The Upper Tisa Valley. Preparatory proposal for Ramsay

Figure 19. Near-surface deposits of the Szatmár-Bereg Plain
Caption: 1 alluvial soil; — 2 sand drift; — 3 silt; — 4 clay; — 5 mud-peat; — 6 sand drift; — 7 loessal
sand; — 8 loess
sediments: gravel and gravelly sand. The depth of the sequence ranges between 50-200
m. In the plain area stretching south of River Tisa Quaternary deposits of various
thickness were formed in a NW-SE direction corresponding with the courses of the
rivers Kraszna, Szamos and Túr, and in an E-W direction corresponding with the
courses of River Tisa and River Latorica. The Tisa-Szamos-Túr plain area was nearly
filled up to the present ground level back in the periglacial Lower Pleistocene. It is
covered by a comparatively thin sequence of layers formed by younger, Pleistocene
and Holocene depositions. Sedimentation may already have started in the Pliocene.
During the Quaternary six or seven layers of gravel accumulated in the trough at the
foot of the mountain and later in the plain so formed, which indicates the periodicity of
the sedimentation as well as the fact that the depression is not young.
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