波兰东部Neple的Saalian冰盖边缘的范围和动态

IF 1.3 4区地球科学 Q2 GEOLOGY

Bulletin of the Geological Society of Finland Pub Date : 2018-12-01 DOI:10.17741/bgsf/90.2.004

J. Nitychoruk, Łukasz Zbucki, J. Rychek, B. Woronko, L. Marks

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引用次数: 3

摘要

Neple遗址位于波兰-白俄罗斯边境地区南部的Bug和Krzna河山谷之间的边缘冰碛上。冰川裂口上覆盖着冰川河沙和砾石。经岩石学鉴定，该冰粒属于三叠二冰期(Elsterian)和奥德良冰期(Saalian)的Warta Stadial冰原。在瓦尔塔冰原的前进过程中，沉积物发生了冰川构造变形。一个局部应力场来自西北和北部，但它部分地遇到了位于今天的库尔兹那河河口的冰川瓣的阻力。类似的冰川构造变形在现在的布格河谷西南坡也很常见，划定了该地区瓦尔塔斯塔(萨里安)冰盖的最大范围。

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Extent and dynamics of the Saalian ice-sheet margin in Neple, eastern Poland

The Neple site is located on a marginal moraine between the valleys of Bug and Krzna rivers in the southern part of the Polish–Belarusian border area. A glacial diamicton is overlain there by glaciofluvial sand and gravel. The glacial diamicton is laminated and, based on petrographic examination, it was ascribed both to the Sanian 2 Glaciation (Elsterian) and the Warta Stadial ice-sheet of the Odranian Glaciation (Saalian). The sediments were glaciotectonically deformed during readvance of the Warta Stadial icesheet. A local stress field was from the northwest and north but it partly encountered resistance from the glacial lobe located in the present-day river-mouth of the Krzna River. Similar glaciotectonic deformations are common also along the southwestern slope of the present Bug River valley, demarcating the maximum extent of the Warta Stadial (Saalian) ice-sheet in this area.

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来源期刊

Bulletin of the Geological Society of Finland GEOLOGY-

CiteScore

1.30

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Bulletin of the Geological Society of Finland (BGSF) publishes research articles and short communications in all branches of geosciences. Contributions from outside Finland are welcome, provided that they contain material relevant to Finnish geology or are of general interest.