| Abstract: | ![]()
Fluvial terraces in mountain territories and granulometric cycles in fluvial sediment complexes show 300–400 m uplifts in mountain regions and about the same sized subsidences in major East-Central European basins during the Quaternary (−2.4 Ma). The vertical movements are not at all regular and equal in the mountains nor in the great basins. The number of the terraces is different in the valleys and their mutual proportions also differ. Similarly, some local Quaternary basins were developed deeper in the peripheries of the large basins while the central parts are shallow. There are also some stable blocks between the mountains and the lowlands, which did not move essentially during the last two and a half million years.The course and velocity of Pliocene and Quaternary subsidence were proved in a local sub-basin of the Carpathian mountain arch by paleomagnetic measurements of cores from two deep boreholes. In the Körös Basin, filled with fine-grained fluvial sediment, the sedimentation rate was 0.16–0.19 mm/y in the last 700.000 years; 0.15–0.16 mm/y during the proceding one million years; and 0.22–0.28 mm/y during the Pliocene (from −5.2 to −2.4 Ma).In sub-basins filled with coarse-grained sediments, the sedimentation rate was 0.3–0.4 mm/y during the Quaternary. |
