期刊名称：Annales Universitatis Mariae Curie-Skodowska. Sectio B, Geographia, Geologia, Mineralogia et Petrographia
印刷版ISSN：0137-2025
出版年度：2007
卷号：LXII
出版社：Maria Curie-Sklodowska University, Lublin
摘要：Based on the detailed studies of the Zakłodzie 1, Zakłodzie 2, and Sąsiadka loess profiles, the present stratigraphic scheme has been correlated with the scheme published by Malinowski (1964) for the loesses in the Wieprz, Por, and Gorajec interfluve areas. The following facts have been found (Table 2).
The rendzina soil, older than glacial deposits, should be related to the interglacial preceding the Sanian 2 Glaciation, i.e. to the Ferdynandowian Interglacial (GJ4?). The soil occurring on till is correlated with the Mazovian Interglacial, so it probably corresponds to the soil denoted as GJ3b, which usually develops on till from the Sanian 2 Glaciation in the neighbouring areas of the Lublin Upland.
The loess of the level I (in the scheme by J. Malinowski) corresponds to the oldest loess 1 (LN1) from the Liwiecian Glaciation, dated at 360 ka BP in the Zakłodzie 2 profile. Grain size distribution of this loess occurring in interfluve positions is characterized by the following mean granulometric indices: Mz=6.75 phi (=0.0093 mm),σ1=2.24, Sk1=0.36, KG=1.18. The paleosol developed on the LN1 loess is the GJ3a soil from the Zbójnian Interglacial. In some profiles where the Odranian loesses are considerably denuded, the pedogenesis of the Lublinian Interglacial resulted in the formation of polygenetic complexes of paleosols, in which there are preserved the superimposed features of interglacial pedogeneses of various ages, e.g. GJ2+GJ3a.
The loess of the level II contains loess units corresponding to the Odranian Glaciation (lowest + lower + middle older loess) and the Wartanian Glaciation (upper older loess). In high terrace positions, this loess is characterized by the following mean granulometric indices: Mz=5.98 phi (=0.0158 mm), σ1=1.84, Sk1=0.30, KG=1.48. In interfluve positions, its mean grain diameter is considerably smaller, and sorting weaker as is indicated by the following indices: Mz=6.34 phi (=0.0123 mm), σ1=2.03, Sk1=0.32, KG=1.32. In terms of age and facies this deposit corresponds to the Dryas silts occurring in valleys over the ice-dammed deposits of the Sanian 2 Glaciation. Forest paleosol found on the loesses of the level II developed in the Eemian Interglacial; it is the GJ1 soil.
The loess of the level III corresponds to the lower younger loess (LMd) from the lower Plenivistulian. In the Sąsiadka-rampart profile this loess fills an ice wedge cast cutting the Eemian soil. Interstadial gley paleosol (Gi/LMd) formed on its top. In the Sąsiadka profile this loess contains 41-43% of loess fraction 0.05-0.02 mm. Its distinctive feature is a high content of free iron (2.25-2.65%). According to Malinowski (1964), the stratigraphic equivalent of this loess are the so-called banded sands, which occur commonly in valleys above the loess of the level II. The loess of the level III occurring in interfluve positions is characterized by the following mean granulometric indices: Mz=6.26 phi (=0.0130 mm), σ1=1.91, Sk1=0.32, KG=1.45.
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