Radiocarbon and optically stimulated luminescence dates, together with bio- and lithostratigraphical data, revealed an interval of ice-free conditions between 72.2 OSL and 33.8 cal 14C ka BP at the Kileshino site (Valdaj Upland, Russia), corresponding to Marine Isotope Stages (MIS) 4 and 3. Limnic sedimentation conditions occurred at the Kileshino site between 57.5 OSL and 33.8 cal 14C ka BP, corresponding to MIS 3 ‘megainterstadial’ in European Russia (Oerel to Hengelo interstadials in Central Europe). During the last glaciation, a sedimentary unit of laminated silt and sand of fluvial origin was redeposited at that site due to expansion of the Scandinavian Ice Sheet (SIS). This unit expresses fluvial sedimentation conditions NW of Kileshino between 72.2 and 40.8 OSL ka. All dates together suggest that the Kileshino site was ice-free between 72.2 OSL and 33.8 cal 14C ka BP. The sedimentary unit of laminated silt and sand was redeposited at the Kileshino site during the last SIS not before 33.8 cal 14C ka BP, according to previous studies, possibly at its maximum extent between 19.1 cal 14C BP and 18 OSL ka. Only one till, younger than 72.2 ka, was found from the Kileshino outcrop. It can be concluded that the SIS reached this area only once during the last 72.2 ka – in the late Valdaj (Weichselian), after 33.8 cal 14C ka BP. The expansion of the SIS to the study area between 115 and 58 ka could be neither proved nor disproved as there is no chronological information about the time between 115 and 72.2 ka.
Arslanov, Kh. A. 1987. Radiouglerod: geokhimiya i geokhronologiya [Radiocarbon: Geochemistry and Geochronology]. University of Leningrad, Leningrad, 300 pp. [in Russian].
Arslanov, Kh. A. 1993. Late Pleistocene geochronology of European Russia. Radiocarbon, 35, 421–427.
Bronk Ramsey, C. 2009. Bayesian analysis of radiocarbon dates. Radiocarbon, 51, 337–360.
Chebotareva, N. S. & Makarycheva, I. A. 1982. Geochronology of environmental evolution within the glaciated area of Eastern Europe during the Valday epoch. In Paleogeografiya Evropy za poslednie sto tysyach let [Paleogeography of Europe in the Last 100,000 Years] (Gerasimov, I. P. & Velichko, A. A., eds), pp. 36–48. Nauka, Moscow [in Russian].
Demidov, I. N., Houmark-Nielsen, M., Kjær, K. H., Larsen, E., Lyså, A., Funder, S., Lunkka, J. P. & Saarnisto, M. 2004. Valdaian glacial maxima in Arkhangelsk district of northwestern Russia. In Quaternary Glaciations: Extent and Chronology, Part I: Europe (Ehlers, J. & Gibbard, P. L., eds), pp. 321–335. Elsevier, Amsterdam.
http://dx.doi.org/10.1016/S1571-0866(04)80082-4
Demidov, I. N., Houmark-Nielsen, M., Kjær, K. H. & Larsen, E. 2006. The last Scandinavian Ice Sheet in northwestern Russia: ice flow patterns and decay dynamics. Boreas, 35, 425–443.
http://dx.doi.org/10.1080/03009480600781883
Ehlers, J. & Gibbard, P. L. 2004. Quaternary Glaciations Extent and Chronology: Europe, Part I. Elsevier, Amsterdam, 475 pp.
Eyles, N., Eyles, C. H. & Miall, A. D. 1983. Lithofacies types and vertical profile models; an alternative approach to the description and environmental interpretation of glacial diamict and diamictite sequences. Sedimentology, 30, 395–410.
http://dx.doi.org/10.1111/j.1365-3091.1983.tb00679.x
Giterman, R. E., Kuprina, N. P. & Zhantser, E. V. 1975. O mikulinskom vozraste mezhlednikovykh sloev u d. Kileshino (verkhnyaya Volga) [About Mikulino interglacial sediment layers near the Kileshino village (Upper Volga)]. Bulletin of Commission for Quaternary Research, 44, 84–89 [in Russian].
