干旱区生态环境知识资源中心(Arid): A source of loess-like deposits and their attendant palaeoenvironment - Orava Basin, Western Carpathian Mountains, S Poland

Arid

DOI	10.1016/j.aeolia.2019.04.003
	A source of loess-like deposits and their attendant palaeoenvironment - Orava Basin, Western Carpathian Mountains, S Poland
	Chmielowska, D.1; Woronko, B.2
通讯作者	Chmielowska, D.
来源期刊	AEOLIAN RESEARCH
ISSN	1875-9637
EISSN	2212-1684
出版年	2019
卷号	38 页码:60-76
英文摘要	Loess-like deposits in the Orava Basin are aeolian sediments that were laid down during Pleistocene three cold periods: MIS 2-5d, MIS 6-10, and MIS 12-19. These deposits lie at the upper portion of glaciofluvial fans associated with the Czamy Dunajec River in the Orava Basin and are the youngest lithostratigraphic division that is present there. Results of granulometric analyses place their modal grain size in the coarse silt and fine sand fractions (sediment type 1.a). Geomorphic interactions between local topography, aeolian movements of sand and distribution of dust played the leading role in formation of these deposits. Two series of sediments have been distinguished: Series A which represents proximal depositional provenance, and Series B - distal depositional provenance. The source of the loess-like deposit material must have been local as the Orava Basin is isolated from foreland by highly elevated mountain ranges. Glaciofluvial sediments were deflated then laid down on fans at the bottom of the Orava Basin by rivers draining the western Tatra Mountains. Also 'cannibalized' were top portions of loess-like deposits that had accumulated during earlier Pleistocene cold periods. Fine sediment was also deflated from regolith mantle that formed on the slopes of surrounding hills. This conclusion is based on the results of analyses of microtextures of sand- and silt-sized grains. Grains with surfaces that were primarily shaped by chemical weathering (coated) and by mechanical weathering (fresh fractured) predominate both fractions. These sand grains were transported over a short distance; they were not subject to repeated redeposition.
英文关键词	Loess-like deposits Glaciofluvial fan Local source of deposits Proximal and distal depositional regions Microtextures of sand and silt-size grains Orava Basin
类型	Article
语种	英语
国家	Poland
收录类别	SCI-E
WOS记录号	WOS:000466827600006
WOS关键词	GRAIN-SIZE ; EUROPEAN LOESS ; PALEOSOL SEQUENCES ; TIBETAN PLATEAU ; SOIL FORMATION ; QUARTZ GRAINS ; TRANSPORT ; ACCUMULATION ; DESERT ; DUNES
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/213894
作者单位	1.Pedag Univ Cracow, Inst Geog, Podchorazych 2, PL-084 Krakow, Poland; 2.Warsaw Univ, Fac Geol, Zwirki i Wigury 93, PL-02089 Warsaw, Poland
推荐引用方式 GB/T 7714	Chmielowska, D.,Woronko, B.. A source of loess-like deposits and their attendant palaeoenvironment - Orava Basin, Western Carpathian Mountains, S Poland[J],2019,38:60-76.
APA	Chmielowska, D.,&Woronko, B..(2019).A source of loess-like deposits and their attendant palaeoenvironment - Orava Basin, Western Carpathian Mountains, S Poland.AEOLIAN RESEARCH,38,60-76.
MLA	Chmielowska, D.,et al."A source of loess-like deposits and their attendant palaeoenvironment - Orava Basin, Western Carpathian Mountains, S Poland".AEOLIAN RESEARCH 38(2019):60-76.