Optical dating and sedimentary record from the terrace depositional profile of the Warta River (Central Poland)

AbstractResults of OSL dating and sedimentary studies from the profile of the low alluvial terrace of the middle Warta River are presented. The samples were dated using the single-aliquot regenera-tive method. Dating was used to establish a timing of the Weichselian Late Glacial events in the river valley environment. Stable conditions on the floodplain are expressed by the deposition of organic-rich series radiocarbon dated at 12 900-12 600 cal BP and 11 600-10 770 cal BP. Samples for OSL dating were collected from the mineral material deposited during the intensification of flood events during the Weichselian decline. The results obtained for the alluvia range from 12.78 ± 0.62 ka b2k to 14.33 ± 0.74 ka b2k. Sedimentological criteria allowed to distinguish between particular flood events. Overestimation of OSL ages is probably a result of rapidity of environmental changes in that time.

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Diatoms as a proxy in reconstructing the Holocene environmental changes in the south-western Baltic Sea: the lower Rega River Valley sedimentary record

Palaeolimnological Proxies as Tools of Environmental Reconstruction in Fresh Water ◽

10.1007/978-90-481-3387-1_9 ◽

2009 ◽

pp. 155-172

Author(s):

Andrzej Witkowski ◽

Bernard Cedro ◽

Agnieszka Kierzek ◽

Damian Baranowski

Keyword(s):

Baltic Sea ◽

Environmental Changes ◽

River Valley ◽

The South ◽

Sedimentary Record ◽

The Holocene

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The alternative interpretation of chronology of flood events in the mid-Warta River valley: Record of Early Holocene alluviation in the Koło Basin (central Poland)

Quaternary International ◽

10.1016/j.quaint.2015.03.047 ◽

2015 ◽

Vol 386 ◽

pp. 116-121 ◽

Cited By ~ 3

Author(s):

Piotr Kittel

Keyword(s):

Alternative Interpretation ◽

River Valley ◽

Early Holocene ◽

Flood Events ◽

Central Poland

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Records on Anthropogenic Environmental Changes in Small River Valleys in the Vicinity of Łowicz (Central Poland): Their Significance for the Reconstruction of Late Holocene Settlement Tendencies

Bulletin of Geography Physical Geography Series ◽

10.2478/bgeo-2011-0001 ◽

2011 ◽

Vol 4 (1) ◽

pp. 7-20

Author(s):

Jacek Forysiak ◽

Milena Obremska ◽

Juliusz Twardy

Keyword(s):

Human Activity ◽

Late Holocene ◽

Environmental Changes ◽

River Valley ◽

Small River ◽

Central Poland ◽

Gradual Introduction ◽

Organic Deposits ◽

River Valleys

Abstract Based on palaeobotanical analyses of organic deposits, as well as geomorphological and geological studies at four sites in various geomorphological locations in relation to tributaries of the Bzura River, the presence of traces of human activity, its intensiveness, and classification to cultural levels were analysed. A pattern of later and later settlement in areas remote from the axis of the Warsaw-Berlin streamway was observed along with the gradual introduction of settlement from river valley bottoms to watershed zones.

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Hexactinellid sponge assemblages across the Campanian– Maastrichtian boundary in the Middle Vistula River section, central Poland

Acta Geologica Polonica ◽

10.2478/v10263-012-0030-y ◽

2012 ◽

Vol 62 (4) ◽

pp. 561-580 ◽

Cited By ~ 11

Author(s):

Ewa Świerczewska-Gładysz

Keyword(s):

Sea Level ◽

Environmental Changes ◽

River Valley ◽

River Section ◽

Sea Level Changes ◽

Central Poland ◽

Vistula River ◽

Hexactinellid Sponge ◽

Hexactinellid Sponges ◽

Upper Campanian

ABSTRACTŚwierczewska-Gładysz, E. 2012. Hexactinellid sponge assemblages across the Campanian-Maastrichtian boundary in the Middle Vistula River section, central Poland. Acta Geologica Polonica, 62 (4), 561-580. Warszawa.The sponge fauna from the Upper Campanian-lowermost Maastrichtian succession of the Middle Vistula River valley (central Poland) is represented mainly by dictyid hexactinellid sponges (Hexactinosida and Lychniscosida). Their greatest abundance and taxonomic variability is noted in the “Inoceramus” inkermanensis Zone (Upper Campanian), and they are less diverse in the overlying (Upper Campanian) Trochoceramus costaecus Zone and lower “Inoceramus” redbirdensis Zone. In the upper “Inoceramus” redbirdensis Zone (basal Maastrichtian in the sense of the Tercis rather than the Boreal definition) they are extremely rare. With the beginning of the Maastrichtian the number of dictyid sponges gradually increases.The observed changes in the abundance and taxonomic variability of the dictyid sponges indicate environmental changes in the latest Campanian-earliest Maastrichtian sea in the area. It seems that changes in basin bathymetry, confined to eustatic sea-level changes in the latest Campanian and early Maastrichtian, were the most important factor. Progressive shallowing of the basin in the latest Campanian drastically restricted the development of dictyids. In the peak regression, the sea level could have fallen to only several tens of metres. The gradual recovery of the sponge assemblages correlates with subsequent deepening of the basin with the start of the Maastrichtian

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