Guobyte, R. & Satkunas, J. 2011. Pleistocene glaciations in Lithuania. In Developments in Quaternary Science 15 (Ehlers, J., Gibbard, P. L. & Hughes, P. D., eds), pp. 231–246. Elsevier, Amsterdam.
Hua, Q. 2009. Radiocarbon: a chronological tool for the recent past. Quaternary Geochronology, 4, 378–390.
http://dx.doi.org/10.1016/j.quageo.2009.03.006
Kalm, V. 2012. Ice-flow pattern and extent of the last Scandinavian Ice Sheet southeast of the Baltic Sea. Quaternary Science Reviews, 44, 51–59.
http://dx.doi.org/10.1016/j.quascirev.2010.01.019
Katz, N. Y., Katz, S. V. & Kipiani, M. G. 1965. Atlas i opredelitel¢ plodov i semyan vstrechayushchikhsya v chetvertichnykh otlozheniyakh SSSR [Atlas and Keys of Fruits and Seeds Occurring in the Quaternary Deposits of the U.S.S.R.]. Nauka, Moscow, 366 pp. [in Russian].
Katz, N. Y., Katz, S. V. & Skobeeva, E. I. 1977. Atlas rastitel¢nykh ostatkov v torfakh [Atlas of Plant Remains in Peat]. Nedra, Moscow, 372 pp. [in Russian].
Krüger, J. & Kjær, K. H. 1999. A data for field description and genetic interpretation of glacial diamict and associated sediments – with examples from Greenland, Iceland and Denmark. Boreas, 28, 386–402.
http://dx.doi.org/10.1111/j.1502-3885.1999.tb00228.x
Larsen, E., Lyså, A., Demidov, I., Funder, S., Houmark-Nielsen, M., Kjær, K. H. & Murray, A. S. 1999. Age and extent of the Scandinavian ice sheet in northwest Russia. Boreas, 28, 115–132.
http://dx.doi.org/10.1080/030094899421209
Lasberg, K. & Kalm, V. 2013. Chronology of Late Weichselian glaciation in the western part of the East European Plain. Boreas, 42, 995–1007.
Lunkka, J. P., Saarnisto, M., Gey, V. & Demidov, I. 2001. Extent and age of the Last Glacial Maximum in the southeastern sector of the Scandinavian Ice Sheet. Global and Planetary Change, 31, 407–425.
http://dx.doi.org/10.1016/S0921-8181(01)00132-1
Malakhovskij, D. B. & Spiridonova, A. E. 1981. O nizhnevaldajskikh otlozheniyakh nekotorykh voprosakh palaeogeografii poslednego oledeneniya Severo-Zapada Russkoj ravniny [About Early-Valday deposits and some questions about palaeogeography of the last glaciation in the northwest of the East European Plain]. In Geologiya plejstotsena Severo-Zapada SSSR. Apatity [Pleistocene Geology of NW of European USSR. Apatity] (Evzerov, V. Ya., ed.), pp. 62–71. Academy of Sciences of the USSR, Kola [in Russian].
Marks, L. 2010. Timing of the Late Vistualian (Weichselian) glacial phases in Poland. Quaternary Science Reviews, 44, 81–88.
http://dx.doi.org/10.1016/j.quascirev.2010.08.008
Munsell Color. 1998. Munsell Soil Color Charts, Revised Washable Edition. GretagMacbeth, New Windsor, NY.
