm.

The decomposed remains of the exuberant tropical vegetation, a bask source of CO₂ (in statu nascendi) as well as a number of biogen acids, have an important significance over the dynamics of the corosion process.

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