Stable isotopes as record of climatic changes of Daniglacial in Lithuania

• Autorzy: Gaigalas A. , Pazdur A. , Hałas S. , Pawlyta J. , Kazakauskas V.
• Języki publikacji: EN

Abstrakty

EN

Development of glaciolacustrine basins and varved clay sedimentation in Lithuania are closely connected with the course of ice retreat during Daniglacial time from 16,000 till 13,000 BP. Isotopic composition (delta 13C and delta 18O) of chemogenic carbonaceous samples from glaciolacustrine varved clays, which spread near glacier edge of South-Lithuanian (Balbieriýkis section), Middle-Lithuanian (Girininkai section) and North-Lithuanian (Joniškelis section) Phases of the Baltija (Pomeranian) Stage of Nemunas (Vistulian) Glaciation, has been studied. The obtained stable isotope data well confirm climatic changes of Daniglacial time in Lithuania. The gradual warming of climate is connected with the South-Lithuanian to Middle-Lithuanian and the Middle-Lithuanian to North-Lithuanian Interphasials as well as with the South Lithuanian interoscillations. The Interphasial lacustrine sedimentation with rhythmical lamination of carbonaceous sediments was observed in the middle part of the Balbieriýkis section (at a depth of 3.1-5.9 m). The following climatic changes of Daniglacial time in Lithuania are distinguished: (1) stadial (3000-6000), (2) glaciophasial (500-1000), (3) glaciooscillation (500-1000) years and (1) interstadial (1000-2000), (2) interphasial (250-450), (3) glacio-interoscillation (20-40) years. Regular succession of Daniglacial climatic and sedimentation changes in the local periglacial glaciolacustrine lakes, conditioned by recession of the last Scandinavian ice sheet, was revealed in the glaciolacustrine-lacustrine sediments for the first time.

Słowa kluczowe

EN

stable isotopes; glaciolacustrine sediments; clay; varves; climate changes; phasial; daniglacial; Lithuania

• Wydawca: De Gruyter
• Czasopismo: Geochronometria
• Rocznik: 2001
• Tom: Vol. 20
• Strony: 81--86
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Gaigalas A.

• Department of Geology and Mineralogy, Vilnius University, Čiurlionio 21/27, LT-2009 Vilnius, Lithuania

autor

Pazdur A.

• Department of Radioisotopes, Institute of Physics, Silesian University of Technology, Krzywoustego 2, 44-100 Gliwice, Poland

autor

Hałas S.

• Mass Spectrometry Laboratory, Institute of Physics, Maria Curie Skłodowska University, Plac Marii Curie Skłodowskiej 1, 20-031 Lublin, Poland

autor

Pawlyta J.

• Department of Radioisotopes, Institute of Physics, Silesian University of Technology, Krzywoustego 2, 44-100 Gliwice, Poland

autor

Kazakauskas V.

• Institute of Geology, LT-2009 Vilnius, Lithuania

Bibliografia

• 1. Gaigalas A., 1994: On palaeogeography of Late Pleistocene in the Lithuania. In: Acta Universitatis Nicolai Copernici, Geografia XXVII. Nauki Matematyczno-Przyrodnicze: 183-194.
• 2. Gaigalas A., 2000: Correlation of 14C and OSL dating of Late Pleistocene deposits in Lithuania. Geochronometria 19: 7-12.
• 3. Gudelis V. and Mikaila V., 1960: The largest glacio-lacustrine basins of Lithuania and their significance for geochronology and palaeogeography of the Late-Glacial period. Collectanea Acta Geologica Lithuania: 251-269.
• 4. Kazakauskas V. and Gaigalas A., 2000: On the problem of sedimentation in some large periglacial lakes in Lithuania (in Lithuanian). Geologija 31, Vilnius: 66-78.
• 5. Sinkûnas P. and Jurgaitis A., 1997: Lithogenetic aspects of glacigenic sedimentation investigations (in Lithuanian). Geologja 23, Vilnius: 99-105.
• 6. Raukas A., Âboltinš O. and Gaigalas A., 1993: Main outlines of geology. In: Pleistocene stratigraphy, ice marginal formation and deglaciation of the Baltic States, Tallinn: 7-18.