scholarly journals Mobility Memories and Space: Mesolithic Living Close to the Ancylus Lake in Eastern Middle Sweden, 8000 - 6000 cal BC

2017 ◽  
Vol 5 (4) ◽  
pp. 332-342 ◽  
Author(s):  
Tom Carlsson
Keyword(s):  
Ancylus Lake

scholarly journals Early Holocene history of the southwestern Baltic Sea: the Ancylus Lake stage

Boreas ◽  
2008 ◽  
Vol 28 (4) ◽  
pp. 437-453 ◽  
Author(s):  
JφRN BO JENSEN ◽  
OLE BENNIKE ◽  
ANDRZEJ WITKOWSKI ◽  
WOLFRAM LEMKE ◽  
ANTOON KUIJPERS
Keyword(s):  
Baltic Sea ◽  
Early Holocene ◽  
History Of ◽  
Lake Stage ◽  
Ancylus Lake

scholarly journals Holocene relative shore-level changes and Stone Age palaeogeography of the Pärnu Bay area, eastern Baltic Sea

The Holocene ◽  
2019 ◽  
Vol 30 (1) ◽  
pp. 37-52 ◽  
Author(s):  
Triine Nirgi ◽  
Alar Rosentau ◽  
Hando-Laur Habicht ◽  
Tiit Hang ◽  
Tõnno Jonuks ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Water Level ◽  
Sea Level ◽  
Average Rate ◽  
Stone Age ◽  
Shore Level ◽  
Bay Area ◽  
Shore Displacement ◽  
Ancylus Lake ◽  
Eastern Baltic

The shore displacement and palaeogeography of the Pärnu Bay area, eastern Baltic Sea, during the Stone Age, were reconstructed using sedimentological and archaeological proxies and GIS-based landscape modelling. We discovered and studied buried palaeochannel sediments on the coastal lowland and in the shallow offshore of the Pärnu Bay and interpreted these data together with previously published shore displacement evidence. The reconstructed relative shore-level (RSL) curve is based on 78 radiocarbon dates from sediment sequences and archaeological sites in the Pärnu Bay area and reported here using the HOLSEA sea-level database format. The new RSL curve displays regressive water levels at −5.5 and −4 m a.s.l. before the Ancylus Lake and Litorina Sea transgressions, respectively. According to the curve, the total water-level rise during the Ancylus Lake transgression (10.7–10.2 cal. ka BP) was around 18 m, with the average rate of rise about 35 mm per annum, while during the Litorina Sea transgression (8.5–7.3 cal. ka BP), the water level rose around 14 m, with average rate of 12 mm per annum. During the short period around 7.8–7.6 cal. ka BP, the RSL rose in Pärnu, but probably also in Samsø (Denmark), Blekinge (Sweden) and Narva-Luga (NE Estonia–NW Russia), faster than the concurrent eustatic sea level calculated from the far-field sites. The palaeogeographic reconstructions show the settlement patterns of the coastal landscape since the Mesolithic and provide new perspective for looking Mesolithic hunter-fisher-gatherer settlement sites on the banks of the submerged ca. 9000 years old river channel in the bottom of the present-day Pärnu Bay.

Stages of the Baltic Sea evolution in the geochemical record and radiocarbon dating of sediment cores from the Arkona Basin

2014 ◽  
Vol 43 (3) ◽  
Author(s):  
Robert Kostecki
Keyword(s):  
Baltic Sea ◽  
Environmental Changes ◽  
Sediment Cores ◽  
Late Glacial ◽  
Sudden Increase ◽  
The Baltic Sea ◽  
Geochemical Composition ◽  
Arkona Basin ◽  
The Baltic ◽  
Ancylus Lake

