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The loess section in Wąchock as the key site of Vistulian loesses and palaeosols in the Holy Cross Mountains (Poland)
Geological Quarterly ( IF 1 ) Pub Date : 2020-04-14 , DOI: 10.7306/gq.1527
Jan DZIERŻEK , Leszek LINDNER , Jerzy NAWROCKI

The Wąchock section (N part of the Holy Cross Mountains) is bipartite, with a sub-loess lower part and a loess upper part. The sub-loess part lying on Lower Triassic sandstones includes fluvial, glacial and ice-dammed lake deposits, TL-dated at 352 ky BP to 157 ±23 ky BP. They represent the Mazovian (MIS 11) (Zbojnian?, MIS 9?) Interglacial and the Odranian Glaciation (MIS 6). The upper part comprises loesses intercalated with palaeosols, which reach a total thickness of 9 m and have TL ages at 148 ±23 ky BP to 15.8 ±8 ky BP. This part of the succession begins with horizon B of a brown soil from the Eemian Interglacial (MIS 5e) with an interstadial black soil from the oldest Vistulian (MIS 5c). Four younger loess horizons from the middle and younger Vistulian occur above; loesses with arctic and tundra palaeosols correspond to younger isotope stages (MIS 5b–MIS 2). The loess and palaeosol horizons distinguished in Wąchock were correlated with loess sections in Poland (Zwierzyniec and Polanow Samborzecki) and western Ukraine (Kolodiiv 3), showing large similarities of both loesses and palaeosols. Due to this, the Wąchock site is proposed as a one of key sections for Vistulian loess sequences not only in the Holy Cross Mts. region but also in Central Europe. Palaeomagnetic studies of the Wąchock loesses have registered palaeomagnetic inclinations with values lower than the average values expected in this locality (63°).

中文翻译:

Wąchock 的黄土部分是圣十字山脉维斯图利亚黄土和古土壤的主要产地(波兰)

Wąchock 部分(圣十字山脉的 N 部分)是两部分,下部为亚黄土,上部为黄土。位于下三叠统砂岩上的亚黄土部分包括河流、冰川和冰坝湖沉积物,TL-date 为 352 ky BP 至 157 ±23 ky BP。它们代表 Mazovian (MIS 11) (Zbojnian?, MIS 9?) 间冰期和 Odranian Glaciation (MIS 6)。上部为夹有古土壤的黄土,总厚度达 9 m,TL 年龄为 148 ±23 ky BP 至 15.8 ±8 ky BP。这部分演替始于 Eemian 间冰期 (MIS 5e) 的棕色土壤的层位 B,以及来自最古老维斯图利亚 (MIS 5c) 的间层黑土。上面有四个来自中间和年轻维斯图利亚的年轻黄土层;具有北极和苔原古土壤的黄土对应于较年轻的同位素阶段 (MIS 5b–MIS 2)。在 Wąchock 区分的黄土和古土壤层与波兰 (Zwierzyniec 和 Polanow Samborzecki) 和乌克兰西部 (Kolodiiv 3) 的黄土剖面相关联,显示出黄土和古土壤有很大的相似性。因此,Wąchock 站点被提议作为维斯图利亚黄土序列的关键部分之一,不仅在圣十字山。地区,但也在中欧。对 Wąchock 黄土的古地磁研究记录了古地磁倾角,其值低于该地区预期的平均值 (63°)。显示出黄土和古土壤有很大的相似性。因此,Wąchock 站点被提议作为维斯图利亚黄土序列的关键部分之一,不仅在圣十字山。地区,但也在中欧。对 Wąchock 黄土的古地磁研究记录了古地磁倾角,其值低于该地区预期的平均值 (63°)。显示出黄土和古土壤有很大的相似性。因此,Wąchock 站点被提议作为维斯图利亚黄土序列的关键部分之一,不仅在圣十字山。地区,但也在中欧。对 Wąchock 黄土的古地磁研究记录了古地磁倾角,其值低于该地区预期的平均值 (63°)。
更新日期:2020-04-14
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