干旱区生态环境知识资源中心(Arid): Flood and sandstorm events recorded in holocene sebkha deposits in Southeastern Tunisia: Evidence from magnetic and geochemical properties

Arid

DOI	10.1016/j.quaint.2020.09.006
	Flood and sandstorm events recorded in holocene sebkha deposits in Southeastern Tunisia: Evidence from magnetic and geochemical properties
	Ameur, Mariem Ben; Masmoudi, Sameh; Yaich, Chokri
通讯作者	Ameur, MB (corresponding author), Univ Sfax, Natl Engn Sch Sfax, Rd Soukra, Sfax 3038, Tunisia.
来源期刊	QUATERNARY INTERNATIONAL
ISSN	1040-6182
EISSN	1873-4553
出版年	2021
卷号	571 页码:46-57
英文摘要	In our research work, the central focus is upon the multi-proxy analysis of sediment core recovered in sebkha Mhabeul (southeastern Tunisia), provides the first high-resolution, continuous sedimentary record in the region, extending back to mid Holocene. The integration of sedimentary facies, elemental geochemistry and magnetic susceptibility, together with an age model based on tephrochronology, enable reconstruction of the main hydrological and climate changes in the region. Arid conditions, represented by thick gypsum interval at the bottom of Mh2 core occurred during Bronze Age. However, the period extending from Iron Age to the Present time is characterized by alternating episodes of higher effective moisture and severely arid climatic conditions. Magnetic and geochemical compositions provide information concerning changes of elemental and mineralogical compositions from flood events materials interrupted by thin deposits of aeolian origin. Indeed, six binary data consist of dominant silty fractions rich in heavy minerals and increasing with wadi-derived elements like Na2O/K2O and Na2O/Fe2O3. These wadi sediments are covered with sandy/silty Saharan aeolian input occurring commonly after rapid and short climate change towards drier conditions. These sandstorm events are known for increasing redox-sensitive elements Na2O/K2O.
英文关键词	Holocene Sebkha Abrupt climatic change Geochemical Flood events Sandstorm events
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000612111700001
WOS关键词	NORTH-ATLANTIC OSCILLATION ; MAJOR-ELEMENT CHEMISTRY ; CLIMATE VARIABILITY ; MEDITERRANEAN SEDIMENTS ; ENVIRONMENTAL-CHANGES ; SOUTHERN TUNISIA ; LATE PLEISTOCENE ; PLAYA SEDIMENTS ; LATE QUATERNARY ; THAR DESERT
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348112
作者单位	[Ameur, Mariem Ben; Yaich, Chokri] Univ Sfax, Natl Engn Sch Sfax, Rd Soukra, Sfax 3038, Tunisia; [Ameur, Mariem Ben; Masmoudi, Sameh; Yaich, Chokri] Univ Sfax, Lab GEOGLOB, LR13ES23,BP 802, Sfax 3028, Tunisia; [Masmoudi, Sameh] Univ Sfax, Fac Sci Sfax, Rd Soukra, Sfax 3028, Tunisia
推荐引用方式 GB/T 7714	Ameur, Mariem Ben,Masmoudi, Sameh,Yaich, Chokri. Flood and sandstorm events recorded in holocene sebkha deposits in Southeastern Tunisia: Evidence from magnetic and geochemical properties[J],2021,571:46-57.
APA	Ameur, Mariem Ben,Masmoudi, Sameh,&Yaich, Chokri.(2021).Flood and sandstorm events recorded in holocene sebkha deposits in Southeastern Tunisia: Evidence from magnetic and geochemical properties.QUATERNARY INTERNATIONAL,571,46-57.
MLA	Ameur, Mariem Ben,et al."Flood and sandstorm events recorded in holocene sebkha deposits in Southeastern Tunisia: Evidence from magnetic and geochemical properties".QUATERNARY INTERNATIONAL 571(2021):46-57.