The rank of climatic oscillations during MIS 11c (OHO and YHO) and post-interglacial cooling during MIS 11b and MIS 11a in eastern Poland

Abstract

The rank of cli ma tic os cil la tions dur ing MIS 11c (OHO and YHO) and post-inter gla cial cool ing dur ing MIS 11b and MIS 11a in east ern Po land. Geo log i cal Quar terly, 63 (2): 375-394, doi: 10.7306/gq.1470 As so ci ate Ed i tor-Wojciech Granoszewski Lac us trine sed i ments rep re sent ing Ma rine Iso tope Stage 11 (MIS 11) were found in Hermanów (SE Po land) in a pres ent-day closed de pres sion un der a thin cover of Weichselian and Ho lo cene de pos its (1.4 m). These sed i ments filled a palaeolake cre ated as a re sult of melt ing of a dead-ice block at the end of MIS 12. Geo log i cal re search has ex cluded the pres ence of an ice sheet dur ing MIS 12 in this area. The lobe of the ice sheet of this gla ci ation was lo cated sev eral kilo metres to the west of Hermanów. The palaeolake was part of a larger palaeolakeland in south east ern Po land, formed dur ing MIS 11. The palaeomorphology of this inter gla cial is ev i dent in the con tem po rary re lief of the area and the out line of the lakes cor responds to the pat tern of the closed palaeodepressions. Based on the re cord of sed i ments from Hermanów, a new per spective re gard ing the sub-di vi sion of MIS 11 is pre sented. Two re gres sive phases are ob served in the Holsteinian Inter gla cial (MIS 11c)-OHO and YHO. The sub se quent substages with five cold fluc tu a tions ac cord ing to the new est strati graphic standards should be as signed to MIS 11b with a very clear cool ing and a slightly warmer MIS 11a. Car bon iso to pic com po si tion of or ganic mat ter cor rob o rates geo log i cal and en vi ron men tal anal y sis. The iso to pic com po si tion sug gests two cool ing pe ri ods: OHO and MIS 11b. Sta ble cli ma tic con di tions with lit tle tem per a ture fluc tu a tions per sisted be tween the cool ing pe ri ods. Key words: substages of MIS 11, Mazovian/Holsteinian Inter gla cial, MIS 12 and MIS 10 gla ci ation range, palaeoclimate changes, E Po land palaeolakeland, Car bon iso tope.

The maximum extent of the Odranian Glaciation (Saalian, MIS 6) in the South Podlasie Lowland (SE Poland) in the light of sites with lacustrine deposits of the Mazovian Interglacial

“…Sites with Mazovian Interglacial sediments record the presence of paleolakes that developed after the Saanian 2 Glaciation (Elsterian, MIS 12; Żarski 2008, 2009; Żarski et al 2009a) in depressions for med after melted-out dead-ice blocks (Małek and Pidek 2007;Pidek et al 2011;Hrynowiecka et al 2019;Górecki et al 2022). In south-eastern Poland, most Mazovian Interglacial deposits accumulated in small basins located on the surface of fossil moraine plateaus or glaciofluvial plains from the Saanian 2 Glaciation.…”

“…The second region in the Southern Podlasie Lowland with a documented Mazovian palaeolakeland is located in its south-western part -in the vicinity of Łuków, Kock and Wola Okrzejska within the Łuków Plain and in the western part of the Żelechów Heights (Żarski et al 2005a, b, 2009aMałek and Pidek 2007;Pidek et al 2011;Terpiłowski et al 2014;Hrynowiecka et al 2019;Górecki et al 2022).…”

“…In the frame of the Adamów sheet of the Detailed Geological Map of Poland at the scale of 1: 50 000, the Kolonia Domaszewska, Kolonia Bystrzycka, Przytulin and Hermanów sites have been subject to expert palaeobotanic analyses of lake deposits, whose age was attributed to the Mazovian Interglacial (MIS 11c) (Krupiński 2004a(Krupiński , b, 2009Żarski and Krupiński 2005;Winter 2006Winter , 2008Żarski et al 2009b). A complete palaeobotanic expertise was prepared for Hermanów and Skrzynka (Hrynowiecka et al 2019;Górecki et al 2022).…”

Palaeoenvironmental changes in the southwestern Mediterranean (ODP site 976, Alboran sea) during the MIS 12/11 transition and the MIS 11 interglacial and implications for hominin populations

“…MIS 11 is traditionally divided into three substages: a, b and c (Hrynowiecka et al, 2019). This subdivision has been adopted by most palynological studies in the Mediterranean (e.g.…”

“…Oliveira et al, 2016;Kousis et al, 2018;Ardenghi et al, 2019). Recent palaeoclimatic studies on MIS 11 in the Northern Hemisphere have introduced two additional substages at the base of MIS 11 (11d and 11e) based on minor changes in isotopic data (Railsback et al, 2015;Hrynowiecka et al, 2019). This distinction seems to be highly dependent on the geographical location of the records, their temporal resolution and the proxies used, and so far only few records have applied a five-substage subdivision-among pollen studies, this partition has been used in the North Atlantic off the coast of Iberia, but not in the Mediterranean.…”