Murray, A. & Wintle, A. 2000. Luminescence dating of quartz using an improved single-aliquot regenerative-dose protocol. Radiation Measurements, 32, 57–73.
http://dx.doi.org/10.1016/S1350-4487(99)00253-X
Reimer, P. J., Baillie, M. G. L., Bard, E., Bayliss, A., Beck, J. W., Blackwell, P. G., Bronk Ramsey, C., Buck, C. E., Burr, G. S., Edwards, R. L., Friedrich, M., Grootes, P. M., Guilderson, T. P., Hajdas, I., Heaton, T. J., Hogg, A. G., Hughen, K. A., Kaiser, K. F., Kromer, B., McCormac, F. G., Manning, S. W., Reimer, R. W., Richards, D. A., Southon, J. R., Talamo, S., Turney, C. S. M., van der Plicht, J. & Weyhenmeyer, C. E. 2009. IntCal09 and Marine09 radiocarbon age calibration curves, 0–50,000 years cal BP. Radiocarbon, 51(4), 1111–1150.
Rinterknecht, V. R., Pavlovskaya, I. E., Clark, P. U., Raisbeck, G., Yiou, F. & Brook, E. J. 2007. Timing of the last deglaciation in Belarus. Boreas, 36, 307–313.
http://dx.doi.org/10.1111/j.1502-3885.2007.tb01252.x
Rinterknecht, V. R., Bitinas, A., Clark, P. U., Raisbeck, G. M., Yiou, F. & Brook, E. J. 2008. Timing of the last deglaciation in Lithuania. Boreas, 37, 426–433.
http://dx.doi.org/10.1111/j.1502-3885.2008.00027.x
Schoch, W. H., Pawlik, B. & Schweingruber, F. H. 1988. Botanische makroreste. P. Haupt, Bern & Stuttgart, 205 pp.
Velichko, A. A., Faustova, M. A., Gribchenko, Yu. N., Pisareva, V. V. & Sudakova, N. G. 2004. Glaciations of the East European Plain – distribution and chronology. In Quaternary Glaciations – Extent and Chronology, Part I: Europe (Ehlers, J. & Gibbard, P. L., eds), pp. 337–354. Elsevier, Amsterdam.
http://dx.doi.org/10.1016/S1571-0866(04)80083-6
Velichko, A. A., Faustova, M. A., Pisareva, V. V., Gribchenko, Yu. N., Sudakova, N. G. & Lavrentiev, N. V. 2011. Glaciations of the East European Plain: distribution and chronology. In Developments in Quaternary Science 15 (Ehlers, J., Gibbard, P. L. & Hughes, P. D., eds), pp. 337–359. Elsevier, Amsterdam.
Vigdorchik, M., Zarrina, E., Krasnov, I. & Auslender, V. 1974. Late Pleistocene. In Geokhronologiya SSSR 3. Novejshij etap [Geochronology of the USSR 3, The Latest Phase] (Zubakov, V. A., ed.), pp. 55–75. Nedra, Leningrad [in Russian].
Wysota, W., Molewski, P. & Sokołowski, R. J. 2009. Record of Vistula ice lobe advances in the Late Weichselian glacial sequence in north-central Poland. Quaternary International, 207(1–2), 26–41.
http://dx.doi.org/10.1016/j.quaint.2008.12.015
Zarrina, E. P. 1991. Chetvertichnye otlozheniya severo-zapadnykh i tsentral¢nykh rajonov Évropejskoj chasti SSSR [Quaternary Deposits of the Northwest and Central Regions of the European Part of the USSR]. Nedra, USSR Ministry of Geology, Leningrad, 127 pp. [in Russian].
Zimenkov, O. I. 1989. Vremya kulminatsii poozerskogo oledeneniya na territorii Belorusii [The timing of the Poozerian Glaciation maximum in the territory of Belarus]. In Novoe v izuchenii kainozojskikh otlozhenij Belorusii i smezhnykh oblastej [New in the Study of Cenozoic Sediments of Belarus and Adjacent Regions] (Matveev, A. V., ed.), pp. 30–45. Nauka i tekhnika, Minsk [in Russian].
Zubakov, V. A. 1974. Pozdnij pliotsen – chetvertichnyj period [Late Pliocene – Quaternary]. In Geokhronologiya SSSR 3. Novejshij etap [Geochronology of the USSR 3, The Latest Phase] (Zubakov, V. A., ed.), pp. 44–84. Nedra, Leningrad [in Russian].
