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标题：A Baltic Ice Lake lowstand of latest Allerød age in the Arkona Basin, southern Baltic Sea
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作者：Ole Bennike ; Jørn Bo Jensen
期刊名称：Geological Survey of Denmark and Greenland Bulletin
印刷版ISSN：1604-8156
出版年度：2013
卷号：28
页码：17-20
语种：English
出版社：De Nationale Geologiske Undersoegelser for Danmark og Groenland
摘要：After the last deglaciation, the Baltic Sea underwent a complexsalinity history and dynamic shore-level developmentwith several lacustrine and marine stages: the Baltic IceLake, the Yoldia Sea, the Ancylus Lake and the Littorina Sea(Björck 1995). In connection with shallow seismic profilingin the south-western Baltic Sea, two marked and widespreaderosional unconformities have been identified (Jensen et al.1997, 1999; Lemke et al. 1998; Larsen 2004). The older unconformityoccurs within sediments deposited in the BalticIce Lake, whereas the younger one separates Baltic Ice Lakesediments from Holocene lake and mire deposits. The latterunconformity is dated to the transition between the YoungerDryas and the Holocene, corresponding to c. 11.7 cal. kaBP and formed due to a sudden drop in the level of the icedammedBaltic Ice Lake of around 25 m, caused by ice recessionfrom Mt. Billingen in south central Sweden.