AbstractFour sediment cores from the southern part of the Arkona Basin were analyzed in terms of their geochemical composition, age and stratigraphy. The main stages of the Baltic Sea: the Baltic Ice Lake, the Ancylus Lake and the Littorina Sea were identified in all the analyzed cores. The data confirmed the high water fluctuation and significant environmental changes during the Baltic Sea evolution in the Late-Glacial and the Holocene. The signs of the second regression of the Baltic Ice Lake, dated at around 11 000 cal BP, were identified at a depth of 24 m b.s.l. Regression of the Ancylus Lake, dated at 9300 cal BP, was identified at a depth of 23 m b.s.l. The most pronounced period was the transition stage between the Ancylus Lake and the Littorina Sea. The record of the Littorina Sea onset in the sediments of the Arkona Basin is marked as a sudden increase in loss on ignition, biogenic silica, magnesium, calcium, iron and strontium. The age of the Littorina Sea in the Arkona Basin was estimated as younger than 8200 cal BP.

scholarly journals Holocene Spatiotemporal Redox Variations in the Southern Baltic Sea

2021 ◽  
Vol 9 ◽  
Author(s):  
Dalton S. Hardisty ◽  
Natascha Riedinger ◽  
Noah J. Planavsky ◽  
Dan Asael ◽  
Steven M. Bates ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Solid Phase ◽  
Bornholm Basin ◽  
The Holocene ◽  
Isotope Data ◽  
Fe Speciation ◽  
Baltic Proper ◽  
Southern Baltic ◽  
The Baltic ◽  
Ancylus Lake

Low oxygen conditions in the modern Baltic Sea are exacerbated by human activities; however, anoxic conditions also prevailed naturally over the Holocene. Few studies have characterized the specific paleoredox conditions (manganous, ferruginous, euxinic) and their frequency in southern Baltic sub-basins during these ancient events. Here, we apply a suite of isotope systems (Fe, Mo, S) and associated elemental proxies (e.g., Fe speciation, Mn) to specifically define water column redox regimes through the Baltic Holocene in a sill-proximal to sill-distal transect (Lille Belt, Bornholm Basin, Landsort Deep) using samples collected during the Integrated Ocean Drilling Program Expedition 347. At the sill-proximal Lille Belt, there is evidence for anoxic manganous/ferruginous conditions for most of the cored interval following the transition from the Ancylus Lake to Littorina Sea but with no clear excursion to more reducing or euxinic conditions associated with the Holocene Thermal Maximum (HTM) or Medieval Climate Anomaly (MCA) events. At the sill-distal southern sub-basin, Bornholm Basin, a combination of Fe speciation, pore water Fe, and solid phase Mo concentration and isotope data point to manganous/ferruginous conditions during the Ancylus Lake-to-Littorina Sea transition and HTM but with only brief excursions to intermittently or weakly euxinic conditions during this interval. At the western Baltic Proper sub-basin, Landsort Deep, new Fe and S isotope data bolster previous Mo isotope records and Fe speciation evidence for two distinct anoxic periods but also suggest that sulfide accumulation beyond transient levels was largely restricted to the sediment-water interface. Ultimately, the combined data from all three locations indicate that Fe enrichments typically indicative of euxinia may be best explained by Fe deposition as oxides following events likely analogous to the periodic incursions of oxygenated North Sea waters observed today, with subsequent pyrite formation in sulfidic pore waters. Additionally, the Mo isotope data from multiple Baltic Sea southern basins argue against restricted and widespread euxinic conditions, as has been demonstrated in the Baltic Proper and Bothnian Sea during the HTM or MCA. Instead, similar to today, each past Baltic anoxic event is characterized by redox conditions that become progressively more reducing with increasing distance from the sill.

Early Holocene history of the southwestern Baltic Sea: the Ancylus Lake stage

Boreas ◽  
1999 ◽  
Vol 28 (4) ◽  
pp. 437-453 ◽  
Author(s):  
Jørn Bo Jensen ◽  
Ole Bennike ◽  
Andrzej Witkowski ◽  
Wolfram Lemke ◽  
Antoon Kuijpers
Keyword(s):  
Baltic Sea ◽  
Early Holocene ◽  
History Of ◽  
Lake Stage ◽  
Ancylus Lake
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