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2 Geological Quarterly

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Comparison of diatom successions from Mazovian (Poland) and Alexandrian (Belarus) lacustrine interglacial deposits

Marciniak B., Khursevich G. K.

Geological Quarterly

2002

Vol. 46, No 1

59-68

Comparative analysis of two profiles (Gvoznitsa, Malorita district, southwestern Belarus and Krępiec, Lublin Upland, eastern Poland) of Alexandrian and/or Mazovian (=Likhvinian, Holsteinian) age shows different diatom successions which are correlated with pollen data. Various species of Cyclotella, Stephanodiscus and Aulacoseira predominate at Gvoznitsa, while the diatom flora at Krępiec is more diverse and includes also Synedra, Asterionella, and Fragilaria taxa. Certain apparently extinct taxa of Cyclotella (C. comta var. lichvinensis (Jousé) Loginova, C. comta var. pliocaenica Krasske, C. temperiana (Loginova) Loginova, C. michiganiana var. parvula Loginova (C. parvula Loginova), are typical of the Mazovian and/or Alexandrian Interglacial.

The age of the oldest Scandinavian glaciations in mid-eastern Poland and southwestern Belarus

Lindner L., Marciniak B., Sanko A. F., Khursevich G. K.

Geological Quarterly

2001

Vol. 45, No 4

373-396

Analysis of type localities of Pleistocene deposits from mid-eastern Poland (Kozi Grzbiet, Łuków, Biała Podlaska and Wilczyn) and southwestern Belarus (Smolarka and Postolovo) has provided a new view on the age, limits and correlation of the oldest Scandinavian glaciations in the area. Integration of palaeontological data with determination of the Brunhes/Matuyama boundary (780 ka) at Kozi Grzbiet and Smolarka suggests that the first glaciation (Narevian) preceded this boundary and had a slightly smaller extent in SW Belarus than hitherto considered. The second glaciation (Nidanian) occurred slightly above or at this palaeomagnetic boundary. In Poland it is the first South Polish Glaciation, a till of which can be traced as far as the Holy Cross Mts. In SW Belarus it is represented by a till to the south of Brest and Bereza, and connected there with the oldest glaciation.