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The Southern Baltic Seas in the Paleogene according to the Study of the Foraminifera

机译：根据有孔虫的研究，古近纪的南波罗的海

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摘要

The changes in the paleocomplexes of the foraminifera, the remains of other organisms, and the lithological composition of the Paleogene deposits in the Kaliningrad region made it possible to reconstruct the sedimentation conditions during the Paleogene. In the Early Paleocene, within the territory of the Southern Baltic region, there was a shallow lightly salted bay of the Northwestern European Sea. In the Middle Paleocene, as a result of the intensive but short-lived transgression, it was transformed into a wide normally salted sea basin up to 200 m deep. At the end of the Middle Paleocene, it gradually became shallow, which caused the sea's disappearance in the Late Paleocene. The new transgression from the west started in the second half of the Middle Eocene, and, after the Mazuro— Belorus Rise and the Poless saddle sank, the South Baltic became a part of the latitudinal communication system that connected the North Atlantic and the Tetis Ocean. The influence of the Tetis Ocean became stronger in the Late Eocene, when the water temperature was the highest in the northern part of the sea bay during the whole Paleogene. In the early Oligocene, the connection of the South Baltic Sea and the Tetis Ocean discontinued, and, in the Late Oligocene, the continental conditions were established in the South Baltic.
机译：有孔虫的古复合体的变化，其他生物的遗留以及加里宁格勒地区古近系沉积物的岩性组成使得重建古近代沉积条件成为可能。在古新世早期，在波罗的海南部地区的领土内，有一个西北欧洲海的浅盐海湾。在中古新世，由于密集但短暂的海侵，它被转变成一个深达200 m深的正常盐渍海盆。在中古新世末期，它逐渐变浅，导致海洋在古新世末期消失。从西方开始的新海侵始于始新世中期，在马祖罗（Mazuro）白俄罗斯（Belorus Rise）和Poless鞍沉没之后，南波罗的海成为连接北大西洋和Tetis海洋的纬度通信系统的一部分。在整个新近纪中，海湾温度最高的地区是在始新世晚期，Tetis海洋的影响变得更强。在渐新世早期，南波罗的海和Tetis海洋的连接中断，在渐新世晚期，南波罗的海建立了大陆条件。

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