Korrelation von mittelpleistozänen Löss-/Paläobodensequenzen in Oberösterreich mit einer marinen Sauerstoffisotopenkurve

Abstract. Three profiles of Middle Pleistocene covering layers on top of fluvioglacial terraces of the Traun-Ems-Plate are recorded in the region of Wels representing characteristic Middle Pleistocene sequences for the Northern Alpine Foreland. The sequences comprise thick pedocomplexes, providing the opportunity to distinguish and to classify specific interglacial paleosols. The loess/paleosol sequence of Oberlaab developed on the top of the fluvioglacial terrace of the Mindel (Jüngere Deckenschotter) shows four interglacial paleosols. This fact suggests that the age of the terrace is at least the fifth to last glacial period, correlativ to OIS 12. The covering layers on top of the classical Günz terrace (Ältere Deckenschotter) in Neuhofen and Wels-Aschet include five paleosols. The intensity of pedogenesis of the basal pedocomplex is considerably more pronounced as in the overlying paleosols. Pedostratigraphical results point out that the genesis of the Günz terrace can be correlated to OIS 16 (minimum age).

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Insights into continental temperatures in the northwestern Black Sea area during the Last Glacial period using branched tetraether lipids

Quaternary Science Reviews ◽

10.1016/j.quascirev.2013.11.013 ◽

2014 ◽

Vol 84 ◽

pp. 98-108 ◽

Cited By ~ 18

Author(s):

Lise Sanchi ◽

Guillemette Ménot ◽

Edouard Bard

Keyword(s):

Black Sea ◽

Glacial Period ◽

Last Glacial Period ◽

Last Glacial ◽

Tetraether Lipids ◽

Sea Area ◽

The Last Glacial

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Post-depositional manganese mobilization during the last glacial period in sediments of the eastern Clarion-Clipperton Zone, Pacific Ocean

Earth and Planetary Science Letters ◽

10.1016/j.epsl.2019.116012 ◽

2020 ◽

Vol 532 ◽

pp. 116012 ◽

Cited By ~ 2

Author(s):

Jessica B. Volz ◽

Bo Liu ◽

Male Köster ◽

Susann Henkel ◽

Andrea Koschinsky ◽

...

Keyword(s):

Pacific Ocean ◽

Glacial Period ◽

Last Glacial Period ◽

Last Glacial ◽

The Last Glacial

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Modes of eastern equatorial Pacific thermocline variability: Implications for ENSO dynamics over the last glacial period

Paleoceanography ◽

10.1029/2008pa001701 ◽

2009 ◽

Vol 24 (3) ◽

Cited By ~ 59

Author(s):

Guillaume Leduc ◽

Laurence Vidal ◽

Olivier Cartapanis ◽

Edouard Bard

Keyword(s):

Equatorial Pacific ◽

Glacial Period ◽

Last Glacial Period ◽

Last Glacial ◽

Eastern Equatorial Pacific ◽

Enso Dynamics ◽

The Last Glacial ◽

Thermocline Variability

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<i>δ</i><sup>13</sup>C decreases in the upper western South Atlantic during Heinrich Stadials 3 and 2

Climate of the Past ◽

10.5194/cp-13-345-2017 ◽

2017 ◽

Vol 13 (4) ◽

pp. 345-358 ◽

Cited By ~ 4

Author(s):

Marília C. Campos ◽

Cristiano M. Chiessi ◽

Ines Voigt ◽

Alberto R. Piola ◽

Henning Kuhnert ◽

...

Keyword(s):

Climate Change ◽

South Atlantic ◽

Meridional Overturning Circulation ◽

Glacial Period ◽

Last Deglaciation ◽

Last Glacial Period ◽

Last Glacial ◽

Change Events ◽

The Last Glacial ◽

Millennial Scale

Abstract. Abrupt millennial-scale climate change events of the last deglaciation (i.e. Heinrich Stadial 1 and the Younger Dryas) were accompanied by marked increases in atmospheric CO2 (CO2atm) and decreases in its stable carbon isotopic ratios (δ13C), i.e. δ13CO2atm, presumably due to outgassing from the ocean. However, information on the preceding Heinrich Stadials during the last glacial period is scarce. Here we present δ13C records from two species of planktonic foraminifera from the western South Atlantic that reveal major decreases (up to 1 ‰) during Heinrich Stadials 3 and 2. These δ13C decreases are most likely related to millennial-scale periods of weakening of the Atlantic meridional overturning circulation and the consequent increase (decrease) in CO2atm (δ13CO2atm). We hypothesise two mechanisms that could account for the decreases observed in our records, namely strengthening of Southern Ocean deep-water ventilation and weakening of the biological pump. Additionally, we suggest that air–sea gas exchange could have contributed to the observed δ13C decreases. Together with other lines of evidence, our data are consistent with the hypothesis that the CO2 added to the atmosphere during abrupt millennial-scale climate change events of the last glacial period also originated in the ocean and reached the atmosphere by outgassing. The temporal evolution of δ13C during Heinrich Stadials 3 and 2 in our records is characterized by two relative minima separated by a relative maximum. This w structure is also found in North Atlantic and South American records, further suggesting that such a structure is a pervasive feature of Heinrich Stadial 2 and, possibly, also Heinrich Stadial 3.

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