New age constraints from the SW Baltic Sea area – implications for Scandinavian Ice Sheet dynamics and palaeo‐environmental conditions during MIS 3 and early MIS 2
New age constraints from the SW Baltic Sea area – implications for Scandinavian Ice Sheet dynamics and palaeo‐environmental conditions during MIS 3 and early MIS 2
复制标题
波罗的海西南部地区的新年龄限制——对 MIS 3 和早期 MIS 2 期间斯堪的纳维亚冰盖动态和古环境条件的影响
作者:
Kenzler;Tsukamoto;Frechen;Hüneke
The study of two cliff outcrops from the Jasmund Peninsula provides new information on the ice‐sheet dynamics and palaeo‐environmental conditions during MIS 3 and the ensuing transition to MIS 2 in the southwestern Baltic Sea region. We identified interstadial fluvial sediments, with mollusc and vertebrate fauna, which were deposited between 47 and 42 ka in a steppe‐like landscape. A subsequent cooling phase led to the formation of a proglacial lake, between 30 and 22 ka, indicated by varve‐like, rhythmically bedded silty clay. This proglacial lake formation can be correlated to the blocking of the Baltic Basin by the Kattegat ice advance, previously dated toc. 29–26 ka. The transition from proglacial to terminoglacial lacustrine deposits reflects the immediate advance of the Scandinavian Ice Sheet (SIS) into the study area after the transition from MIS 3 to early MIS 2. The SIS finally reached the area at 23±2 ka (Brandenburgian phase; advance from the northeast). A subsequent ice retreat accompanied by the deposition of meltwater sediments was followed by a re‐advance of the SIS, resulting in a glaciotectonic deformation event across the study area. The age control for our study is based on optically stimulated luminescence (OSL). The investigated Pleistocene sediments show ice‐free conditions during MIS 3 and early MIS 2, indicating that neither the Ristinge nor the Klintholm advance reached the SW Baltic Sea coast of Jasmund.
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影响因子:
4
作者:
L. Marks
通讯作者:
L. Marks
影响因子:
4
作者:
J. Anjar;L. Adrielsson;O. Bennike;S. Björck;H. Filipsson;J. Groeneveld;K. Knudsen;N. K. Larsen;P. Möller
通讯作者:
P. Möller
影响因子:
2.2
作者:
K. Heine;A. Reuther;Hans Ulrich Thieke;R. Schulz;N. Schlaak;P. Kubik
通讯作者:
P. Kubik
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
M. Houmark‐Nielsen;O. Bennike;G. Lemdahl;C. Lüthgens
通讯作者:
C. Lüthgens
影响因子:
2.2
作者:
B. Wohlfarth
通讯作者:
B. Wohlfarth