Commune: Dobrzyń nad Wisłą (pow. lipnowski, woj. kujawsko-pomorskie)
Framework element or context represented:
Stratigraphy of Neogene and Pleistocene deposits.
Primary geological/geomorphological interest:
Profil of Neogene and Pleistocene sediments deformed by glaciotectonics.
Comparative assessment justification:
The Dobrzyń site is a significant example of the Pleistocene stratigraphy, glacitectonic deformations, and landslides.
Protection status and accessibility:
The locality is proposed to protection as the documentary site.
Character of site: Natural outcrop.
Area: 6 ha
Altitude: 100 m a.s.l.
Lithology: coals, sands, silts, clays
Discipline: Stratigraphy of Quaternary, Stratigraphy of Phanerozoic, Tectonics
Process Age: Pleistocene, *all periods
Bedrock Age: Quaternary, Neogene, *all periods
Description of primary interest:
The Dobrzyń exposure is situated within the extent of the Vistulian (Weichselian) Glaciation. Neogene sediments in the vicinity of Dobrzyn were investigated for over 200 years. They occur on the steep right bank of the Vistula river in Dobrzyn. In a cross-section, under a rather thin cover of Quaternary deposits, Pliocene clays and silts, Miocene silts, clays and sands intercalated with brown-coal occur. The origin and age of disturbances were often discussed. Views on the origin of disturbances can be divided into two groups: a tectonic shake which generated sediment flowage in the Neogene basin, and glaciotectonic folding caused by the glacier flow from NE or from NW, along the Vistula valley. There is an extensive literature on the Quaternary and Neogene stratigraphy. The massmovements develop on the slope generated by steep riverside composed of not resistant deposits.
Literature:
BER A. 1968–Quaternary stratigraphy in the vicinity of Dobrzyń on the Vistula. Ada Geol. Pol.. 18: 663-676. BER A. 1999–Preliminary list of the Quaternary geosites in Northern and Central Poland, their age and geological position. Pol. Geol. Inst., Spec. Papers, 2: 77-85 BRYKCZYŃSKI M. 1982–Valley-side glacitectonics in the Warsaw Basin and the Płock Basin (English sum.). Pr. Muz. Ziemi, 35: 3-68. JAROSZEWSKI W. 1961–Utwory antropogeniczne w Dobrzyniu nad Wisłą. Prz. Geol. 9: 192-194. JAROSZEWSKI W. 1963–Young tectonic disturbances at Dobrzyń on the Vistula. Biul. Geol. Wydz. Geol. UW, 3: 263-273. LAMPARSKI Z. 1983–Plejstocen i jego podłoże w północnej części środkowego Powiśla. Stud. Geol. Pol., 76: 6-82. ŁYCZEWSKA J. 1959–Tertiary deposits of Central and Eastern Kujawy (Middle Poland) (English sum.). Biul. Inst. Geol., 130: 41-158. ŁYCZEWSKA J. 1964–Deformacje utworów neogenu i plejstocenu Polski środkowej i zachodniej. Rocz. Pol. Tow. Geol., 34: 115-169. MOJSKI J. E. 1970–Objaśnienia do Szczegółowej mapy geologicznej Polski, arkusz Włocławek (442) 1 : 50 000. Wyd. Geol. Warszawa. SKOMPSKI S. 1969–Stratigraphy of Quaternary deposits in the eastern part of Płock Basin. Biul. Inst. Geol., 220: 175-258. SKOMPSKI S. 1972–Objaśnienia do Szczegółowej mapy geologicznej Polski, arkusz Dobrzyń (443) 1 : 50 000. Wyd. Geol. Warszawa. SKOMPSKI S. 1995–The Vistula River Bank in Dobrzyń - glaciotectonic disturbances. XIV INQUA. Intern. Congr., Quaternary field trips in Central Europe, 1: 204-205. SKOMPSKI S., SŁOWAŃSKI W. 1970–Objaśnienia do Szczegółowej mapy geologicznej Polski, arkusz Płock (444) 1 : 50 000. Wyd. Geol. Warszawa.