A magyarbagói tőzegmohaláp negyedidőszak végi környezettörténete
The mires and peatlands not only carry information about their environment but also reveal geological and cultural history facts and eras after their formation. The Bottomless Lake sphagnum peat bog in Bágáu, Romania carries important historical environmental and paleoclimatic information from the p...
Magyarok a Kárpát-medencében 4. : régmúlt és jelen 27
|Kulcsszavak:||Környezettörténet - Erdély, Lápok - geológia, Tőzeg - geológia|
|Summary:||The mires and peatlands not only carry information about their environment but also reveal geological and cultural history facts and eras after their formation. The Bottomless Lake sphagnum peat bog in Bágáu, Romania carries important historical environmental and paleoclimatic information from the past 8600 years, which is why the primary purpose of the study is to study the evolution and transformation of the sediments developed at the end of the Quaternary. The accumulation of the peat bog depends on both the climatic effects and the human activity nearby. Disturbing the forest vegetation fundamentally influences humidity and the amount and type of sediment entering the catchment basin by erosion. The peat bog is formed on a carbonate bedrock in a closed forest with a hilly position and a valley within it. We used a Russian peat corer to extract 8.6 meters of core from the middle of the bog. The field stratigraphy description was made with the help of the Munsell colour chart and the Troels-Smith classification. The analyses used were loss on ignition method, magnetic susceptibility analysis, grain size analysis, and water-soluble geochemical analysis. The bottom two meters are heavily bedrock-like, which is closed by an intense clay deposit. The result of the excellent environmental condition is that it has an average organic matter content of 80-95%, and the bog is regenerated after every erosion event. During the Bronze Age and the Árpád Age, the water level of the bog increased significantly during the rainy and cold period. Therefore, two layers of water formed, and after hundreds of years, a peat mat formed on top of it and continued the accumulation of peat.|
|ISBN:||9 78-963-89 724-9-1|